./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor886175859 <...> shed ...> [pid 4996] close(3 [pid 6333] <... symlink resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 6333] memfd_create("syzkaller", 0 [pid 4996] rmdir("./110" [pid 6333] <... memfd_create resumed>) = 3 [pid 6333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] mkdir("./111", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6334 [pid 6329] <... write resumed>) = 2097152 ./strace-static-x86_64: Process 6334 attached [pid 6334] chdir("./111") = 0 [pid 6334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6331] <... write resumed>) = 2097152 [pid 6330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6334] setpgid(0, 0) = 0 [pid 6334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6334] write(3, "1000", 4) = 4 [pid 6334] close(3) = 0 [pid 6334] symlink("/dev/binderfs", "./binderfs" [pid 6331] munmap(0x7f46b9f9b000, 2097152 [pid 6334] <... symlink resumed>) = 0 [pid 6334] memfd_create("syzkaller", 0 [pid 6333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6331] <... munmap resumed>) = 0 [pid 6329] munmap(0x7f46b9f9b000, 2097152 [pid 6334] <... memfd_create resumed>) = 3 [pid 6334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6331] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6329] <... munmap resumed>) = 0 [pid 6334] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6331] <... openat resumed>) = 4 [pid 6331] ioctl(4, LOOP_SET_FD, 3 [pid 6329] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6329] ioctl(4, LOOP_SET_FD, 3 [pid 6331] <... ioctl resumed>) = 0 [pid 6331] close(3 [pid 6329] <... ioctl resumed>) = 0 [pid 6331] <... close resumed>) = 0 [pid 6329] close(3 [pid 6331] mkdir("./file0", 0777 [pid 6329] <... close resumed>) = 0 [pid 6331] <... mkdir resumed>) = 0 [pid 6329] mkdir("./file0", 0777 [pid 6331] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6329] <... mkdir resumed>) = 0 [pid 6329] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6332] <... write resumed>) = 2097152 [pid 6334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6332] munmap(0x7f46b9f9b000, 2097152 [pid 6330] <... write resumed>) = 2097152 [ 136.378976][ T6331] loop2: detected capacity change from 0 to 4096 [ 136.386710][ T6329] loop4: detected capacity change from 0 to 4096 [pid 6332] <... munmap resumed>) = 0 [pid 6330] munmap(0x7f46b9f9b000, 2097152 [pid 6332] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6332] ioctl(4, LOOP_SET_FD, 3 [pid 6330] <... munmap resumed>) = 0 [pid 6334] <... write resumed>) = 2097152 [pid 6333] <... write resumed>) = 2097152 [pid 6332] <... ioctl resumed>) = 0 [pid 6330] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6334] munmap(0x7f46b9f9b000, 2097152 [pid 6332] close(3 [pid 6330] <... openat resumed>) = 4 [pid 6334] <... munmap resumed>) = 0 [pid 6333] munmap(0x7f46b9f9b000, 2097152 [pid 6332] <... close resumed>) = 0 [pid 6330] ioctl(4, LOOP_SET_FD, 3 [pid 6334] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6333] <... munmap resumed>) = 0 [pid 6332] mkdir("./file0", 0777 [pid 6334] <... openat resumed>) = 4 [pid 6333] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6332] <... mkdir resumed>) = 0 [pid 6334] ioctl(4, LOOP_SET_FD, 3 [pid 6333] <... openat resumed>) = 4 [pid 6332] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6334] <... ioctl resumed>) = 0 [ 136.446869][ T6332] loop1: detected capacity change from 0 to 4096 [ 136.454230][ T6329] NILFS (loop4): invalid segment: Checksum error in segment payload [ 136.462444][ T6331] NILFS (loop2): invalid segment: Checksum error in segment payload [ 136.470533][ T6329] NILFS (loop4): trying rollback from an earlier position [ 136.477209][ T6330] loop5: detected capacity change from 0 to 4096 [ 136.481581][ T6329] NILFS (loop4): recovery complete [ 136.489322][ T6334] loop3: detected capacity change from 0 to 4096 [pid 6333] ioctl(4, LOOP_SET_FD, 3 [pid 6330] <... ioctl resumed>) = 0 [pid 6334] close(3 [pid 6333] <... ioctl resumed>) = 0 [pid 6330] close(3 [pid 6334] <... close resumed>) = 0 [pid 6333] close(3 [pid 6330] <... close resumed>) = 0 [pid 6334] mkdir("./file0", 0777 [pid 6333] <... close resumed>) = 0 [pid 6330] mkdir("./file0", 0777 [pid 6334] <... mkdir resumed>) = 0 [pid 6333] mkdir("./file0", 0777 [pid 6330] <... mkdir resumed>) = 0 [pid 6334] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6333] <... mkdir resumed>) = 0 [pid 6330] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6333] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6329] <... mount resumed>) = 0 [ 136.491983][ T6333] loop0: detected capacity change from 0 to 4096 [ 136.496985][ T6331] NILFS (loop2): trying rollback from an earlier position [ 136.518459][ T6335] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.520828][ T6334] NILFS (loop3): invalid segment: Checksum error in segment payload [ 136.530937][ T6331] NILFS (loop2): recovery complete [pid 6329] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6331] <... mount resumed>) = 0 [ 136.543323][ T6334] NILFS (loop3): trying rollback from an earlier position [ 136.554209][ T6332] NILFS (loop1): invalid segment: Checksum error in segment payload [ 136.562310][ T6332] NILFS (loop1): trying rollback from an earlier position [ 136.570225][ T6334] NILFS (loop3): recovery complete [ 136.571705][ T6333] NILFS (loop0): invalid segment: Checksum error in segment payload [ 136.576980][ T6336] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6329] chdir("./file0" [pid 6331] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6329] <... chdir resumed>) = 0 [pid 6334] <... mount resumed>) = 0 [pid 6331] <... openat resumed>) = 3 [pid 6329] ioctl(4, LOOP_CLR_FD [pid 6334] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6331] chdir("./file0" [pid 6329] <... ioctl resumed>) = 0 [pid 6334] <... openat resumed>) = 3 [pid 6331] <... chdir resumed>) = 0 [pid 6329] close(4 [pid 6334] chdir("./file0" [pid 6331] ioctl(4, LOOP_CLR_FD [pid 6329] <... close resumed>) = 0 [pid 6334] <... chdir resumed>) = 0 [pid 6334] ioctl(4, LOOP_CLR_FD [pid 6331] <... ioctl resumed>) = 0 [pid 6329] creat("./bus", 000 [pid 6334] <... ioctl resumed>) = 0 [pid 6331] close(4 [pid 6334] close(4 [pid 6331] <... close resumed>) = 0 [pid 6334] <... close resumed>) = 0 [pid 6331] creat("./bus", 000 [pid 6334] creat("./bus", 000) = 4 [pid 6331] <... creat resumed>) = 4 [pid 6329] <... creat resumed>) = 4 [pid 6334] unlink("./bus" [pid 6331] unlink("./bus" [pid 6329] unlink("./bus" [pid 6331] <... unlink resumed>) = 0 [pid 6334] <... unlink resumed>) = 0 [pid 6331] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6329] <... unlink resumed>) = 0 [ 136.586905][ T6330] NILFS (loop5): invalid segment: Checksum error in segment payload [ 136.595097][ T6337] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.604815][ T6333] NILFS (loop0): trying rollback from an earlier position [ 136.623402][ T6330] NILFS (loop5): trying rollback from an earlier position [ 136.633406][ T6332] NILFS (loop1): recovery complete [pid 6334] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6329] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6332] <... mount resumed>) = 0 [pid 6332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6334] <... pwritev2 resumed>) = 65007 [pid 6332] <... openat resumed>) = 3 [pid 6332] chdir("./file0") = 0 [pid 6332] ioctl(4, LOOP_CLR_FD) = 0 [pid 6334] exit_group(0 [pid 6332] close(4 [pid 6334] <... exit_group resumed>) = ? [pid 6332] <... close resumed>) = 0 [pid 6331] <... pwritev2 resumed>) = 65007 [pid 6329] <... pwritev2 resumed>) = 65007 [pid 6332] creat("./bus", 000 [pid 6331] exit_group(0 [pid 6329] exit_group(0 [pid 6331] <... exit_group resumed>) = ? [pid 6329] <... exit_group resumed>) = ? [ 136.654579][ T6338] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6332] <... creat resumed>) = 4 [pid 6332] unlink("./bus") = 0 [pid 6332] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6334] +++ exited with 0 +++ [pid 6331] +++ exited with 0 +++ [pid 6329] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6329, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6334, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6331, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [ 136.704590][ T6333] NILFS (loop0): recovery complete [ 136.722438][ T6330] NILFS (loop5): recovery complete [pid 6333] <... mount resumed>) = 0 [pid 6330] <... mount resumed>) = 0 [pid 4997] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4997] fstat(3, [pid 4996] fstat(3, [pid 4995] fstat(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6332] <... pwritev2 resumed>) = 65007 [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 4995] getdents64(3, [pid 6333] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6332] exit_group(0 [pid 6330] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6333] <... openat resumed>) = 3 [pid 6332] <... exit_group resumed>) = ? [pid 6330] <... openat resumed>) = 3 [pid 4997] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6333] chdir("./file0" [pid 6330] chdir("./file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6333] <... chdir resumed>) = 0 [pid 6330] <... chdir resumed>) = 0 [pid 4997] lstat("./110/binderfs", [pid 4996] lstat("./111/binderfs", [pid 4995] lstat("./108/binderfs", [pid 6333] ioctl(4, LOOP_CLR_FD [pid 6330] ioctl(4, LOOP_CLR_FD [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6333] <... ioctl resumed>) = 0 [pid 6330] <... ioctl resumed>) = 0 [pid 4997] unlink("./110/binderfs" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6333] close(4 [pid 6330] close(4 [pid 4997] <... unlink resumed>) = 0 [pid 4996] unlink("./111/binderfs" [pid 4995] unlink("./108/binderfs" [pid 6333] <... close resumed>) = 0 [pid 6330] <... close resumed>) = 0 [pid 4997] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6333] creat("./bus", 000 [pid 6330] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6333] <... creat resumed>) = 4 [pid 6330] <... creat resumed>) = 4 [pid 6330] unlink("./bus" [pid 6333] unlink("./bus" [pid 6332] +++ exited with 0 +++ [pid 6330] <... unlink resumed>) = 0 [ 136.757044][ T6340] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 136.763006][ T6339] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6330] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6332, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] lstat("./110/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6333] <... unlink resumed>) = 0 [pid 4997] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6333] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6330] <... pwritev2 resumed>) = 65007 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6330] exit_group(0 [pid 4997] <... openat resumed>) = 4 [pid 4994] <... openat resumed>) = 3 [pid 4997] fstat(4, [pid 4994] fstat(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4994] getdents64(3, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(4, [pid 4994] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(4 [pid 4994] lstat("./110/binderfs", [pid 4997] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] rmdir("./110/file0" [pid 4994] unlink("./110/binderfs" [pid 6330] <... exit_group resumed>) = ? [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./110") = 0 [pid 4997] mkdir("./111", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6341 ./strace-static-x86_64: Process 6341 attached [pid 6341] chdir("./111") = 0 [pid 6341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6341] setpgid(0, 0) = 0 [pid 6341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = 0 [pid 6333] <... pwritev2 resumed>) = 65007 [pid 6330] +++ exited with 0 +++ [pid 4995] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6341] <... openat resumed>) = 3 [pid 6333] exit_group(0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6330, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6341] write(3, "1000", 4 [pid 6333] <... exit_group resumed>) = ? [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./108/file0", [pid 6341] <... write resumed>) = 4 [pid 4996] lstat("./111/file0", [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6341] close(3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6341] <... close resumed>) = 0 [pid 6333] +++ exited with 0 +++ [pid 4996] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6341] symlink("/dev/binderfs", "./binderfs" [pid 4998] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./108/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6341] <... symlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 4 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6333, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 6341] memfd_create("syzkaller", 0 [pid 4998] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 4 [pid 4995] fstat(4, [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... openat resumed>) = 3 [pid 4993] <... restart_syscall resumed>) = 0 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4993] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6341] <... memfd_create resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] fstat(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6341] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4993] <... openat resumed>) = 3 [pid 4998] lstat("./110/binderfs", [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] fstat(3, [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] unlink("./110/binderfs" [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 4998] <... unlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(4 [pid 4995] <... close resumed>) = 0 [pid 4993] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4995] rmdir("./108/file0" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./111/file0" [pid 4993] lstat("./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] unlink("./110/binderfs" [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] getdents64(3, [pid 4998] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] close(3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] close(3 [pid 4998] lstat("./110/file0", [pid 4996] rmdir("./111" [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4995] rmdir("./108" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] mkdir("./112", 0777 [pid 4994] lstat("./110/file0", [pid 4998] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] mkdir("./109", 0777 [pid 4994] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4996] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] getdents64(4, [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] close(3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] getdents64(4, [pid 4994] fstat(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] close(3 [pid 4994] getdents64(4, [pid 4998] rmdir("./110/file0" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 4995] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6342 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] close(4 [pid 4998] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./110/file0" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6343 [pid 4994] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./110" [pid 4994] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] mkdir("./111", 0777 [pid 4994] rmdir("./110"./strace-static-x86_64: Process 6343 attached [pid 4998] <... mkdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6342 attached [pid 6343] chdir("./109" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] mkdir("./111", 0777 [pid 6343] <... chdir resumed>) = 0 [pid 6342] chdir("./112" [pid 4998] <... openat resumed>) = 3 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6342] <... chdir resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6343] <... prctl resumed>) = 0 [pid 6342] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6343] setpgid(0, 0 [pid 6342] <... prctl resumed>) = 0 [pid 4998] close(3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6343] <... setpgid resumed>) = 0 [pid 6342] setpgid(0, 0 [pid 4998] <... close resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] lstat("./110/file0", [pid 6343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6342] <... setpgid resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] close(3 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6343] <... openat resumed>) = 3 [pid 4994] <... close resumed>) = 0 [pid 4993] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6343] write(3, "1000", 4 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6343] <... write resumed>) = 4 [pid 6342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6343] close(3 [pid 6342] <... openat resumed>) = 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6344 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6345 [pid 4993] <... openat resumed>) = 4 [pid 6343] <... close resumed>) = 0 [pid 6342] write(3, "1000", 4 [pid 4993] fstat(4, ./strace-static-x86_64: Process 6344 attached [pid 6343] symlink("/dev/binderfs", "./binderfs" [pid 6342] <... write resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6344] chdir("./111" [pid 6343] <... symlink resumed>) = 0 [pid 6342] close(3 [pid 4993] getdents64(4, [pid 6344] <... chdir resumed>) = 0 [pid 6343] memfd_create("syzkaller", 0 [pid 6342] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 6345 attached [pid 6344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6343] <... memfd_create resumed>) = 3 [pid 6342] symlink("/dev/binderfs", "./binderfs" [pid 4993] getdents64(4, [pid 6345] chdir("./111" [pid 6344] <... prctl resumed>) = 0 [pid 6343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6342] <... symlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6345] <... chdir resumed>) = 0 [pid 6343] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6342] memfd_create("syzkaller", 0 [pid 4993] close(4 [pid 6344] setpgid(0, 0 [pid 6345] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6342] <... memfd_create resumed>) = 3 [pid 6344] <... setpgid resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6345] <... prctl resumed>) = 0 [pid 6344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] rmdir("./110/file0" [pid 6345] setpgid(0, 0 [pid 6344] <... openat resumed>) = 3 [pid 6342] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] <... rmdir resumed>) = 0 [pid 6345] <... setpgid resumed>) = 0 [pid 6344] write(3, "1000", 4 [pid 4993] getdents64(3, [pid 6345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6345] <... openat resumed>) = 3 [pid 4993] close(3 [pid 6345] write(3, "1000", 4 [pid 4993] <... close resumed>) = 0 [pid 6345] <... write resumed>) = 4 [pid 4993] rmdir("./110" [pid 6345] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 6345] <... close resumed>) = 0 [pid 6344] <... write resumed>) = 4 [pid 4993] mkdir("./111", 0777 [pid 6345] symlink("/dev/binderfs", "./binderfs" [pid 6344] close(3 [pid 4993] <... mkdir resumed>) = 0 [pid 6345] <... symlink resumed>) = 0 [pid 6344] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6345] memfd_create("syzkaller", 0 [pid 6344] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... openat resumed>) = 3 [pid 6345] <... memfd_create resumed>) = 3 [pid 6344] <... symlink resumed>) = 0 [pid 6343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6344] memfd_create("syzkaller", 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6345] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6344] <... memfd_create resumed>) = 3 [pid 4993] close(3 [pid 6344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6341] <... write resumed>) = 2097152 [pid 4993] <... close resumed>) = 0 [pid 6344] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6341] munmap(0x7f46b9f9b000, 2097152 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6346 ./strace-static-x86_64: Process 6346 attached [pid 6346] chdir("./111") = 0 [pid 6346] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6341] <... munmap resumed>) = 0 [pid 6346] <... prctl resumed>) = 0 [pid 6341] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6346] setpgid(0, 0 [pid 6341] <... openat resumed>) = 4 [pid 6346] <... setpgid resumed>) = 0 [pid 6341] ioctl(4, LOOP_SET_FD, 3 [pid 6346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6346] write(3, "1000", 4) = 4 [pid 6346] close(3) = 0 [pid 6346] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6346] memfd_create("syzkaller", 0) = 3 [pid 6346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6341] <... ioctl resumed>) = 0 [pid 6341] close(3) = 0 [pid 6341] mkdir("./file0", 0777) = 0 [ 137.077457][ T6341] loop4: detected capacity change from 0 to 4096 [pid 6341] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6342] <... write resumed>) = 2097152 [pid 6342] munmap(0x7f46b9f9b000, 2097152 [pid 6346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6343] <... write resumed>) = 2097152 [pid 6342] <... munmap resumed>) = 0 [pid 6342] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6342] ioctl(4, LOOP_SET_FD, 3 [pid 6343] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6343] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6343] ioctl(4, LOOP_SET_FD, 3 [pid 6344] <... write resumed>) = 2097152 [pid 6344] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6344] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6342] <... ioctl resumed>) = 0 [pid 6344] <... openat resumed>) = 4 [pid 6342] close(3 [pid 6345] <... write resumed>) = 2097152 [pid 6344] ioctl(4, LOOP_SET_FD, 3 [pid 6342] <... close resumed>) = 0 [ 137.126724][ T6341] NILFS (loop4): invalid segment: Checksum error in segment payload [ 137.151971][ T6342] loop3: detected capacity change from 0 to 4096 [ 137.158152][ T6343] loop2: detected capacity change from 0 to 4096 [ 137.166258][ T6341] NILFS (loop4): trying rollback from an earlier position [pid 6345] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6342] mkdir("./file0", 0777 [pid 6345] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6342] <... mkdir resumed>) = 0 [pid 6345] ioctl(4, LOOP_SET_FD, 3 [pid 6344] <... ioctl resumed>) = 0 [pid 6343] <... ioctl resumed>) = 0 [pid 6342] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6346] <... write resumed>) = 2097152 [ 137.188016][ T6344] loop5: detected capacity change from 0 to 4096 [ 137.198928][ T6345] loop1: detected capacity change from 0 to 4096 [ 137.209291][ T6341] NILFS (loop4): recovery complete [ 137.219341][ T6347] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.221588][ T6342] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6345] <... ioctl resumed>) = 0 [pid 6344] close(3 [pid 6343] close(3 [pid 6346] munmap(0x7f46b9f9b000, 2097152 [pid 6345] close(3 [pid 6344] <... close resumed>) = 0 [pid 6343] <... close resumed>) = 0 [pid 6346] <... munmap resumed>) = 0 [pid 6345] <... close resumed>) = 0 [pid 6344] mkdir("./file0", 0777 [pid 6343] mkdir("./file0", 0777 [pid 6346] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6345] mkdir("./file0", 0777 [pid 6344] <... mkdir resumed>) = 0 [pid 6343] <... mkdir resumed>) = 0 [pid 6346] <... openat resumed>) = 4 [pid 6345] <... mkdir resumed>) = 0 [pid 6344] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6343] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6346] ioctl(4, LOOP_SET_FD, 3 [pid 6345] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6346] <... ioctl resumed>) = 0 [pid 6346] close(3) = 0 [pid 6346] mkdir("./file0", 0777) = 0 [pid 6346] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6341] <... mount resumed>) = 0 [ 137.239243][ T6346] loop0: detected capacity change from 0 to 4096 [ 137.245951][ T6344] NILFS (loop5): invalid segment: Checksum error in segment payload [ 137.251926][ T6342] NILFS (loop3): trying rollback from an earlier position [ 137.255720][ T6343] NILFS (loop2): invalid segment: Checksum error in segment payload [ 137.265818][ T6344] NILFS (loop5): trying rollback from an earlier position [ 137.271853][ T6343] NILFS (loop2): trying rollback from an earlier position [pid 6341] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6341] chdir("./file0") = 0 [pid 6341] ioctl(4, LOOP_CLR_FD) = 0 [pid 6341] close(4) = 0 [ 137.286193][ T6345] NILFS (loop1): invalid segment: Checksum error in segment payload [ 137.294980][ T6346] NILFS (loop0): invalid segment: Checksum error in segment payload [ 137.301745][ T6345] NILFS (loop1): trying rollback from an earlier position [ 137.302968][ T6346] NILFS (loop0): trying rollback from an earlier position [ 137.307270][ T6342] NILFS (loop3): recovery complete [ 137.315123][ T6344] NILFS (loop5): recovery complete [ 137.331681][ T6343] NILFS (loop2): recovery complete [pid 6341] creat("./bus", 000 [pid 6343] <... mount resumed>) = 0 [pid 6343] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6342] <... mount resumed>) = 0 [pid 6341] <... creat resumed>) = 4 [pid 6341] unlink("./bus" [pid 6342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6341] <... unlink resumed>) = 0 [pid 6342] <... openat resumed>) = 3 [pid 6341] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6342] chdir("./file0") = 0 [pid 6342] ioctl(4, LOOP_CLR_FD) = 0 [pid 6342] close(4) = 0 [pid 6342] creat("./bus", 000 [pid 6343] <... openat resumed>) = 3 [pid 6343] chdir("./file0") = 0 [pid 6343] ioctl(4, LOOP_CLR_FD) = 0 [pid 6343] close(4) = 0 [pid 6343] creat("./bus", 000 [pid 6341] <... pwritev2 resumed>) = 65007 [ 137.337006][ T6346] NILFS (loop0): recovery complete [ 137.338759][ T6349] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.355112][ T6348] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.367994][ T6345] NILFS (loop1): recovery complete [ 137.375249][ T6351] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6341] exit_group(0 [pid 6344] <... mount resumed>) = 0 [pid 6341] <... exit_group resumed>) = ? [pid 6344] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6346] <... mount resumed>) = 0 [pid 6344] <... openat resumed>) = 3 [pid 6341] +++ exited with 0 +++ [pid 6343] <... creat resumed>) = 4 [pid 6343] unlink("./bus" [pid 6346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6344] chdir("./file0" [pid 6345] <... mount resumed>) = 0 [pid 6344] <... chdir resumed>) = 0 [pid 6346] <... openat resumed>) = 3 [pid 6345] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6346] chdir("./file0" [pid 6344] ioctl(4, LOOP_CLR_FD [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6341, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6343] <... unlink resumed>) = 0 [pid 6343] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6346] <... chdir resumed>) = 0 [pid 6344] <... ioctl resumed>) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 6345] <... openat resumed>) = 3 [pid 6345] chdir("./file0") = 0 [pid 6345] ioctl(4, LOOP_CLR_FD) = 0 [pid 6345] close(4) = 0 [pid 6345] creat("./bus", 000 [pid 6346] ioctl(4, LOOP_CLR_FD [pid 6344] close(4 [pid 4997] <... restart_syscall resumed>) = 0 [pid 6344] <... close resumed>) = 0 [pid 6346] <... ioctl resumed>) = 0 [pid 6346] close(4 [pid 6344] creat("./bus", 000 [pid 6346] <... close resumed>) = 0 [pid 4997] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6346] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6344] <... creat resumed>) = 4 [pid 4997] getdents64(3, [pid 6344] unlink("./bus" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6344] <... unlink resumed>) = 0 [pid 4997] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6344] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6345] <... creat resumed>) = 4 [pid 6345] unlink("./bus") = 0 [pid 4997] lstat("./111/binderfs", [pid 6346] <... creat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6346] unlink("./bus" [pid 4997] unlink("./111/binderfs" [pid 6345] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6342] <... creat resumed>) = 4 [pid 4997] <... unlink resumed>) = 0 [pid 6342] unlink("./bus" [ 137.391251][ T6352] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.403323][ T6350] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6344] <... pwritev2 resumed>) = 65007 [pid 6343] <... pwritev2 resumed>) = 65007 [pid 6342] <... unlink resumed>) = 0 [pid 6344] exit_group(0 [pid 6343] exit_group(0 [pid 6344] <... exit_group resumed>) = ? [pid 6343] <... exit_group resumed>) = ? [pid 6342] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6346] <... unlink resumed>) = 0 [pid 6343] +++ exited with 0 +++ [pid 6346] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6344] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6344, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6343, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 6342] <... pwritev2 resumed>) = 65007 [pid 6342] exit_group(0) = ? [pid 4998] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6345] <... pwritev2 resumed>) = 65007 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 6345] exit_group(0 [pid 4998] fstat(3, [pid 4995] fstat(3, [pid 6345] <... exit_group resumed>) = ? [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 6342] +++ exited with 0 +++ [pid 4997] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./111/file0") = 0 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4995] getdents64(3, [pid 6346] <... pwritev2 resumed>) = 65007 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6346] exit_group(0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6342, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./111/binderfs", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./109/binderfs", [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6346] <... exit_group resumed>) = ? [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6345] +++ exited with 0 +++ [pid 4998] unlink("./111/binderfs" [pid 4996] <... openat resumed>) = 3 [pid 4995] unlink("./109/binderfs" [pid 4998] <... unlink resumed>) = 0 [pid 4996] fstat(3, [pid 4995] <... unlink resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6345, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6346] +++ exited with 0 +++ [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./111" [pid 4998] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6346, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4996] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... restart_syscall resumed>) = 0 [pid 4997] mkdir("./112", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4994] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./112/binderfs", [pid 4993] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] unlink("./112/binderfs" [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 4996] <... unlink resumed>) = 0 [pid 4994] fstat(3, [pid 4993] <... openat resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(3, [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6353 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, ./strace-static-x86_64: Process 6353 attached [pid 6353] chdir("./112" [pid 4993] getdents64(3, [pid 6353] <... chdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6353] <... prctl resumed>) = 0 [pid 6353] setpgid(0, 0) = 0 [pid 6353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6353] write(3, "1000", 4) = 4 [pid 6353] close(3) = 0 [pid 6353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6353] memfd_create("syzkaller", 0) = 3 [pid 6353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./111/binderfs", [pid 4993] lstat("./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./111/binderfs" [pid 4993] unlink("./111/binderfs" [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4995] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./109/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./109/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./109/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./109") = 0 [pid 4995] mkdir("./110", 0777 [pid 4998] <... umount2 resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6353] <... write resumed>) = 2097152 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4998] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./111/file0", [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 6353] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... close resumed>) = 0 [pid 4998] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... umount2 resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6353] <... munmap resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 6353] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] rmdir("./111/file0" [pid 4996] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4993] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6353] <... openat resumed>) = 4 [pid 4998] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6354 [pid 4998] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] rmdir("./111" [pid 6353] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] lstat("./112/file0", [pid 4994] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] mkdir("./112", 0777) = 0 [pid 4993] lstat("./111/file0", [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6354 attached [pid 6354] chdir("./110") = 0 [pid 6354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6354] setpgid(0, 0) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6355 [pid 6354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6354] write(3, "1000", 4) = 4 [pid 6354] close(3) = 0 [pid 6354] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6354] memfd_create("syzkaller", 0) = 3 [pid 6354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./111/file0", [pid 4993] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6354] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6355 attached [pid 6355] chdir("./112") = 0 [pid 6355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6355] setpgid(0, 0) = 0 [pid 6355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6355] write(3, "1000", 4) = 4 [pid 6355] close(3) = 0 [pid 6355] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6355] memfd_create("syzkaller", 0) = 3 [pid 6355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 4 [pid 6355] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6353] <... ioctl resumed>) = 0 [pid 4996] fstat(4, [pid 4994] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] fstat(4, [pid 6353] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6353] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4994] fstat(4, [pid 4993] getdents64(4, [pid 6353] mkdir("./file0", 0777 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6353] <... mkdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 6353] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 137.677961][ T6353] loop4: detected capacity change from 0 to 4096 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] close(4 [pid 4994] getdents64(4, [pid 4993] close(4 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./112/file0" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] close(4 [pid 4993] rmdir("./111/file0" [pid 4996] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./111/file0" [pid 4993] getdents64(3, [pid 4994] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4993] close(3 [pid 4996] rmdir("./112" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 4993] rmdir("./111" [pid 4996] mkdir("./113", 0777 [pid 4994] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4994] rmdir("./111" [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... rmdir resumed>) = 0 [pid 4993] mkdir("./112", 0777 [pid 6354] <... write resumed>) = 2097152 [pid 4996] <... openat resumed>) = 3 [ 137.722833][ T6353] NILFS (loop4): invalid segment: Checksum error in segment payload [ 137.731653][ T6353] NILFS (loop4): trying rollback from an earlier position [pid 4994] mkdir("./112", 0777 [pid 6355] <... write resumed>) = 2097152 [pid 6354] munmap(0x7f46b9f9b000, 2097152 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... mkdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 6355] munmap(0x7f46b9f9b000, 2097152 [pid 6354] <... munmap resumed>) = 0 [pid 6353] <... mount resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6355] <... munmap resumed>) = 0 [pid 4996] close(3 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6355] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6354] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6353] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6355] <... openat resumed>) = 4 [pid 6354] <... openat resumed>) = 4 [pid 6353] <... openat resumed>) = 3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6354] ioctl(4, LOOP_SET_FD, 3 [pid 6353] chdir("./file0" [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 6357 attached [pid 6355] ioctl(4, LOOP_SET_FD, 3 [pid 6353] <... chdir resumed>) = 0 [pid 4994] close(3 [pid 4993] close(3 [pid 6357] chdir("./113" [pid 6355] <... ioctl resumed>) = 0 [pid 6354] <... ioctl resumed>) = 0 [pid 6353] ioctl(4, LOOP_CLR_FD [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6357 [pid 4994] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6357] <... chdir resumed>) = 0 [pid 6355] close(3 [pid 6354] close(3 [pid 6353] <... ioctl resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6355] <... close resumed>) = 0 [pid 6354] <... close resumed>) = 0 [pid 6353] close(4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6354] mkdir("./file0", 0777 [pid 6353] <... close resumed>) = 0 [pid 6354] <... mkdir resumed>) = 0 [pid 6353] creat("./bus", 000 [pid 6357] <... prctl resumed>) = 0 [pid 6355] mkdir("./file0", 0777 [pid 6354] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6353] <... creat resumed>) = 4 [ 137.765337][ T6353] NILFS (loop4): recovery complete [ 137.772461][ T6356] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 137.785776][ T6354] loop2: detected capacity change from 0 to 4096 [ 137.796037][ T6355] loop5: detected capacity change from 0 to 4096 [pid 6357] setpgid(0, 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6358 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6359 ./strace-static-x86_64: Process 6358 attached [pid 6355] <... mkdir resumed>) = 0 [pid 6353] unlink("./bus" [pid 6357] <... setpgid resumed>) = 0 [pid 6358] chdir("./112" [pid 6355] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6353] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 6359 attached [pid 6358] <... chdir resumed>) = 0 [pid 6357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6353] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6359] chdir("./112" [pid 6358] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6357] <... openat resumed>) = 3 [pid 6359] <... chdir resumed>) = 0 [pid 6359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6359] setpgid(0, 0) = 0 [pid 6359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6359] write(3, "1000", 4) = 4 [pid 6359] close(3) = 0 [pid 6359] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6358] <... prctl resumed>) = 0 [pid 6359] memfd_create("syzkaller", 0 [pid 6358] setpgid(0, 0 [pid 6357] write(3, "1000", 4 [pid 6353] <... pwritev2 resumed>) = 65007 [pid 6359] <... memfd_create resumed>) = 3 [pid 6358] <... setpgid resumed>) = 0 [pid 6357] <... write resumed>) = 4 [pid 6353] exit_group(0 [pid 6359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6357] close(3 [pid 6353] <... exit_group resumed>) = ? [pid 6359] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6358] <... openat resumed>) = 3 [pid 6357] <... close resumed>) = 0 [pid 6358] write(3, "1000", 4 [pid 6357] symlink("/dev/binderfs", "./binderfs" [pid 6358] <... write resumed>) = 4 [ 137.819320][ T6354] NILFS (loop2): invalid segment: Checksum error in segment payload [ 137.838693][ T6355] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6357] <... symlink resumed>) = 0 [pid 6358] close(3 [pid 6357] memfd_create("syzkaller", 0 [pid 6358] <... close resumed>) = 0 [pid 6358] symlink("/dev/binderfs", "./binderfs" [pid 6357] <... memfd_create resumed>) = 3 [pid 6358] <... symlink resumed>) = 0 [pid 6353] +++ exited with 0 +++ [pid 6357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6353, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6358] memfd_create("syzkaller", 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6358] <... memfd_create resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] lstat("./112/binderfs", [pid 6358] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./112/binderfs") = 0 [pid 4997] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... openat resumed>) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 137.865844][ T6355] NILFS (loop5): trying rollback from an earlier position [ 137.888767][ T6354] NILFS (loop2): trying rollback from an earlier position [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./112/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./112") = 0 [pid 4997] mkdir("./113", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 6355] <... mount resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6355] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6355] <... openat resumed>) = 3 [pid 4997] close(3 [pid 6355] chdir("./file0" [pid 4997] <... close resumed>) = 0 [pid 6355] <... chdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6355] ioctl(4, LOOP_CLR_FD) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6361 [pid 6355] close(4) = 0 [pid 6355] creat("./bus", 000 [pid 6357] <... write resumed>) = 2097152 [pid 6359] <... write resumed>) = 2097152 [pid 6359] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 137.944623][ T6355] NILFS (loop5): recovery complete [ 137.961051][ T6354] NILFS (loop2): recovery complete [ 137.968181][ T6360] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ./strace-static-x86_64: Process 6361 attached [pid 6359] ioctl(4, LOOP_SET_FD, 3 [pid 6358] <... write resumed>) = 2097152 [pid 6357] munmap(0x7f46b9f9b000, 2097152 [pid 6361] chdir("./113" [pid 6358] munmap(0x7f46b9f9b000, 2097152 [pid 6357] <... munmap resumed>) = 0 [pid 6355] <... creat resumed>) = 4 [pid 6354] <... mount resumed>) = 0 [pid 6361] <... chdir resumed>) = 0 [pid 6358] <... munmap resumed>) = 0 [pid 6357] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6355] unlink("./bus" [pid 6361] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6358] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6357] <... openat resumed>) = 4 [pid 6355] <... unlink resumed>) = 0 [pid 6361] <... prctl resumed>) = 0 [pid 6359] <... ioctl resumed>) = 0 [pid 6358] <... openat resumed>) = 4 [pid 6357] ioctl(4, LOOP_SET_FD, 3 [pid 6355] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6361] setpgid(0, 0 [pid 6359] close(3 [pid 6358] ioctl(4, LOOP_SET_FD, 3 [pid 6354] <... openat resumed>) = 3 [pid 6354] chdir("./file0") = 0 [pid 6354] ioctl(4, LOOP_CLR_FD) = 0 [pid 6354] close(4) = 0 [pid 6354] creat("./bus", 000 [pid 6357] <... ioctl resumed>) = 0 [pid 6357] close(3) = 0 [pid 6357] mkdir("./file0", 0777) = 0 [pid 6357] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6361] <... setpgid resumed>) = 0 [pid 6361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6361] write(3, "1000", 4) = 4 [pid 6361] close(3) = 0 [pid 6361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6361] memfd_create("syzkaller", 0) = 3 [pid 6361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 138.003937][ T6362] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.017378][ T6359] loop0: detected capacity change from 0 to 4096 [ 138.026452][ T6357] loop3: detected capacity change from 0 to 4096 [ 138.033484][ T6358] loop1: detected capacity change from 0 to 4096 [pid 6359] <... close resumed>) = 0 [pid 6354] <... creat resumed>) = 4 [pid 6359] mkdir("./file0", 0777 [pid 6358] <... ioctl resumed>) = 0 [pid 6355] <... pwritev2 resumed>) = 65007 [pid 6354] unlink("./bus" [pid 6359] <... mkdir resumed>) = 0 [pid 6358] close(3 [pid 6355] exit_group(0 [pid 6359] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6358] <... close resumed>) = 0 [pid 6355] <... exit_group resumed>) = ? [pid 6354] <... unlink resumed>) = 0 [pid 6358] mkdir("./file0", 0777 [pid 6354] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6358] <... mkdir resumed>) = 0 [pid 6355] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6355, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6358] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./112/binderfs") = 0 [ 138.065928][ T6357] NILFS (loop3): invalid segment: Checksum error in segment payload [ 138.101769][ T6359] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4998] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6354] <... pwritev2 resumed>) = 65007 [pid 6354] exit_group(0) = ? [pid 6354] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6354, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./110/binderfs") = 0 [ 138.103950][ T6358] NILFS (loop1): invalid segment: Checksum error in segment payload [ 138.115748][ T6357] NILFS (loop3): trying rollback from an earlier position [ 138.119188][ T6358] NILFS (loop1): trying rollback from an earlier position [ 138.134233][ T6359] NILFS (loop0): trying rollback from an earlier position [pid 4995] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./112/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./110/file0", [pid 4998] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6361] <... write resumed>) = 2097152 [pid 6361] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6361] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6361] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 138.184025][ T6357] NILFS (loop3): recovery complete [ 138.198983][ T6359] NILFS (loop0): recovery complete [ 138.216529][ T6358] NILFS (loop1): recovery complete [ 138.221400][ T6363] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(4, [pid 4995] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 4998] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 4998] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6361] <... ioctl resumed>) = 0 [pid 6358] <... mount resumed>) = 0 [pid 6357] <... mount resumed>) = 0 [pid 6361] close(3 [pid 6358] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6357] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6361] <... close resumed>) = 0 [pid 6358] <... openat resumed>) = 3 [pid 6357] <... openat resumed>) = 3 [pid 6361] mkdir("./file0", 0777 [pid 6358] chdir("./file0" [pid 6357] chdir("./file0" [pid 6361] <... mkdir resumed>) = 0 [pid 6358] <... chdir resumed>) = 0 [pid 6357] <... chdir resumed>) = 0 [pid 6361] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6358] ioctl(4, LOOP_CLR_FD [pid 6357] ioctl(4, LOOP_CLR_FD [pid 6358] <... ioctl resumed>) = 0 [pid 6357] <... ioctl resumed>) = 0 [pid 6358] close(4 [pid 6357] close(4 [pid 6359] <... mount resumed>) = 0 [pid 6358] <... close resumed>) = 0 [pid 6357] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 6359] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6358] creat("./bus", 000 [pid 6357] creat("./bus", 000 [pid 4998] close(4 [pid 6359] <... openat resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6359] chdir("./file0") = 0 [pid 4998] <... close resumed>) = 0 [pid 4995] close(4 [pid 6359] ioctl(4, LOOP_CLR_FD) = 0 [pid 6359] close(4) = 0 [pid 6359] creat("./bus", 000 [pid 6357] <... creat resumed>) = 4 [pid 4998] rmdir("./112/file0" [pid 4995] <... close resumed>) = 0 [pid 6357] unlink("./bus" [pid 4998] <... rmdir resumed>) = 0 [pid 4995] rmdir("./110/file0") = 0 [ 138.227511][ T6361] loop4: detected capacity change from 0 to 4096 [ 138.242290][ T6364] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.253223][ T6365] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.270648][ T6361] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6358] <... creat resumed>) = 4 [pid 6357] <... unlink resumed>) = 0 [pid 4998] getdents64(3, [pid 6359] <... creat resumed>) = 4 [pid 4995] getdents64(3, [pid 6359] unlink("./bus" [pid 6358] unlink("./bus" [pid 6357] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 4995] close(3 [pid 4998] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6358] <... unlink resumed>) = 0 [pid 4998] rmdir("./112" [pid 4995] rmdir("./110" [pid 6359] <... unlink resumed>) = 0 [pid 6358] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6359] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] mkdir("./113", 0777 [pid 6357] <... pwritev2 resumed>) = 65007 [pid 6357] exit_group(0) = ? [pid 4995] mkdir("./111", 0777 [pid 4998] <... mkdir resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [ 138.281313][ T6361] NILFS (loop4): trying rollback from an earlier position [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6357] +++ exited with 0 +++ [pid 4998] <... openat resumed>) = 3 [pid 6358] <... pwritev2 resumed>) = 65007 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6357, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] <... openat resumed>) = 3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4998] close(3 [pid 4996] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6361] <... mount resumed>) = 0 [pid 6358] exit_group(0 [pid 4998] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 6361] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6361] chdir("./file0") = 0 [pid 6361] ioctl(4, LOOP_CLR_FD) = 0 [pid 6361] close(4) = 0 [pid 6361] creat("./bus", 000 [pid 6358] <... exit_group resumed>) = ? [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6359] <... pwritev2 resumed>) = 65007 [pid 6359] exit_group(0) = ? [pid 6359] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6359, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6367 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6368 [pid 4993] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] fstat(3, [pid 4996] lstat("./113/binderfs", [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6361] <... creat resumed>) = 4 [pid 6361] unlink("./bus" [pid 4993] getdents64(3, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./113/binderfs" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./112/binderfs", ./strace-static-x86_64: Process 6367 attached {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./112/binderfs" [pid 6367] chdir("./113" [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6361] <... unlink resumed>) = 0 [ 138.330519][ T6361] NILFS (loop4): recovery complete [ 138.338079][ T6366] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6361] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6358] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6358, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6367] <... chdir resumed>) = 0 [pid 6367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6367] setpgid(0, 0) = 0 [pid 6367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6368 attached [pid 6368] chdir("./111" [pid 4993] <... umount2 resumed>) = 0 [pid 4994] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6368] <... chdir resumed>) = 0 [pid 6367] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4993] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6367] write(3, "1000", 4 [pid 6368] <... prctl resumed>) = 0 [pid 6367] <... write resumed>) = 4 [pid 6361] <... pwritev2 resumed>) = 65007 [pid 4996] lstat("./113/file0", [pid 4994] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6368] setpgid(0, 0 [pid 6367] close(3 [pid 6361] exit_group(0 [pid 6368] <... setpgid resumed>) = 0 [pid 6367] <... close resumed>) = 0 [pid 6361] <... exit_group resumed>) = ? [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./112/file0", [pid 6368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6367] symlink("/dev/binderfs", "./binderfs" [pid 6368] <... openat resumed>) = 3 [pid 6367] <... symlink resumed>) = 0 [pid 4996] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6368] write(3, "1000", 4 [pid 6367] memfd_create("syzkaller", 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6368] <... write resumed>) = 4 [pid 6367] <... memfd_create resumed>) = 3 [pid 6361] +++ exited with 0 +++ [pid 6368] close(3 [pid 6367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6361, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6368] <... close resumed>) = 0 [pid 6367] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4996] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6368] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... restart_syscall resumed>) = 0 [pid 6368] <... symlink resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6368] memfd_create("syzkaller", 0) = 3 [pid 4997] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6368] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] fstat(4, [pid 4994] lstat("./112/binderfs", [pid 4993] <... openat resumed>) = 4 [pid 6367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] fstat(4, [pid 6368] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] unlink("./112/binderfs" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./113/binderfs", [pid 4994] <... unlink resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] getdents64(4, [pid 4993] getdents64(4, [pid 4997] unlink("./113/binderfs" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(4 [pid 4993] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4996] rmdir("./113/file0" [pid 4993] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] rmdir("./112/file0" [pid 4996] getdents64(3, [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 4996] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6368] <... write resumed>) = 2097152 [pid 6367] <... write resumed>) = 2097152 [pid 4996] <... close resumed>) = 0 [pid 4993] close(3 [pid 6367] munmap(0x7f46b9f9b000, 2097152 [pid 4996] rmdir("./113" [pid 4993] <... close resumed>) = 0 [pid 6368] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 6367] <... munmap resumed>) = 0 [pid 4993] rmdir("./112" [pid 4996] mkdir("./114", 0777 [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4993] mkdir("./113", 0777) = 0 [pid 6367] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6367] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] close(3 [pid 4996] <... openat resumed>) = 3 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./113/file0", [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4996] close(3 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6369 [pid 4994] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6368] <... munmap resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] <... openat resumed>) = 4 [pid 4997] fstat(4, [pid 4994] fstat(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6370 attached ./strace-static-x86_64: Process 6369 attached [pid 6368] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6367] <... ioctl resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6368] <... openat resumed>) = 4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6370 [pid 4997] getdents64(4, [pid 6368] ioctl(4, LOOP_SET_FD, 3 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] close(4 [pid 4997] rmdir("./113/file0" [pid 4994] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] rmdir("./112/file0") = 0 [pid 6369] chdir("./113" [pid 4997] getdents64(3, [pid 4994] getdents64(3, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6369] <... chdir resumed>) = 0 [pid 4997] close(3 [pid 4994] close(3 [pid 6369] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6369] <... prctl resumed>) = 0 [pid 4997] rmdir("./113" [pid 4994] rmdir("./112" [pid 6370] chdir("./114" [pid 6369] setpgid(0, 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6370] <... chdir resumed>) = 0 [pid 6369] <... setpgid resumed>) = 0 [pid 4997] mkdir("./114", 0777 [pid 4994] mkdir("./113", 0777 [pid 6370] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6370] <... prctl resumed>) = 0 [pid 6369] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6370] setpgid(0, 0 [pid 6369] write(3, "1000", 4 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 6370] <... setpgid resumed>) = 0 [pid 6369] <... write resumed>) = 4 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6369] close(3 [pid 6368] <... ioctl resumed>) = 0 [pid 6367] close(3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6370] <... openat resumed>) = 3 [pid 6369] <... close resumed>) = 0 [pid 4997] close(3 [pid 4994] close(3 [pid 6370] write(3, "1000", 4 [pid 6369] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6370] <... write resumed>) = 4 [pid 6369] <... symlink resumed>) = 0 [pid 6368] close(3 [pid 6367] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6370] close(3 [pid 6369] memfd_create("syzkaller", 0 [pid 6368] <... close resumed>) = 0 [pid 6367] mkdir("./file0", 0777 [pid 6370] <... close resumed>) = 0 [pid 6369] <... memfd_create resumed>) = 3 [pid 6368] mkdir("./file0", 0777 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6371 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6372 [pid 6370] symlink("/dev/binderfs", "./binderfs" [pid 6369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6370] <... symlink resumed>) = 0 [pid 6369] <... mmap resumed>) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6371 attached [pid 6370] memfd_create("syzkaller", 0 [pid 6368] <... mkdir resumed>) = 0 [pid 6367] <... mkdir resumed>) = 0 [pid 6371] chdir("./114" [pid 6370] <... memfd_create resumed>) = 3 [pid 6368] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6367] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6371] <... chdir resumed>) = 0 [pid 6370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 138.533258][ T6367] loop5: detected capacity change from 0 to 4096 [ 138.568161][ T6368] loop2: detected capacity change from 0 to 4096 [pid 6371] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6372 attached [pid 6372] chdir("./113") = 0 [pid 6372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6372] setpgid(0, 0) = 0 [pid 6372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6372] write(3, "1000", 4) = 4 [pid 6372] close(3) = 0 [pid 6372] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6372] memfd_create("syzkaller", 0) = 3 [pid 6372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6371] <... prctl resumed>) = 0 [pid 6371] setpgid(0, 0 [pid 6370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6371] <... setpgid resumed>) = 0 [pid 6371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6371] write(3, "1000", 4) = 4 [pid 6371] close(3) = 0 [pid 6369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6371] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6371] memfd_create("syzkaller", 0) = 3 [pid 6371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 138.618876][ T6367] NILFS (loop5): invalid segment: Checksum error in segment payload [ 138.631946][ T6368] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 138.659504][ T6367] NILFS (loop5): trying rollback from an earlier position [ 138.677072][ T6368] NILFS (loop2): trying rollback from an earlier position [ 138.696215][ T6367] NILFS (loop5): recovery complete [pid 6372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6371] <... write resumed>) = 2097152 [pid 6370] <... write resumed>) = 2097152 [pid 6367] <... mount resumed>) = 0 [pid 6367] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6371] munmap(0x7f46b9f9b000, 2097152 [pid 6370] munmap(0x7f46b9f9b000, 2097152 [pid 6367] <... openat resumed>) = 3 [pid 6371] <... munmap resumed>) = 0 [pid 6370] <... munmap resumed>) = 0 [pid 6367] chdir("./file0" [pid 6371] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6370] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6369] <... write resumed>) = 2097152 [pid 6367] <... chdir resumed>) = 0 [ 138.710596][ T6373] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 138.727118][ T6368] NILFS (loop2): recovery complete [ 138.742107][ T6369] loop0: detected capacity change from 0 to 4096 [ 138.744483][ T6371] loop4: detected capacity change from 0 to 4096 [pid 6367] ioctl(4, LOOP_CLR_FD) = 0 [pid 6371] <... openat resumed>) = 4 [pid 6367] close(4 [pid 6371] ioctl(4, LOOP_SET_FD, 3 [pid 6370] <... openat resumed>) = 4 [pid 6367] <... close resumed>) = 0 [pid 6367] creat("./bus", 000 [pid 6369] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6369] ioctl(4, LOOP_SET_FD, 3 [pid 6370] ioctl(4, LOOP_SET_FD, 3 [pid 6367] <... creat resumed>) = 4 [pid 6367] unlink("./bus" [pid 6369] <... ioctl resumed>) = 0 [pid 6369] close(3) = 0 [pid 6369] mkdir("./file0", 0777) = 0 [pid 6367] <... unlink resumed>) = 0 [pid 6367] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6370] <... ioctl resumed>) = 0 [pid 6369] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6372] <... write resumed>) = 2097152 [pid 6372] munmap(0x7f46b9f9b000, 2097152 [pid 6370] close(3) = 0 [pid 6370] mkdir("./file0", 0777 [pid 6372] <... munmap resumed>) = 0 [pid 6370] <... mkdir resumed>) = 0 [pid 6372] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6370] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6372] <... openat resumed>) = 4 [pid 6372] ioctl(4, LOOP_SET_FD, 3 [pid 6368] <... mount resumed>) = 0 [pid 6368] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6368] chdir("./file0") = 0 [pid 6368] ioctl(4, LOOP_CLR_FD) = 0 [pid 6368] close(4) = 0 [pid 6368] creat("./bus", 000 [pid 6367] <... pwritev2 resumed>) = 65007 [pid 6371] <... ioctl resumed>) = 0 [pid 6367] exit_group(0 [pid 6371] close(3 [pid 6367] <... exit_group resumed>) = ? [ 138.755348][ T6370] loop3: detected capacity change from 0 to 4096 [ 138.773838][ T6372] loop1: detected capacity change from 0 to 4096 [ 138.776198][ T6374] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6371] <... close resumed>) = 0 [pid 6367] +++ exited with 0 +++ [pid 6372] <... ioctl resumed>) = 0 [pid 6371] mkdir("./file0", 0777 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6367, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6372] close(3 [pid 6371] <... mkdir resumed>) = 0 [pid 6368] <... creat resumed>) = 4 [pid 6372] <... close resumed>) = 0 [pid 6371] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6372] mkdir("./file0", 0777) = 0 [pid 6368] unlink("./bus" [pid 4998] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6372] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 6368] <... unlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6368] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 138.812033][ T6370] NILFS (loop3): invalid segment: Checksum error in segment payload [ 138.817271][ T6369] NILFS (loop0): invalid segment: Checksum error in segment payload [ 138.825241][ T6370] NILFS (loop3): trying rollback from an earlier position [ 138.830831][ T6369] NILFS (loop0): trying rollback from an earlier position [ 138.851125][ T6370] NILFS (loop3): recovery complete [pid 4998] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./113/binderfs") = 0 [pid 4998] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6368] <... pwritev2 resumed>) = 65007 [pid 6370] <... mount resumed>) = 0 [pid 6368] exit_group(0 [pid 6370] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6368] <... exit_group resumed>) = ? [pid 6370] <... openat resumed>) = 3 [pid 6370] chdir("./file0") = 0 [pid 6370] ioctl(4, LOOP_CLR_FD) = 0 [ 138.865168][ T6371] NILFS (loop4): invalid segment: Checksum error in segment payload [ 138.870675][ T6372] NILFS (loop1): invalid segment: Checksum error in segment payload [ 138.874964][ T6369] NILFS (loop0): recovery complete [ 138.887294][ T6371] NILFS (loop4): trying rollback from an earlier position [ 138.889761][ T6372] NILFS (loop1): trying rollback from an earlier position [ 138.902401][ T6375] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6370] close(4) = 0 [pid 6370] creat("./bus", 000 [pid 6368] +++ exited with 0 +++ [pid 6370] <... creat resumed>) = 4 [pid 6370] unlink("./bus" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6368, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6370] <... unlink resumed>) = 0 [pid 4995] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6370] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6369] <... mount resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 138.926207][ T6371] NILFS (loop4): recovery complete [ 138.939571][ T6376] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] getdents64(3, [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./113/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 6371] <... mount resumed>) = 0 [pid 6369] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6371] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6369] <... openat resumed>) = 3 [pid 4995] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6371] <... openat resumed>) = 3 [pid 6369] chdir("./file0" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6371] chdir("./file0" [pid 6369] <... chdir resumed>) = 0 [pid 4995] lstat("./111/binderfs", [pid 6371] <... chdir resumed>) = 0 [pid 6369] ioctl(4, LOOP_CLR_FD [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6371] ioctl(4, LOOP_CLR_FD [pid 6369] <... ioctl resumed>) = 0 [pid 4995] unlink("./111/binderfs" [pid 6371] <... ioctl resumed>) = 0 [pid 6369] close(4 [pid 4995] <... unlink resumed>) = 0 [pid 6371] close(4 [pid 6369] <... close resumed>) = 0 [pid 4995] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6371] <... close resumed>) = 0 [pid 6369] creat("./bus", 000 [pid 6371] creat("./bus", 000 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./113/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./113") = 0 [pid 4998] mkdir("./114", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6371] <... creat resumed>) = 4 [pid 6371] unlink("./bus") = 0 [pid 6369] <... creat resumed>) = 4 [pid 6371] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 138.967054][ T6372] NILFS (loop1): recovery complete [ 138.967073][ T6377] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6369] unlink("./bus" [pid 6372] <... mount resumed>) = 0 [pid 6370] <... pwritev2 resumed>) = 65007 [pid 6369] <... unlink resumed>) = 0 [pid 6370] exit_group(0 [pid 6369] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6370] <... exit_group resumed>) = ? [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6378 ./strace-static-x86_64: Process 6378 attached [pid 6378] chdir("./114") = 0 [pid 6378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6378] setpgid(0, 0) = 0 [pid 6378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6370] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6370, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6372] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6378] <... openat resumed>) = 3 [pid 6378] write(3, "1000", 4 [pid 6372] <... openat resumed>) = 3 [pid 4996] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6378] <... write resumed>) = 4 [pid 6378] close(3) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6371] <... pwritev2 resumed>) = 65007 [pid 4996] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6372] chdir("./file0" [pid 6371] exit_group(0 [pid 6369] <... pwritev2 resumed>) = 65007 [pid 6372] <... chdir resumed>) = 0 [pid 6371] <... exit_group resumed>) = ? [pid 6369] exit_group(0 [pid 4996] <... openat resumed>) = 3 [pid 6378] symlink("/dev/binderfs", "./binderfs" [pid 6372] ioctl(4, LOOP_CLR_FD [pid 6369] <... exit_group resumed>) = ? [ 139.021442][ T6379] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] <... umount2 resumed>) = 0 [pid 6378] <... symlink resumed>) = 0 [pid 6372] <... ioctl resumed>) = 0 [pid 4996] fstat(3, [pid 4995] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6372] close(4 [pid 6378] memfd_create("syzkaller", 0 [pid 6372] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... openat resumed>) = 4 [pid 6372] creat("./bus", 000 [pid 6378] <... memfd_create resumed>) = 3 [pid 4996] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6371] +++ exited with 0 +++ [pid 6369] +++ exited with 0 +++ [pid 4996] lstat("./114/binderfs", [pid 6378] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6372] <... creat resumed>) = 4 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6371, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6372] unlink("./bus" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6369, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 6372] <... unlink resumed>) = 0 [pid 4995] getdents64(4, [pid 6372] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] unlink("./114/binderfs" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 4996] <... unlink resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 6372] <... pwritev2 resumed>) = 65007 [pid 4995] rmdir("./111/file0" [pid 4993] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 6372] exit_group(0 [pid 4995] <... rmdir resumed>) = 0 [pid 6372] <... exit_group resumed>) = ? [pid 4995] getdents64(3, [pid 4997] fstat(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(3) = 0 [pid 4995] rmdir("./111" [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(3, [pid 4995] mkdir("./112", 0777 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4997] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] fstat(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4997] lstat("./114/binderfs", [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6378] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] unlink("./114/binderfs" [pid 4995] close(3 [pid 4993] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6380 [pid 4993] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./113/binderfs" [pid 6372] +++ exited with 0 +++ [pid 4993] <... unlink resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6372, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6380 attached [pid 4996] <... umount2 resumed>) = 0 [pid 6380] chdir("./112" [pid 4996] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6380] <... chdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] lstat("./114/file0", [pid 4994] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6380] <... prctl resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6380] setpgid(0, 0 [pid 4996] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6380] <... setpgid resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 6380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(3, [pid 4996] <... openat resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6380] <... openat resumed>) = 3 [pid 4996] fstat(4, [pid 6380] write(3, "1000", 4 [pid 4994] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6380] <... write resumed>) = 4 [pid 4996] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6380] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6380] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 6380] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6380] <... symlink resumed>) = 0 [pid 4996] close(4 [pid 4994] lstat("./113/binderfs", [pid 6380] memfd_create("syzkaller", 0 [pid 4996] <... close resumed>) = 0 [pid 6380] <... memfd_create resumed>) = 3 [pid 6378] <... write resumed>) = 2097152 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] rmdir("./114/file0" [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 6380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6378] munmap(0x7f46b9f9b000, 2097152 [pid 4997] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4994] unlink("./113/binderfs" [pid 4993] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6380] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6378] <... munmap resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6378] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] lstat("./114/file0", [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./113/file0", [pid 6378] <... openat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(3 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6378] ioctl(4, LOOP_SET_FD, 3 [pid 4997] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4993] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./114" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6378] <... ioctl resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6378] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4996] mkdir("./115", 0777 [pid 4993] <... openat resumed>) = 4 [pid 6378] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4996] <... mkdir resumed>) = 0 [pid 4993] fstat(4, [pid 6378] mkdir("./file0", 0777 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6378] <... mkdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] getdents64(4, [pid 6378] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] getdents64(4, [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4994] lstat("./113/file0", [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(4 [pid 4997] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 4997] rmdir("./114/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] rmdir("./113/file0" [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6381 [pid 4994] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] <... openat resumed>) = 4 [pid 4993] getdents64(3, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] fstat(4, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [ 139.217708][ T6378] loop5: detected capacity change from 0 to 4096 [pid 4997] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3./strace-static-x86_64: Process 6381 attached [pid 4997] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 6381] chdir("./115" [pid 4997] rmdir("./114" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] rmdir("./113" [pid 6381] <... chdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] getdents64(4, [pid 4993] <... rmdir resumed>) = 0 [pid 6381] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] mkdir("./115", 0777 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] mkdir("./114", 0777 [pid 6381] <... prctl resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] close(4 [pid 4993] <... mkdir resumed>) = 0 [pid 6381] setpgid(0, 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6381] <... setpgid resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] rmdir("./113/file0" [pid 4993] <... openat resumed>) = 3 [pid 6381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... rmdir resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6381] <... openat resumed>) = 3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] getdents64(3, [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6381] write(3, "1000", 4 [pid 4997] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 6381] <... write resumed>) = 4 [pid 6380] <... write resumed>) = 2097152 [pid 4997] <... close resumed>) = 0 [pid 4994] close(3 [pid 4993] <... close resumed>) = 0 [pid 6381] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6381] <... close resumed>) = 0 [pid 4994] rmdir("./113" [pid 6381] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6382 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6383 [pid 6381] <... symlink resumed>) = 0 [pid 4994] mkdir("./114", 0777 [pid 6381] memfd_create("syzkaller", 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6381] <... memfd_create resumed>) = 3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [ 139.269311][ T6378] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6383 attached [pid 6381] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 6382 attached [pid 6383] chdir("./114" [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6383] <... chdir resumed>) = 0 [pid 6382] chdir("./115" [pid 4994] close(3 [pid 6383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6382] <... chdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6383] <... prctl resumed>) = 0 [pid 6382] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6383] setpgid(0, 0 [pid 6382] <... prctl resumed>) = 0 [pid 6383] <... setpgid resumed>) = 0 [pid 6382] setpgid(0, 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6384 [pid 6383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6382] <... setpgid resumed>) = 0 [pid 6383] <... openat resumed>) = 3 [pid 6382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6383] write(3, "1000", 4 [pid 6382] <... openat resumed>) = 3 [pid 6383] <... write resumed>) = 4 [pid 6382] write(3, "1000", 4 [pid 6383] close(3 [pid 6382] <... write resumed>) = 4 [pid 6383] <... close resumed>) = 0 [pid 6382] close(3 [pid 6383] symlink("/dev/binderfs", "./binderfs" [pid 6382] <... close resumed>) = 0 [pid 6383] <... symlink resumed>) = 0 [pid 6382] symlink("/dev/binderfs", "./binderfs" [pid 6383] memfd_create("syzkaller", 0 [pid 6382] <... symlink resumed>) = 0 [pid 6383] <... memfd_create resumed>) = 3 [pid 6382] memfd_create("syzkaller", 0 [pid 6383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6382] <... memfd_create resumed>) = 3 [pid 6383] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 6384 attached [pid 6382] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6384] chdir("./114" [pid 6380] munmap(0x7f46b9f9b000, 2097152 [pid 6384] <... chdir resumed>) = 0 [pid 6380] <... munmap resumed>) = 0 [pid 6384] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6380] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6384] <... prctl resumed>) = 0 [pid 6380] <... openat resumed>) = 4 [pid 6384] setpgid(0, 0 [pid 6383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6380] ioctl(4, LOOP_SET_FD, 3 [pid 6384] <... setpgid resumed>) = 0 [ 139.314614][ T6378] NILFS (loop5): trying rollback from an earlier position [ 139.354220][ T6378] NILFS (loop5): recovery complete [pid 6380] <... ioctl resumed>) = 0 [pid 6384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6378] <... mount resumed>) = 0 [pid 6380] close(3 [pid 6384] write(3, "1000", 4 [pid 6380] <... close resumed>) = 0 [pid 6378] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6384] <... write resumed>) = 4 [pid 6380] mkdir("./file0", 0777 [pid 6378] <... openat resumed>) = 3 [pid 6384] close(3 [pid 6380] <... mkdir resumed>) = 0 [pid 6384] <... close resumed>) = 0 [pid 6378] chdir("./file0" [pid 6380] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6384] symlink("/dev/binderfs", "./binderfs" [pid 6378] <... chdir resumed>) = 0 [pid 6378] ioctl(4, LOOP_CLR_FD [pid 6384] <... symlink resumed>) = 0 [pid 6378] <... ioctl resumed>) = 0 [pid 6384] memfd_create("syzkaller", 0 [pid 6378] close(4 [pid 6384] <... memfd_create resumed>) = 3 [pid 6378] <... close resumed>) = 0 [pid 6384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6378] creat("./bus", 000 [pid 6384] <... mmap resumed>) = 0x7f46b9f9b000 [ 139.384404][ T6380] loop2: detected capacity change from 0 to 4096 [ 139.390962][ T6385] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6378] <... creat resumed>) = 4 [pid 6382] <... write resumed>) = 2097152 [pid 6378] unlink("./bus") = 0 [pid 6378] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6382] munmap(0x7f46b9f9b000, 2097152 [pid 6384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6383] <... write resumed>) = 2097152 [pid 6382] <... munmap resumed>) = 0 [pid 6382] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6382] ioctl(4, LOOP_SET_FD, 3 [pid 6378] <... pwritev2 resumed>) = 65007 [pid 6383] munmap(0x7f46b9f9b000, 2097152 [pid 6381] <... write resumed>) = 2097152 [pid 6378] exit_group(0 [pid 6383] <... munmap resumed>) = 0 [pid 6378] <... exit_group resumed>) = ? [pid 6383] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6381] munmap(0x7f46b9f9b000, 2097152 [pid 6383] <... openat resumed>) = 4 [pid 6381] <... munmap resumed>) = 0 [pid 6378] +++ exited with 0 +++ [pid 6383] ioctl(4, LOOP_SET_FD, 3 [ 139.428872][ T6380] NILFS (loop2): invalid segment: Checksum error in segment payload [ 139.462382][ T6380] NILFS (loop2): trying rollback from an earlier position [ 139.472516][ T6382] loop4: detected capacity change from 0 to 4096 [pid 6381] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6378, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 6381] <... openat resumed>) = 4 [pid 4998] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6383] <... ioctl resumed>) = 0 [pid 6381] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6383] close(3 [pid 6381] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6383] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 6383] mkdir("./file0", 0777 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6383] <... mkdir resumed>) = 0 [pid 4998] getdents64(3, [pid 6383] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./114/binderfs" [pid 6382] <... ioctl resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 6382] close(3 [pid 4998] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6382] <... close resumed>) = 0 [pid 6382] mkdir("./file0", 0777) = 0 [pid 6382] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6381] close(3) = 0 [pid 6381] mkdir("./file0", 0777) = 0 [pid 6381] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6384] <... write resumed>) = 2097152 [ 139.487864][ T6383] loop0: detected capacity change from 0 to 4096 [ 139.497575][ T6381] loop3: detected capacity change from 0 to 4096 [ 139.518659][ T6383] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6384] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6384] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6384] ioctl(4, LOOP_SET_FD, 3 [pid 6380] <... mount resumed>) = 0 [pid 6380] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6380] chdir("./file0") = 0 [pid 6380] ioctl(4, LOOP_CLR_FD) = 0 [pid 4998] <... openat resumed>) = 4 [ 139.547581][ T6380] NILFS (loop2): recovery complete [ 139.551699][ T6382] NILFS (loop4): invalid segment: Checksum error in segment payload [ 139.559502][ T6383] NILFS (loop0): trying rollback from an earlier position [ 139.569014][ T6381] NILFS (loop3): invalid segment: Checksum error in segment payload [ 139.573254][ T6382] NILFS (loop4): trying rollback from an earlier position [pid 6380] close(4) = 0 [pid 4998] fstat(4, [pid 6380] creat("./bus", 000 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 6384] <... ioctl resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 6384] close(3 [pid 4998] rmdir("./114/file0" [pid 6384] <... close resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 6384] mkdir("./file0", 0777 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6384] <... mkdir resumed>) = 0 [pid 4998] close(3 [pid 6384] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6380] <... creat resumed>) = 4 [pid 4998] <... close resumed>) = 0 [pid 6380] unlink("./bus" [pid 4998] rmdir("./114") = 0 [ 139.588163][ T6386] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 139.599196][ T6383] NILFS (loop0): recovery complete [ 139.607604][ T6384] loop1: detected capacity change from 0 to 4096 [ 139.624441][ T6382] NILFS (loop4): recovery complete [ 139.631183][ T6387] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] mkdir("./115", 0777 [pid 6383] <... mount resumed>) = 0 [pid 6380] <... unlink resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 6380] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6383] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6382] <... mount resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6389 [pid 6383] <... openat resumed>) = 3 [pid 6382] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY./strace-static-x86_64: Process 6389 attached [pid 6389] chdir("./115" [pid 6383] chdir("./file0" [pid 6382] <... openat resumed>) = 3 [pid 6380] <... pwritev2 resumed>) = 65007 [pid 6389] <... chdir resumed>) = 0 [pid 6383] <... chdir resumed>) = 0 [pid 6382] chdir("./file0" [pid 6380] exit_group(0 [pid 6389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6383] ioctl(4, LOOP_CLR_FD [pid 6382] <... chdir resumed>) = 0 [pid 6380] <... exit_group resumed>) = ? [pid 6389] <... prctl resumed>) = 0 [pid 6383] <... ioctl resumed>) = 0 [pid 6382] ioctl(4, LOOP_CLR_FD [pid 6389] setpgid(0, 0) = 0 [pid 6389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6389] write(3, "1000", 4) = 4 [pid 6389] close(3) = 0 [pid 6389] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6383] close(4 [pid 6382] <... ioctl resumed>) = 0 [ 139.635819][ T6384] NILFS (loop1): invalid segment: Checksum error in segment payload [ 139.641910][ T6381] NILFS (loop3): trying rollback from an earlier position [ 139.651259][ T6384] NILFS (loop1): trying rollback from an earlier position [ 139.666131][ T6388] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6389] memfd_create("syzkaller", 0 [pid 6383] <... close resumed>) = 0 [pid 6382] close(4 [pid 6380] +++ exited with 0 +++ [pid 6389] <... memfd_create resumed>) = 3 [pid 6383] creat("./bus", 000 [pid 6382] <... close resumed>) = 0 [pid 6389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6382] creat("./bus", 000 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6380, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 6389] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6384] <... mount resumed>) = 0 [pid 6383] <... creat resumed>) = 4 [pid 6382] <... creat resumed>) = 4 [pid 6383] unlink("./bus" [pid 4995] <... restart_syscall resumed>) = 0 [pid 6384] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6382] unlink("./bus" [pid 6384] <... openat resumed>) = 3 [pid 6383] <... unlink resumed>) = 0 [pid 6384] chdir("./file0" [pid 6383] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6382] <... unlink resumed>) = 0 [pid 6384] <... chdir resumed>) = 0 [pid 6384] ioctl(4, LOOP_CLR_FD [pid 6382] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6384] <... ioctl resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6384] close(4 [pid 6383] <... pwritev2 resumed>) = 65007 [ 139.702500][ T6384] NILFS (loop1): recovery complete [ 139.719705][ T6390] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6382] <... pwritev2 resumed>) = 65007 [pid 4995] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6384] <... close resumed>) = 0 [pid 6383] exit_group(0 [pid 6382] exit_group(0 [pid 4995] <... openat resumed>) = 3 [pid 6381] <... mount resumed>) = 0 [pid 6381] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6384] creat("./bus", 000 [pid 6383] <... exit_group resumed>) = ? [pid 6382] <... exit_group resumed>) = ? [pid 6381] <... openat resumed>) = 3 [pid 4995] fstat(3, [pid 6381] chdir("./file0") = 0 [ 139.767923][ T6381] NILFS (loop3): recovery complete [pid 6381] ioctl(4, LOOP_CLR_FD) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6381] close(4 [pid 4995] getdents64(3, [pid 6381] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6384] <... creat resumed>) = 4 [pid 6383] +++ exited with 0 +++ [pid 6382] +++ exited with 0 +++ [pid 6381] creat("./bus", 000 [pid 4995] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6389] <... write resumed>) = 2097152 [pid 6384] unlink("./bus" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6382, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4995] lstat("./112/binderfs", [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6383, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 6384] <... unlink resumed>) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6384] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4995] unlink("./112/binderfs" [pid 4993] <... restart_syscall resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4997] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6389] munmap(0x7f46b9f9b000, 2097152 [pid 6384] <... pwritev2 resumed>) = 65007 [pid 4997] fstat(3, [pid 4995] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 6384] exit_group(0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6389] <... munmap resumed>) = 0 [pid 6384] <... exit_group resumed>) = ? [pid 4997] getdents64(3, [pid 4993] getdents64(3, [pid 6389] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./115/binderfs", [pid 4993] lstat("./114/binderfs", [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 139.799527][ T6391] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./115/binderfs" [pid 4993] unlink("./114/binderfs" [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4997] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6389] <... openat resumed>) = 4 [pid 6389] ioctl(4, LOOP_SET_FD, 3 [pid 4997] <... umount2 resumed>) = 0 [pid 6384] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6384, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, [pid 6381] <... creat resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6381] unlink("./bus" [pid 4994] getdents64(3, [pid 6381] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6381] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6389] <... ioctl resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4994] unlink("./114/binderfs" [pid 4993] <... umount2 resumed>) = 0 [pid 6389] close(3 [pid 4997] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 6389] <... close resumed>) = 0 [pid 4994] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6389] mkdir("./file0", 0777 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6389] <... mkdir resumed>) = 0 [pid 4997] lstat("./115/file0", [pid 4995] lstat("./112/file0", [pid 6381] <... pwritev2 resumed>) = 65007 [ 139.882116][ T6389] loop5: detected capacity change from 0 to 4096 [pid 6381] exit_group(0) = ? [pid 6389] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 4 [pid 4993] <... openat resumed>) = 4 [pid 4997] fstat(4, [pid 4995] fstat(4, [pid 4993] fstat(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4993] getdents64(4, [pid 6381] +++ exited with 0 +++ [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6381, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] getdents64(4, [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./114/file0" [pid 4996] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = 0 [pid 4993] getdents64(3, [pid 4996] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4993] close(3 [pid 4996] fstat(3, [pid 4993] <... close resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] rmdir("./114" [pid 4997] getdents64(4, [pid 4996] getdents64(3, [pid 4995] getdents64(4, [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] mkdir("./115", 0777 [pid 4997] close(4 [pid 4996] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(4 [pid 4994] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... mkdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] rmdir("./115/file0" [pid 4996] lstat("./115/binderfs", [pid 4995] rmdir("./112/file0" [pid 4994] lstat("./114/file0", [pid 4993] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] getdents64(3, [pid 4996] unlink("./115/binderfs" [pid 4995] getdents64(3, [pid 4994] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(3 [pid 4997] close(3 [pid 4996] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4994] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6392 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./114/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./114") = 0 [pid 4994] mkdir("./115", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6393 ./strace-static-x86_64: Process 6392 attached [pid 6392] chdir("./115") = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] rmdir("./115" [pid 4995] rmdir("./112" [pid 6392] <... prctl resumed>) = 0 [pid 6392] setpgid(0, 0) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... rmdir resumed>) = 0 [pid 4995] mkdir("./113", 0777 [pid 6392] <... openat resumed>) = 3 [pid 4997] mkdir("./116", 0777 [pid 6392] write(3, "1000", 4./strace-static-x86_64: Process 6393 attached ) = 4 [pid 4995] <... mkdir resumed>) = 0 [pid 6392] close(3 [pid 4997] <... mkdir resumed>) = 0 [pid 6393] chdir("./115" [pid 6392] <... close resumed>) = 0 [pid 6393] <... chdir resumed>) = 0 [pid 6392] symlink("/dev/binderfs", "./binderfs" [pid 6393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6392] <... symlink resumed>) = 0 [pid 6393] <... prctl resumed>) = 0 [ 139.950139][ T6389] NILFS (loop5): invalid segment: Checksum error in segment payload [ 139.966558][ T6389] NILFS (loop5): trying rollback from an earlier position [pid 6392] memfd_create("syzkaller", 0 [pid 6393] setpgid(0, 0 [pid 6392] <... memfd_create resumed>) = 3 [pid 6393] <... setpgid resumed>) = 0 [pid 6392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6392] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6393] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6393] write(3, "1000", 4 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 6393] <... write resumed>) = 4 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6393] close(3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4995] close(3 [pid 6393] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6393] symlink("/dev/binderfs", "./binderfs" [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6393] <... symlink resumed>) = 0 [pid 6393] memfd_create("syzkaller", 0) = 3 [pid 6393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6394 [pid 6393] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6395 ./strace-static-x86_64: Process 6394 attached [pid 6394] chdir("./116") = 0 [pid 6394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6394] setpgid(0, 0) = 0 [pid 6394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 6395 attached [pid 6394] write(3, "1000", 4) = 4 [pid 6395] chdir("./113") = 0 [pid 6394] close(3 [pid 6395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6394] <... close resumed>) = 0 [pid 6394] symlink("/dev/binderfs", "./binderfs" [pid 6395] <... prctl resumed>) = 0 [pid 6394] <... symlink resumed>) = 0 [pid 6395] setpgid(0, 0 [pid 6394] memfd_create("syzkaller", 0 [pid 6395] <... setpgid resumed>) = 0 [pid 4996] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6394] <... memfd_create resumed>) = 3 [pid 6395] <... openat resumed>) = 3 [pid 6394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6389] <... mount resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6395] write(3, "1000", 4 [pid 6394] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6389] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] lstat("./115/file0", [pid 6395] <... write resumed>) = 4 [pid 6392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6389] <... openat resumed>) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6395] close(3 [pid 6389] chdir("./file0" [pid 4996] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6395] <... close resumed>) = 0 [pid 6389] <... chdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6395] symlink("/dev/binderfs", "./binderfs" [pid 6389] ioctl(4, LOOP_CLR_FD [pid 4996] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6395] <... symlink resumed>) = 0 [pid 6389] <... ioctl resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 6395] memfd_create("syzkaller", 0 [pid 6389] close(4 [pid 4996] fstat(4, [pid 6395] <... memfd_create resumed>) = 3 [pid 6389] <... close resumed>) = 0 [pid 6393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6389] creat("./bus", 000 [pid 6395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6395] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [ 140.035320][ T6389] NILFS (loop5): recovery complete [ 140.052105][ T6396] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] getdents64(4, [pid 6395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./115/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 6389] <... creat resumed>) = 4 [pid 4996] rmdir("./115" [pid 6389] unlink("./bus" [pid 4996] <... rmdir resumed>) = 0 [pid 6394] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6389] <... unlink resumed>) = 0 [pid 4996] mkdir("./116", 0777 [pid 6389] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 6389] <... pwritev2 resumed>) = 65007 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6389] exit_group(0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6389] <... exit_group resumed>) = ? [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6397 [pid 6392] <... write resumed>) = 2097152 [pid 6393] <... write resumed>) = 2097152 [pid 6392] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6392] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 6397 attached [pid 6389] +++ exited with 0 +++ [pid 6397] chdir("./116" [pid 6393] munmap(0x7f46b9f9b000, 2097152 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6389, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=4 /* 0.04 s */} --- [pid 6397] <... chdir resumed>) = 0 [pid 6393] <... munmap resumed>) = 0 [pid 6397] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6393] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6397] <... prctl resumed>) = 0 [pid 6393] <... openat resumed>) = 4 [pid 4998] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6397] setpgid(0, 0 [pid 6393] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6397] <... setpgid resumed>) = 0 [pid 6395] <... write resumed>) = 2097152 [pid 6394] <... write resumed>) = 2097152 [pid 6392] <... ioctl resumed>) = 0 [pid 6397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6395] munmap(0x7f46b9f9b000, 2097152 [pid 6394] munmap(0x7f46b9f9b000, 2097152 [pid 6392] close(3 [pid 6397] <... openat resumed>) = 3 [pid 6395] <... munmap resumed>) = 0 [pid 6394] <... munmap resumed>) = 0 [pid 6392] <... close resumed>) = 0 [pid 6397] write(3, "1000", 4 [pid 6395] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6394] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6397] <... write resumed>) = 4 [pid 6395] <... openat resumed>) = 4 [pid 6394] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 6397] close(3 [pid 6395] ioctl(4, LOOP_SET_FD, 3 [pid 6394] ioctl(4, LOOP_SET_FD, 3 [pid 4998] fstat(3, [pid 6397] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./115/binderfs") = 0 [pid 4998] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6393] <... ioctl resumed>) = 0 [pid 6393] close(3) = 0 [pid 6393] mkdir("./file0", 0777) = 0 [pid 6393] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6397] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6397] memfd_create("syzkaller", 0) = 3 [pid 6397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6395] <... ioctl resumed>) = 0 [pid 6392] mkdir("./file0", 0777 [pid 6395] close(3 [pid 6394] <... ioctl resumed>) = 0 [pid 6392] <... mkdir resumed>) = 0 [pid 6392] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6395] <... close resumed>) = 0 [pid 6394] close(3 [pid 6395] mkdir("./file0", 0777 [pid 6394] <... close resumed>) = 0 [pid 6395] <... mkdir resumed>) = 0 [pid 6394] mkdir("./file0", 0777 [pid 6395] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6394] <... mkdir resumed>) = 0 [pid 6394] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = 0 [ 140.184095][ T6392] loop0: detected capacity change from 0 to 4096 [ 140.202865][ T6393] loop1: detected capacity change from 0 to 4096 [ 140.211291][ T6395] loop2: detected capacity change from 0 to 4096 [ 140.219310][ T6394] loop4: detected capacity change from 0 to 4096 [pid 4998] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./115/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./115/file0") = 0 [pid 6397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [ 140.262051][ T6393] NILFS (loop1): invalid segment: Checksum error in segment payload [ 140.265406][ T6392] NILFS (loop0): invalid segment: Checksum error in segment payload [ 140.293715][ T6395] NILFS (loop2): invalid segment: Checksum error in segment payload [ 140.297028][ T6393] NILFS (loop1): trying rollback from an earlier position [pid 4998] rmdir("./115") = 0 [pid 4998] mkdir("./116", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6398 ./strace-static-x86_64: Process 6398 attached [pid 6398] chdir("./116") = 0 [pid 6397] <... write resumed>) = 2097152 [pid 6398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6398] setpgid(0, 0) = 0 [pid 6398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6398] write(3, "1000", 4) = 4 [pid 6398] close(3) = 0 [pid 6398] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6398] memfd_create("syzkaller", 0) = 3 [pid 6398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6397] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6397] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 140.305530][ T6394] NILFS (loop4): invalid segment: Checksum error in segment payload [ 140.326295][ T6395] NILFS (loop2): trying rollback from an earlier position [ 140.337660][ T6392] NILFS (loop0): trying rollback from an earlier position [ 140.342791][ T6394] NILFS (loop4): trying rollback from an earlier position [pid 6397] ioctl(4, LOOP_SET_FD, 3) = 0 [ 140.362889][ T6397] loop3: detected capacity change from 0 to 4096 [ 140.381263][ T6395] NILFS (loop2): recovery complete [ 140.388556][ T6394] NILFS (loop4): recovery complete [ 140.395474][ T6399] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.396888][ T6393] NILFS (loop1): recovery complete [pid 6398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6395] <... mount resumed>) = 0 [pid 6397] close(3 [pid 6394] <... mount resumed>) = 0 [pid 6397] <... close resumed>) = 0 [pid 6397] mkdir("./file0", 0777) = 0 [pid 6397] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6395] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6398] <... write resumed>) = 2097152 [pid 6395] <... openat resumed>) = 3 [pid 6394] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6393] <... mount resumed>) = 0 [pid 6395] chdir("./file0" [pid 6394] <... openat resumed>) = 3 [pid 6393] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6395] <... chdir resumed>) = 0 [pid 6394] chdir("./file0" [pid 6393] <... openat resumed>) = 3 [pid 6395] ioctl(4, LOOP_CLR_FD [pid 6394] <... chdir resumed>) = 0 [pid 6393] chdir("./file0" [pid 6395] <... ioctl resumed>) = 0 [pid 6394] ioctl(4, LOOP_CLR_FD [pid 6393] <... chdir resumed>) = 0 [pid 6395] close(4 [pid 6394] <... ioctl resumed>) = 0 [pid 6393] ioctl(4, LOOP_CLR_FD [pid 6395] <... close resumed>) = 0 [pid 6394] close(4 [pid 6393] <... ioctl resumed>) = 0 [pid 6395] creat("./bus", 000 [pid 6394] <... close resumed>) = 0 [pid 6393] close(4 [pid 6394] creat("./bus", 000 [pid 6393] <... close resumed>) = 0 [pid 6394] <... creat resumed>) = 4 [pid 6393] creat("./bus", 000 [pid 6394] unlink("./bus" [pid 6393] <... creat resumed>) = 4 [pid 6394] <... unlink resumed>) = 0 [pid 6393] unlink("./bus" [pid 6394] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6393] <... unlink resumed>) = 0 [pid 6395] <... creat resumed>) = 4 [ 140.413565][ T6392] NILFS (loop0): recovery complete [ 140.414583][ T6400] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.433877][ T6402] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.433896][ T6397] NILFS (loop3): invalid segment: Checksum error in segment payload [ 140.433914][ T6397] NILFS (loop3): trying rollback from an earlier position [pid 6393] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6395] unlink("./bus" [pid 6392] <... mount resumed>) = 0 [pid 6398] munmap(0x7f46b9f9b000, 2097152 [pid 6392] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6398] <... munmap resumed>) = 0 [pid 6392] <... openat resumed>) = 3 [pid 6395] <... unlink resumed>) = 0 [pid 6392] chdir("./file0" [pid 6395] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6392] <... chdir resumed>) = 0 [pid 6392] ioctl(4, LOOP_CLR_FD) = 0 [pid 6392] close(4) = 0 [pid 6392] creat("./bus", 000 [pid 6398] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6398] ioctl(4, LOOP_SET_FD, 3 [pid 6395] <... pwritev2 resumed>) = 65007 [pid 6395] exit_group(0) = ? [pid 6394] <... pwritev2 resumed>) = 65007 [pid 6394] exit_group(0) = ? [pid 6393] <... pwritev2 resumed>) = 65007 [pid 6393] exit_group(0 [pid 6392] <... creat resumed>) = 4 [pid 6393] <... exit_group resumed>) = ? [pid 6392] unlink("./bus") = 0 [pid 6392] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6393] +++ exited with 0 +++ [pid 6398] <... ioctl resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6393, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 6398] close(3) = 0 [pid 6398] mkdir("./file0", 0777 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6395] +++ exited with 0 +++ [pid 6398] <... mkdir resumed>) = 0 [pid 6394] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6395, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4994] <... restart_syscall resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6394, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6398] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 4997] <... openat resumed>) = 3 [pid 4995] fstat(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, [pid 4997] getdents64(3, [pid 4995] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [ 140.475066][ T6401] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 140.498965][ T6398] loop5: detected capacity change from 0 to 4096 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./115/binderfs", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] lstat("./116/binderfs", [pid 4995] lstat("./113/binderfs", [pid 4994] unlink("./115/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 6392] <... pwritev2 resumed>) = 65007 [pid 4997] unlink("./116/binderfs" [pid 4995] unlink("./113/binderfs" [pid 4994] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6392] exit_group(0 [pid 4997] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6392] <... exit_group resumed>) = ? [pid 4997] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6392] +++ exited with 0 +++ [ 140.555267][ T6398] NILFS (loop5): invalid segment: Checksum error in segment payload [ 140.564927][ T6398] NILFS (loop5): trying rollback from an earlier position [ 140.592029][ T6397] NILFS (loop3): recovery complete [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6392, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4994] lstat("./115/file0", [pid 4993] <... restart_syscall resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 4993] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(4, [pid 4993] <... openat resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(3, [pid 4994] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6397] <... mount resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(3, [pid 6397] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6397] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6397] chdir("./file0" [pid 4997] <... umount2 resumed>) = 0 [pid 4994] close(4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6397] <... chdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] lstat("./115/binderfs", [pid 6397] ioctl(4, LOOP_CLR_FD [pid 4994] rmdir("./115/file0" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6397] <... ioctl resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] unlink("./115/binderfs" [pid 6397] close(4 [pid 4994] getdents64(3, [pid 4993] <... unlink resumed>) = 0 [pid 6397] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6397] creat("./bus", 000 [pid 4994] close(3) = 0 [pid 4994] rmdir("./115" [pid 6397] <... creat resumed>) = 4 [ 140.613505][ T6398] NILFS (loop5): recovery complete [ 140.629565][ T6403] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 6397] unlink("./bus" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] mkdir("./116", 0777 [pid 4997] lstat("./116/file0", [pid 4995] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... mkdir resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./113/file0", [pid 4994] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... openat resumed>) = 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] close(3 [pid 4997] fstat(4, [pid 4995] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] getdents64(4, [pid 4995] fstat(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6405 [pid 6398] <... mount resumed>) = 0 [pid 6397] <... unlink resumed>) = 0 [pid 4997] getdents64(4, [pid 4995] getdents64(4, [pid 6398] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6397] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6398] <... openat resumed>) = 3 [pid 4997] close(4 [pid 4995] getdents64(4, [pid 6398] chdir("./file0" [pid 4997] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 6405 attached [pid 6398] <... chdir resumed>) = 0 [pid 4997] rmdir("./116/file0" [pid 4995] close(4 [pid 6405] chdir("./116" [pid 6398] ioctl(4, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6405] <... chdir resumed>) = 0 [pid 6398] <... ioctl resumed>) = 0 [pid 4997] getdents64(3, [pid 4995] rmdir("./113/file0" [pid 6405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6398] close(4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6405] <... prctl resumed>) = 0 [pid 6398] <... close resumed>) = 0 [pid 4997] close(3 [pid 4995] getdents64(3, [pid 6405] setpgid(0, 0 [pid 6398] creat("./bus", 000 [pid 4997] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6405] <... setpgid resumed>) = 0 [pid 4997] rmdir("./116" [pid 4995] close(3 [pid 6405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6405] <... openat resumed>) = 3 [pid 6398] <... creat resumed>) = 4 [pid 4997] mkdir("./117", 0777 [pid 4995] rmdir("./113" [pid 6405] write(3, "1000", 4 [pid 6398] unlink("./bus" [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6405] <... write resumed>) = 4 [pid 6398] <... unlink resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] mkdir("./114", 0777 [pid 6405] close(3 [pid 6398] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6397] <... pwritev2 resumed>) = 65007 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... mkdir resumed>) = 0 [pid 6405] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [ 140.689603][ T6404] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6405] symlink("/dev/binderfs", "./binderfs" [pid 6397] exit_group(0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = 0 [pid 6405] <... symlink resumed>) = 0 [pid 6397] <... exit_group resumed>) = ? [pid 4997] close(3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6405] memfd_create("syzkaller", 0 [pid 6398] <... pwritev2 resumed>) = 65007 [pid 4997] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6405] <... memfd_create resumed>) = 3 [pid 6398] exit_group(0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] close(3 [pid 6405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6398] <... exit_group resumed>) = ? [pid 4995] <... close resumed>) = 0 [pid 6405] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6397] +++ exited with 0 +++ [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6406 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6397, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6407 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./115/file0", ./strace-static-x86_64: Process 6407 attached ./strace-static-x86_64: Process 6406 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6407] chdir("./114" [pid 6406] chdir("./117" [pid 4993] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6407] <... chdir resumed>) = 0 [pid 6406] <... chdir resumed>) = 0 [pid 4996] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6407] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6406] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6407] <... prctl resumed>) = 0 [pid 6406] <... prctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6407] setpgid(0, 0 [pid 6406] setpgid(0, 0 [pid 4996] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 4 [pid 6407] <... setpgid resumed>) = 0 [pid 6406] <... setpgid resumed>) = 0 [pid 6398] +++ exited with 0 +++ [pid 4996] fstat(3, [pid 4993] fstat(4, [pid 6407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6398, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6406] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 6406] write(3, "1000", 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6406] <... write resumed>) = 4 [pid 4996] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6406] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6407] <... openat resumed>) = 3 [pid 6406] <... close resumed>) = 0 [pid 4996] lstat("./116/binderfs", [pid 4993] getdents64(4, [pid 6407] write(3, "1000", 4 [pid 6406] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6407] <... write resumed>) = 4 [pid 6406] <... symlink resumed>) = 0 [pid 6405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] unlink("./116/binderfs" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6406] memfd_create("syzkaller", 0 [pid 4996] <... unlink resumed>) = 0 [pid 4993] getdents64(4, [pid 6407] close(3 [pid 6406] <... memfd_create resumed>) = 3 [pid 4998] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6407] <... close resumed>) = 0 [pid 6406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 6407] symlink("/dev/binderfs", "./binderfs" [pid 6406] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6407] <... symlink resumed>) = 0 [pid 6406] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... openat resumed>) = 3 [pid 4993] <... close resumed>) = 0 [pid 6407] memfd_create("syzkaller", 0 [pid 4998] fstat(3, [pid 4993] rmdir("./115/file0" [pid 6407] <... memfd_create resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] getdents64(3, [pid 4993] <... rmdir resumed>) = 0 [pid 6407] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] getdents64(3, [pid 4998] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] lstat("./116/binderfs", [pid 4993] close(3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4998] unlink("./116/binderfs" [pid 4993] rmdir("./115" [pid 4998] <... unlink resumed>) = 0 [pid 4998] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./116", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6408 ./strace-static-x86_64: Process 6408 attached [pid 6408] chdir("./116") = 0 [pid 6408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6408] setpgid(0, 0) = 0 [pid 6407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = 0 [pid 6408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6408] write(3, "1000", 4 [pid 4996] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6408] <... write resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6408] close(3 [pid 6405] <... write resumed>) = 2097152 [pid 4996] lstat("./116/file0", [pid 6408] <... close resumed>) = 0 [pid 6408] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6408] <... symlink resumed>) = 0 [pid 4996] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6408] memfd_create("syzkaller", 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6405] munmap(0x7f46b9f9b000, 2097152 [pid 6408] <... memfd_create resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6405] <... munmap resumed>) = 0 [pid 6408] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... openat resumed>) = 4 [pid 4996] fstat(4, [pid 6405] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6405] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./116/file0" [pid 4998] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... rmdir resumed>) = 0 [pid 4998] lstat("./116/file0", [pid 4996] getdents64(3, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6406] <... write resumed>) = 2097152 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] close(3 [pid 4998] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] rmdir("./116" [pid 4998] fstat(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4996] mkdir("./117", 0777 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4996] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] close(4 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6407] <... write resumed>) = 2097152 [pid 4998] rmdir("./116/file0" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6408] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6407] munmap(0x7f46b9f9b000, 2097152 [pid 6406] munmap(0x7f46b9f9b000, 2097152 [pid 6405] <... ioctl resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 6405] close(3 [pid 4998] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 6405] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6405] mkdir("./file0", 0777 [pid 4998] close(3 [pid 6405] <... mkdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 6405] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] rmdir("./116" [pid 6407] <... munmap resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6407] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] mkdir("./117", 0777 [pid 6407] <... openat resumed>) = 4 [pid 4998] <... mkdir resumed>) = 0 [pid 6407] ioctl(4, LOOP_SET_FD, 3 [ 140.911596][ T6405] loop1: detected capacity change from 0 to 4096 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6409 [pid 4998] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6409 attached , child_tidptr=0x555556cac5d0) = 6410 [pid 6409] chdir("./117") = 0 [pid 6409] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6406] <... munmap resumed>) = 0 [pid 6409] <... prctl resumed>) = 0 [pid 6406] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6409] setpgid(0, 0 [pid 6406] <... openat resumed>) = 4 [pid 6409] <... setpgid resumed>) = 0 [pid 6406] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 6410 attached [pid 6409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6410] chdir("./117" [pid 6409] <... openat resumed>) = 3 [pid 6410] <... chdir resumed>) = 0 [pid 6409] write(3, "1000", 4 [pid 6410] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6409] <... write resumed>) = 4 [pid 6410] <... prctl resumed>) = 0 [pid 6409] close(3 [pid 6410] setpgid(0, 0 [pid 6409] <... close resumed>) = 0 [pid 6410] <... setpgid resumed>) = 0 [pid 6409] symlink("/dev/binderfs", "./binderfs" [pid 6410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6409] <... symlink resumed>) = 0 [pid 6410] <... openat resumed>) = 3 [pid 6409] memfd_create("syzkaller", 0 [pid 6410] write(3, "1000", 4 [pid 6409] <... memfd_create resumed>) = 3 [pid 6410] <... write resumed>) = 4 [pid 6409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6410] close(3 [pid 6409] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6410] <... close resumed>) = 0 [pid 6407] <... ioctl resumed>) = 0 [pid 6406] <... ioctl resumed>) = 0 [pid 6410] symlink("/dev/binderfs", "./binderfs" [pid 6407] close(3 [pid 6406] close(3 [pid 6410] <... symlink resumed>) = 0 [pid 6407] <... close resumed>) = 0 [pid 6406] <... close resumed>) = 0 [pid 6410] memfd_create("syzkaller", 0 [pid 6407] mkdir("./file0", 0777 [pid 6406] mkdir("./file0", 0777 [pid 6410] <... memfd_create resumed>) = 3 [pid 6410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6407] <... mkdir resumed>) = 0 [ 140.958908][ T6407] loop2: detected capacity change from 0 to 4096 [ 140.967998][ T6405] NILFS (loop1): invalid segment: Checksum error in segment payload [ 140.980071][ T6406] loop4: detected capacity change from 0 to 4096 [pid 6410] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6407] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6406] <... mkdir resumed>) = 0 [pid 6408] <... write resumed>) = 2097152 [pid 6408] munmap(0x7f46b9f9b000, 2097152 [pid 6406] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6408] <... munmap resumed>) = 0 [pid 6408] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6410] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6408] <... openat resumed>) = 4 [pid 6409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 141.011369][ T6405] NILFS (loop1): trying rollback from an earlier position [ 141.030640][ T6407] NILFS (loop2): invalid segment: Checksum error in segment payload [ 141.039623][ T6406] NILFS (loop4): invalid segment: Checksum error in segment payload [ 141.049745][ T6408] loop0: detected capacity change from 0 to 4096 [pid 6408] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6408] close(3) = 0 [pid 6409] <... write resumed>) = 2097152 [pid 6408] mkdir("./file0", 0777) = 0 [pid 6409] munmap(0x7f46b9f9b000, 2097152 [pid 6408] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6409] <... munmap resumed>) = 0 [pid 6409] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6410] <... write resumed>) = 2097152 [pid 6409] ioctl(4, LOOP_SET_FD, 3 [pid 6405] <... mount resumed>) = 0 [ 141.064859][ T6407] NILFS (loop2): trying rollback from an earlier position [ 141.072844][ T6406] NILFS (loop4): trying rollback from an earlier position [ 141.080575][ T6405] NILFS (loop1): recovery complete [ 141.094567][ T6408] NILFS (loop0): invalid segment: Checksum error in segment payload [ 141.102506][ T6409] loop3: detected capacity change from 0 to 4096 [pid 6410] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6410] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6410] ioctl(4, LOOP_SET_FD, 3 [pid 6405] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6409] <... ioctl resumed>) = 0 [pid 6409] close(3) = 0 [pid 6409] mkdir("./file0", 0777 [pid 6405] chdir("./file0" [pid 6409] <... mkdir resumed>) = 0 [pid 6409] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6406] <... mount resumed>) = 0 [pid 6405] <... chdir resumed>) = 0 [pid 6410] <... ioctl resumed>) = 0 [pid 6410] close(3) = 0 [pid 6410] mkdir("./file0", 0777) = 0 [ 141.106014][ T6411] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.120636][ T6410] loop5: detected capacity change from 0 to 4096 [ 141.128626][ T6406] NILFS (loop4): recovery complete [ 141.133910][ T6408] NILFS (loop0): trying rollback from an earlier position [ 141.141603][ T6407] NILFS (loop2): recovery complete [ 141.143290][ T6412] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6410] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6406] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6405] ioctl(4, LOOP_CLR_FD [pid 6407] <... mount resumed>) = 0 [pid 6406] <... openat resumed>) = 3 [pid 6405] <... ioctl resumed>) = 0 [pid 6407] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6407] chdir("./file0") = 0 [pid 6406] chdir("./file0" [pid 6405] close(4 [pid 6407] ioctl(4, LOOP_CLR_FD [pid 6406] <... chdir resumed>) = 0 [pid 6405] <... close resumed>) = 0 [pid 6407] <... ioctl resumed>) = 0 [pid 6406] ioctl(4, LOOP_CLR_FD [pid 6405] creat("./bus", 000 [pid 6407] close(4 [pid 6406] <... ioctl resumed>) = 0 [pid 6407] <... close resumed>) = 0 [pid 6406] close(4 [pid 6405] <... creat resumed>) = 4 [pid 6407] creat("./bus", 000 [pid 6406] <... close resumed>) = 0 [pid 6405] unlink("./bus" [pid 6406] creat("./bus", 000 [pid 6405] <... unlink resumed>) = 0 [ 141.161865][ T6409] NILFS (loop3): invalid segment: Checksum error in segment payload [ 141.167089][ T6410] NILFS (loop5): invalid segment: Checksum error in segment payload [ 141.178236][ T6410] NILFS (loop5): trying rollback from an earlier position [ 141.178271][ T6413] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6406] <... creat resumed>) = 4 [pid 6405] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6406] unlink("./bus") = 0 [pid 6406] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6405] <... pwritev2 resumed>) = 65007 [pid 6405] exit_group(0 [pid 6408] <... mount resumed>) = 0 [pid 6405] <... exit_group resumed>) = ? [pid 6408] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6406] <... pwritev2 resumed>) = 65007 [pid 6408] chdir("./file0" [pid 6406] exit_group(0 [pid 6408] <... chdir resumed>) = 0 [pid 6406] <... exit_group resumed>) = ? [pid 6408] ioctl(4, LOOP_CLR_FD) = 0 [pid 6408] close(4) = 0 [pid 6408] creat("./bus", 000 [pid 6405] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6405, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 141.224352][ T6408] NILFS (loop0): recovery complete [ 141.233614][ T6409] NILFS (loop3): trying rollback from an earlier position [ 141.245296][ T6410] NILFS (loop5): recovery complete [ 141.263490][ T6414] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6407] <... creat resumed>) = 4 [pid 4994] fstat(3, [pid 6407] unlink("./bus" [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6410] <... mount resumed>) = 0 [pid 6407] <... unlink resumed>) = 0 [pid 4994] getdents64(3, [pid 6410] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6408] <... creat resumed>) = 4 [pid 6407] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6406] +++ exited with 0 +++ [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6410] <... openat resumed>) = 3 [pid 6408] unlink("./bus" [pid 4994] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6410] chdir("./file0" [pid 6408] <... unlink resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6406, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6410] <... chdir resumed>) = 0 [pid 6408] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./116/binderfs", [pid 6410] ioctl(4, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6410] <... ioctl resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] unlink("./116/binderfs" [pid 6410] close(4 [pid 6407] <... pwritev2 resumed>) = 65007 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... unlink resumed>) = 0 [pid 6410] <... close resumed>) = 0 [pid 6408] <... pwritev2 resumed>) = 65007 [pid 6407] exit_group(0 [pid 4997] fstat(3, [pid 4994] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6410] creat("./bus", 000 [pid 6408] exit_group(0 [pid 6407] <... exit_group resumed>) = ? [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6410] <... creat resumed>) = 4 [pid 6408] <... exit_group resumed>) = ? [pid 4997] getdents64(3, [pid 6410] unlink("./bus" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6410] <... unlink resumed>) = 0 [pid 4997] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6410] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 141.297053][ T6415] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.328776][ T6409] NILFS (loop3): recovery complete [pid 4997] unlink("./117/binderfs") = 0 [pid 4997] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6407] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6407, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./114/binderfs", [pid 6408] +++ exited with 0 +++ [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./114/binderfs") = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6408, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6410] <... pwritev2 resumed>) = 65007 [pid 4995] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6410] exit_group(0 [pid 6409] <... mount resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6409] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] lstat("./116/binderfs", [pid 6409] <... openat resumed>) = 3 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6409] chdir("./file0" [pid 4993] unlink("./116/binderfs" [pid 6409] <... chdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 6409] ioctl(4, LOOP_CLR_FD [pid 4993] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6409] <... ioctl resumed>) = 0 [pid 6409] close(4) = 0 [pid 6409] creat("./bus", 000 [pid 6410] <... exit_group resumed>) = ? [pid 4993] <... umount2 resumed>) = 0 [pid 6410] +++ exited with 0 +++ [pid 4994] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6410, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6409] <... creat resumed>) = 4 [ 141.405192][ T6416] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(3, [pid 4997] <... umount2 resumed>) = 0 [pid 4994] lstat("./116/file0", [pid 4993] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6409] unlink("./bus" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6409] <... unlink resumed>) = 0 [pid 4998] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = 0 [pid 4994] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./116/file0", [pid 6409] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./117/file0", [pid 4995] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./117/binderfs", [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] unlink("./117/binderfs" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./114/file0", [pid 6409] <... pwritev2 resumed>) = 65007 [pid 4998] <... unlink resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6409] exit_group(0 [pid 4998] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(4, [pid 4993] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6409] <... exit_group resumed>) = ? [pid 4997] <... openat resumed>) = 4 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(4, [pid 4995] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 4993] <... openat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] fstat(4, [pid 4997] getdents64(4, [pid 4995] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(4, [pid 4997] getdents64(4, [pid 4995] fstat(4, [pid 4994] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 4997] close(4 [pid 4995] getdents64(4, [pid 4994] rmdir("./116/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(4 [pid 4997] rmdir("./117/file0" [pid 4995] getdents64(4, [pid 4994] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] rmdir("./116/file0" [pid 4997] getdents64(3, [pid 4995] close(4 [pid 4994] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(3, [pid 4997] close(3 [pid 4995] rmdir("./114/file0" [pid 4994] rmdir("./116" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(3 [pid 4997] rmdir("./117" [pid 4995] getdents64(3, [pid 4994] mkdir("./117", 0777 [pid 4993] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] rmdir("./116" [pid 4997] mkdir("./118", 0777 [pid 4995] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] mkdir("./117", 0777 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] rmdir("./114" [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... mkdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6409] +++ exited with 0 +++ [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] mkdir("./115", 0777 [pid 4994] close(3 [pid 4993] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6409, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] <... mkdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4993] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6417 [pid 4993] <... close resumed>) = 0 [pid 4998] lstat("./117/file0", [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6418 [pid 4996] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4998] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6419 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6418 attached [pid 4998] <... openat resumed>) = 4 [pid 4996] fstat(3, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6420 [pid 6418] chdir("./118" [pid 4998] fstat(4, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6418] <... chdir resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, ./strace-static-x86_64: Process 6417 attached [pid 6418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6418] <... prctl resumed>) = 0 [pid 6417] chdir("./117" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6420 attached [pid 6418] setpgid(0, 0 [pid 6417] <... chdir resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6420] chdir("./115" [pid 6418] <... setpgid resumed>) = 0 [pid 6417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] lstat("./117/binderfs", ./strace-static-x86_64: Process 6419 attached [pid 6420] <... chdir resumed>) = 0 [pid 6418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6417] <... prctl resumed>) = 0 [pid 4998] close(4 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6420] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6419] chdir("./117" [pid 6418] <... openat resumed>) = 3 [pid 6417] setpgid(0, 0 [pid 4998] <... close resumed>) = 0 [pid 4996] unlink("./117/binderfs" [pid 6420] <... prctl resumed>) = 0 [pid 6419] <... chdir resumed>) = 0 [pid 6418] write(3, "1000", 4 [pid 6417] <... setpgid resumed>) = 0 [pid 4998] rmdir("./117/file0" [pid 4996] <... unlink resumed>) = 0 [pid 6420] setpgid(0, 0 [pid 6419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6418] <... write resumed>) = 4 [pid 6417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... rmdir resumed>) = 0 [pid 4996] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6420] <... setpgid resumed>) = 0 [pid 6419] <... prctl resumed>) = 0 [pid 6418] close(3 [pid 6417] <... openat resumed>) = 3 [pid 4998] getdents64(3, [pid 6420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6419] setpgid(0, 0 [pid 6418] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6417] write(3, "1000", 4 [pid 6420] <... openat resumed>) = 3 [pid 6419] <... setpgid resumed>) = 0 [pid 6418] symlink("/dev/binderfs", "./binderfs" [pid 6417] <... write resumed>) = 4 [pid 4998] close(3 [pid 6420] write(3, "1000", 4 [pid 6418] <... symlink resumed>) = 0 [pid 6417] close(3 [pid 6420] <... write resumed>) = 4 [pid 6418] memfd_create("syzkaller", 0 [pid 6417] <... close resumed>) = 0 [pid 6420] close(3 [pid 6418] <... memfd_create resumed>) = 3 [pid 6417] symlink("/dev/binderfs", "./binderfs" [pid 6420] <... close resumed>) = 0 [pid 6418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6417] <... symlink resumed>) = 0 [pid 6420] symlink("/dev/binderfs", "./binderfs" [pid 6419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6418] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6417] memfd_create("syzkaller", 0 [pid 4998] <... close resumed>) = 0 [pid 6420] <... symlink resumed>) = 0 [pid 6419] <... openat resumed>) = 3 [pid 6417] <... memfd_create resumed>) = 3 [pid 4998] rmdir("./117" [pid 6420] memfd_create("syzkaller", 0 [pid 6419] write(3, "1000", 4 [pid 6418] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6420] <... memfd_create resumed>) = 3 [pid 6419] <... write resumed>) = 4 [pid 6417] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] mkdir("./118", 0777 [pid 4996] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6419] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6420] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6419] <... close resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] lstat("./117/file0", [pid 6419] symlink("/dev/binderfs", "./binderfs" [pid 6417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6419] <... symlink resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4996] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6419] memfd_create("syzkaller", 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6419] <... memfd_create resumed>) = 3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6420] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] close(3 [pid 4996] <... openat resumed>) = 4 [pid 6419] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... close resumed>) = 0 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] getdents64(4, [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6421 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./117/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] close(3) = 0 ./strace-static-x86_64: Process 6421 attached [pid 4996] rmdir("./117" [pid 6421] chdir("./118" [pid 4996] <... rmdir resumed>) = 0 [pid 6421] <... chdir resumed>) = 0 [pid 4996] mkdir("./118", 0777 [pid 6421] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... mkdir resumed>) = 0 [pid 6421] <... prctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6421] setpgid(0, 0 [pid 4996] <... openat resumed>) = 3 [pid 6421] <... setpgid resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6421] <... openat resumed>) = 3 [pid 4996] close(3 [pid 6421] write(3, "1000", 4 [pid 4996] <... close resumed>) = 0 [pid 6421] <... write resumed>) = 4 [pid 6421] close(3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6421] <... close resumed>) = 0 [pid 6421] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6422 [pid 6421] <... symlink resumed>) = 0 [pid 6421] memfd_create("syzkaller", 0) = 3 [pid 6421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6418] <... write resumed>) = 2097152 [pid 6420] <... write resumed>) = 2097152 [pid 6417] <... write resumed>) = 2097152 ./strace-static-x86_64: Process 6422 attached [pid 6418] munmap(0x7f46b9f9b000, 2097152 [pid 6422] chdir("./118") = 0 [pid 6422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6422] setpgid(0, 0) = 0 [pid 6422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6417] munmap(0x7f46b9f9b000, 2097152 [pid 6422] write(3, "1000", 4) = 4 [pid 6422] close(3) = 0 [pid 6422] symlink("/dev/binderfs", "./binderfs" [pid 6418] <... munmap resumed>) = 0 [pid 6417] <... munmap resumed>) = 0 [pid 6422] <... symlink resumed>) = 0 [pid 6420] munmap(0x7f46b9f9b000, 2097152 [pid 6418] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6422] memfd_create("syzkaller", 0 [pid 6421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6420] <... munmap resumed>) = 0 [pid 6418] <... openat resumed>) = 4 [pid 6422] <... memfd_create resumed>) = 3 [pid 6418] ioctl(4, LOOP_SET_FD, 3 [pid 6417] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6420] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6417] <... openat resumed>) = 4 [pid 6422] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6420] <... openat resumed>) = 4 [pid 6417] ioctl(4, LOOP_SET_FD, 3 [pid 6420] ioctl(4, LOOP_SET_FD, 3 [pid 6422] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6420] <... ioctl resumed>) = 0 [pid 6419] <... write resumed>) = 2097152 [pid 6419] munmap(0x7f46b9f9b000, 2097152 [pid 6418] <... ioctl resumed>) = 0 [pid 6418] close(3 [pid 6419] <... munmap resumed>) = 0 [pid 6419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6419] ioctl(4, LOOP_SET_FD, 3 [pid 6418] <... close resumed>) = 0 [pid 6418] mkdir("./file0", 0777) = 0 [pid 6418] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6417] <... ioctl resumed>) = 0 [pid 6417] close(3) = 0 [pid 6420] close(3 [pid 6417] mkdir("./file0", 0777 [pid 6420] <... close resumed>) = 0 [pid 6420] mkdir("./file0", 0777 [pid 6417] <... mkdir resumed>) = 0 [pid 6420] <... mkdir resumed>) = 0 [pid 6419] <... ioctl resumed>) = 0 [pid 6417] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6420] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6419] close(3 [pid 6421] <... write resumed>) = 2097152 [pid 6419] <... close resumed>) = 0 [pid 6421] munmap(0x7f46b9f9b000, 2097152 [pid 6419] mkdir("./file0", 0777) = 0 [ 141.740255][ T6418] loop4: detected capacity change from 0 to 4096 [ 141.749521][ T6417] loop1: detected capacity change from 0 to 4096 [ 141.756974][ T6420] loop2: detected capacity change from 0 to 4096 [ 141.769152][ T6419] loop0: detected capacity change from 0 to 4096 [pid 6419] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6421] <... munmap resumed>) = 0 [pid 6422] <... write resumed>) = 2097152 [pid 6421] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6422] munmap(0x7f46b9f9b000, 2097152 [pid 6421] <... openat resumed>) = 4 [ 141.799150][ T6418] NILFS (loop4): invalid segment: Checksum error in segment payload [ 141.809354][ T6417] NILFS (loop1): invalid segment: Checksum error in segment payload [ 141.809399][ T6419] NILFS (loop0): invalid segment: Checksum error in segment payload [ 141.820227][ T6418] NILFS (loop4): trying rollback from an earlier position [ 141.831489][ T6419] NILFS (loop0): trying rollback from an earlier position [ 141.833498][ T6420] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6422] <... munmap resumed>) = 0 [pid 6421] ioctl(4, LOOP_SET_FD, 3 [pid 6422] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6422] ioctl(4, LOOP_SET_FD, 3 [pid 6421] <... ioctl resumed>) = 0 [pid 6421] close(3) = 0 [pid 6421] mkdir("./file0", 0777 [pid 6422] <... ioctl resumed>) = 0 [pid 6421] <... mkdir resumed>) = 0 [pid 6422] close(3) = 0 [ 141.849670][ T6417] NILFS (loop1): trying rollback from an earlier position [ 141.851313][ T6419] NILFS (loop0): recovery complete [ 141.861740][ T6420] NILFS (loop2): trying rollback from an earlier position [ 141.862716][ T6421] loop5: detected capacity change from 0 to 4096 [ 141.878559][ T6422] loop3: detected capacity change from 0 to 4096 [ 141.890102][ T6417] NILFS (loop1): recovery complete [pid 6422] mkdir("./file0", 0777 [pid 6419] <... mount resumed>) = 0 [pid 6417] <... mount resumed>) = 0 [pid 6422] <... mkdir resumed>) = 0 [pid 6422] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6421] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6419] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6417] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6420] <... mount resumed>) = 0 [pid 6419] <... openat resumed>) = 3 [pid 6417] <... openat resumed>) = 3 [pid 6420] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6419] chdir("./file0" [pid 6417] chdir("./file0" [pid 6420] <... openat resumed>) = 3 [pid 6419] <... chdir resumed>) = 0 [pid 6417] <... chdir resumed>) = 0 [pid 6420] chdir("./file0" [pid 6419] ioctl(4, LOOP_CLR_FD [pid 6417] ioctl(4, LOOP_CLR_FD [pid 6420] <... chdir resumed>) = 0 [pid 6419] <... ioctl resumed>) = 0 [pid 6417] <... ioctl resumed>) = 0 [pid 6420] ioctl(4, LOOP_CLR_FD [pid 6419] close(4 [ 141.891923][ T6420] NILFS (loop2): recovery complete [ 141.903371][ T6418] NILFS (loop4): recovery complete [ 141.905400][ T6423] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.911320][ T6424] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.930755][ T6425] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6417] close(4 [pid 6420] <... ioctl resumed>) = 0 [pid 6419] <... close resumed>) = 0 [pid 6417] <... close resumed>) = 0 [pid 6420] close(4 [pid 6419] creat("./bus", 000 [pid 6417] creat("./bus", 000 [pid 6420] <... close resumed>) = 0 [pid 6420] creat("./bus", 000 [pid 6418] <... mount resumed>) = 0 [pid 6418] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6418] chdir("./file0") = 0 [pid 6418] ioctl(4, LOOP_CLR_FD [pid 6419] <... creat resumed>) = 4 [pid 6418] <... ioctl resumed>) = 0 [pid 6417] <... creat resumed>) = 4 [pid 6420] <... creat resumed>) = 4 [pid 6418] close(4) = 0 [pid 6420] unlink("./bus" [pid 6418] creat("./bus", 000 [pid 6419] unlink("./bus" [pid 6417] unlink("./bus" [pid 6419] <... unlink resumed>) = 0 [pid 6420] <... unlink resumed>) = 0 [pid 6417] <... unlink resumed>) = 0 [pid 6419] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6418] <... creat resumed>) = 4 [pid 6420] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6417] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6418] unlink("./bus") = 0 [ 141.945070][ T6422] NILFS (loop3): invalid segment: Checksum error in segment payload [ 141.955403][ T6421] NILFS (loop5): invalid segment: Checksum error in segment payload [ 141.963834][ T6421] NILFS (loop5): trying rollback from an earlier position [ 141.971124][ T6426] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 141.972487][ T6422] NILFS (loop3): trying rollback from an earlier position [ 142.016010][ T6421] NILFS (loop5): recovery complete [pid 6418] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6420] <... pwritev2 resumed>) = 65007 [pid 6418] exit_group(0) = ? [pid 6417] <... pwritev2 resumed>) = 65007 [pid 6420] exit_group(0 [pid 6419] <... pwritev2 resumed>) = 65007 [pid 6417] exit_group(0 [pid 6422] <... mount resumed>) = 0 [pid 6420] <... exit_group resumed>) = ? [pid 6419] exit_group(0 [pid 6417] <... exit_group resumed>) = ? [ 142.038340][ T6422] NILFS (loop3): recovery complete [ 142.048218][ T6427] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6422] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6420] +++ exited with 0 +++ [pid 6419] <... exit_group resumed>) = ? [pid 6422] <... openat resumed>) = 3 [pid 6417] +++ exited with 0 +++ [pid 6418] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6418, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6422] chdir("./file0" [pid 4997] getdents64(3, [pid 6422] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6420, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6417, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6422] ioctl(4, LOOP_CLR_FD [pid 4995] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6422] <... ioctl resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6422] close(4 [pid 4995] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6422] <... close resumed>) = 0 [pid 4997] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 6422] creat("./bus", 000 [pid 6421] <... mount resumed>) = 0 [pid 6419] +++ exited with 0 +++ [pid 4994] fstat(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] fstat(3, [pid 4997] lstat("./118/binderfs", [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6419, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] unlink("./118/binderfs" [pid 4994] getdents64(3, [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... unlink resumed>) = 0 [pid 4995] getdents64(3, [pid 4997] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... restart_syscall resumed>) = 0 [pid 6422] <... creat resumed>) = 4 [pid 6421] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6422] unlink("./bus" [pid 4995] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./115/binderfs", [pid 4994] lstat("./117/binderfs", [pid 4993] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./115/binderfs" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./117/binderfs" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... unlink resumed>) = 0 [pid 4997] lstat("./118/file0", [pid 4995] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6422] <... unlink resumed>) = 0 [pid 6421] <... openat resumed>) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6422] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6421] chdir("./file0" [pid 4997] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] fstat(3, [pid 4997] <... openat resumed>) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(3, [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] rmdir("./118/file0") = 0 [pid 4993] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [ 142.083749][ T6428] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] rmdir("./118") = 0 [pid 4997] mkdir("./119", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = 0 [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6429 ./strace-static-x86_64: Process 6429 attached [pid 6429] chdir("./119") = 0 [pid 6429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6429] setpgid(0, 0) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./117/binderfs", [pid 6421] <... chdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6421] ioctl(4, LOOP_CLR_FD [pid 4993] unlink("./117/binderfs") = 0 [pid 4993] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6421] <... ioctl resumed>) = 0 [pid 6421] close(4) = 0 [pid 6421] creat("./bus", 000) = 4 [pid 6421] unlink("./bus") = 0 [pid 6421] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... umount2 resumed>) = 0 [pid 6429] <... openat resumed>) = 3 [pid 6429] write(3, "1000", 4) = 4 [pid 6429] close(3) = 0 [pid 6429] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6422] <... pwritev2 resumed>) = 65007 [pid 4995] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 6429] memfd_create("syzkaller", 0 [pid 6422] exit_group(0) = ? [pid 6429] <... memfd_create resumed>) = 3 [pid 6429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6422] +++ exited with 0 +++ [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./115/file0", [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6422, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./117/file0", [pid 4995] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 4994] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] getdents64(4, [pid 4994] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] fstat(4, [pid 4996] fstat(3, [pid 4995] getdents64(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(4, [pid 4996] getdents64(3, [pid 4995] close(4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./115/file0" [pid 4994] getdents64(4, [pid 6421] <... pwritev2 resumed>) = 65007 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6421] exit_group(0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... rmdir resumed>) = 0 [pid 6421] <... exit_group resumed>) = ? [pid 4994] close(4 [pid 4996] lstat("./118/binderfs", [pid 4995] getdents64(3, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 4996] unlink("./118/binderfs" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./117/file0" [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4995] rmdir("./115" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./117/file0", [pid 4995] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] mkdir("./116", 0777 [pid 4994] <... close resumed>) = 0 [pid 4993] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... mkdir resumed>) = 0 [pid 4994] rmdir("./117" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] mkdir("./118", 0777 [pid 6429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... mkdir resumed>) = 0 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6421] +++ exited with 0 +++ [pid 4995] close(3 [pid 4993] getdents64(4, [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6421, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] close(4 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./117/file0") = 0 [pid 4998] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(3 [pid 4993] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6430 [pid 4994] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 4998] <... openat resumed>) = 3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... close resumed>) = 0 [pid 4998] fstat(3, [pid 4993] rmdir("./117" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6431 [pid 4993] mkdir("./118", 0777./strace-static-x86_64: Process 6430 attached [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... mkdir resumed>) = 0 [pid 6430] chdir("./116" [pid 4998] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6430] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6431 attached [pid 6430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] lstat("./118/binderfs", [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6431] chdir("./118" [pid 6430] <... prctl resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6431] <... chdir resumed>) = 0 [pid 6430] setpgid(0, 0 [pid 4998] unlink("./118/binderfs" [pid 4993] close(3 [pid 6431] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6430] <... setpgid resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6431] <... prctl resumed>) = 0 [pid 6430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6431] setpgid(0, 0 [pid 6430] <... openat resumed>) = 3 [pid 6431] <... setpgid resumed>) = 0 [pid 6430] write(3, "1000", 4 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6432 [pid 6431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6430] <... write resumed>) = 4 [pid 6431] <... openat resumed>) = 3 [pid 6430] close(3 [pid 6431] write(3, "1000", 4 [pid 6430] <... close resumed>) = 0 [pid 6431] <... write resumed>) = 4 [pid 6430] symlink("/dev/binderfs", "./binderfs" [pid 6431] close(3 [pid 6430] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6431] <... close resumed>) = 0 [pid 6430] memfd_create("syzkaller", 0 [pid 6431] symlink("/dev/binderfs", "./binderfs" [pid 6430] <... memfd_create resumed>) = 3 [pid 4996] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6432 attached [pid 6431] <... symlink resumed>) = 0 [pid 6430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6432] chdir("./118" [pid 6431] memfd_create("syzkaller", 0 [pid 6430] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6432] <... chdir resumed>) = 0 [pid 6431] <... memfd_create resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6432] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] lstat("./118/file0", [pid 6432] <... prctl resumed>) = 0 [pid 6431] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6432] setpgid(0, 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6432] <... setpgid resumed>) = 0 [pid 4996] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6432] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = 0 [pid 6432] write(3, "1000", 4 [pid 4996] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6432] <... write resumed>) = 4 [pid 4998] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6432] close(3) = 0 [pid 6432] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6432] memfd_create("syzkaller", 0) = 3 [pid 6432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... openat resumed>) = 4 [pid 4998] lstat("./118/file0", [pid 4996] fstat(4, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(4, [pid 4998] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(4 [pid 4998] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] rmdir("./118/file0" [pid 6429] <... write resumed>) = 2097152 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4998] close(4 [pid 4996] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./118/file0" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4998] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./118" [pid 4998] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4996] mkdir("./119", 0777 [pid 4998] rmdir("./118" [pid 4996] <... mkdir resumed>) = 0 [pid 6429] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6430] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6429] <... munmap resumed>) = 0 [pid 4998] mkdir("./119", 0777 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6432] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6429] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6429] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6429] ioctl(4, LOOP_SET_FD, 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 4998] close(3) = 0 [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6429] <... ioctl resumed>) = 0 [pid 6429] close(3) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6433 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6434 [pid 6429] mkdir("./file0", 0777./strace-static-x86_64: Process 6433 attached [pid 6430] <... write resumed>) = 2097152 [pid 6433] chdir("./119" [pid 6430] munmap(0x7f46b9f9b000, 2097152 [pid 6433] <... chdir resumed>) = 0 [pid 6433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6433] setpgid(0, 0) = 0 [pid 6433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6430] <... munmap resumed>) = 0 [pid 6429] <... mkdir resumed>) = 0 [pid 6429] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 6434 attached [pid 6434] chdir("./119") = 0 [pid 6434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6434] setpgid(0, 0) = 0 [ 142.403609][ T6429] loop4: detected capacity change from 0 to 4096 [pid 6434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6433] <... openat resumed>) = 3 [pid 6434] <... openat resumed>) = 3 [pid 6433] write(3, "1000", 4 [pid 6430] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6434] write(3, "1000", 4 [pid 6433] <... write resumed>) = 4 [pid 6430] <... openat resumed>) = 4 [pid 6434] <... write resumed>) = 4 [pid 6433] close(3 [pid 6430] ioctl(4, LOOP_SET_FD, 3 [pid 6434] close(3 [pid 6433] <... close resumed>) = 0 [pid 6434] <... close resumed>) = 0 [pid 6434] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6431] <... write resumed>) = 2097152 [pid 6434] memfd_create("syzkaller", 0) = 3 [pid 6433] symlink("/dev/binderfs", "./binderfs" [pid 6430] <... ioctl resumed>) = 0 [pid 6434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6433] <... symlink resumed>) = 0 [pid 6433] memfd_create("syzkaller", 0 [pid 6432] <... write resumed>) = 2097152 [pid 6430] close(3 [pid 6431] munmap(0x7f46b9f9b000, 2097152 [pid 6433] <... memfd_create resumed>) = 3 [pid 6432] munmap(0x7f46b9f9b000, 2097152 [pid 6430] <... close resumed>) = 0 [pid 6433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6432] <... munmap resumed>) = 0 [pid 6430] mkdir("./file0", 0777 [pid 6431] <... munmap resumed>) = 0 [pid 6431] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6431] ioctl(4, LOOP_SET_FD, 3 [pid 6432] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6430] <... mkdir resumed>) = 0 [pid 6432] <... openat resumed>) = 4 [pid 6430] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 142.456222][ T6429] NILFS (loop4): invalid segment: Checksum error in segment payload [ 142.467195][ T6430] loop2: detected capacity change from 0 to 4096 [ 142.478754][ T6429] NILFS (loop4): trying rollback from an earlier position [ 142.492586][ T6431] loop1: detected capacity change from 0 to 4096 [pid 6432] ioctl(4, LOOP_SET_FD, 3 [pid 6431] <... ioctl resumed>) = 0 [pid 6431] close(3) = 0 [pid 6431] mkdir("./file0", 0777 [pid 6434] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6431] <... mkdir resumed>) = 0 [pid 6431] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6432] <... ioctl resumed>) = 0 [pid 6433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6432] close(3) = 0 [pid 6432] mkdir("./file0", 0777) = 0 [ 142.502050][ T6432] loop0: detected capacity change from 0 to 4096 [ 142.514835][ T6430] NILFS (loop2): invalid segment: Checksum error in segment payload [ 142.526421][ T6429] NILFS (loop4): recovery complete [ 142.528043][ T6430] NILFS (loop2): trying rollback from an earlier position [pid 6432] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6433] <... write resumed>) = 2097152 [pid 6433] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6433] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6429] <... mount resumed>) = 0 [pid 6433] <... openat resumed>) = 4 [pid 6429] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6433] ioctl(4, LOOP_SET_FD, 3 [pid 6429] <... openat resumed>) = 3 [pid 6429] chdir("./file0") = 0 [pid 6429] ioctl(4, LOOP_CLR_FD) = 0 [pid 6429] close(4) = 0 [ 142.552803][ T6432] NILFS (loop0): invalid segment: Checksum error in segment payload [ 142.559767][ T6431] NILFS (loop1): invalid segment: Checksum error in segment payload [ 142.571790][ T6432] NILFS (loop0): trying rollback from an earlier position [ 142.572356][ T6435] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.586521][ T6430] NILFS (loop2): recovery complete [ 142.600614][ T6433] loop3: detected capacity change from 0 to 4096 [pid 6429] creat("./bus", 000 [pid 6433] <... ioctl resumed>) = 0 [pid 6433] close(3) = 0 [pid 6433] mkdir("./file0", 0777 [pid 6434] <... write resumed>) = 2097152 [pid 6434] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6434] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6434] ioctl(4, LOOP_SET_FD, 3 [pid 6433] <... mkdir resumed>) = 0 [pid 6433] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6434] <... ioctl resumed>) = 0 [pid 6434] close(3) = 0 [ 142.613780][ T6431] NILFS (loop1): trying rollback from an earlier position [ 142.626886][ T6432] NILFS (loop0): recovery complete [ 142.632242][ T6436] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.643325][ T6434] loop5: detected capacity change from 0 to 4096 [pid 6434] mkdir("./file0", 0777 [pid 6430] <... mount resumed>) = 0 [pid 6434] <... mkdir resumed>) = 0 [pid 6434] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6430] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6429] <... creat resumed>) = 4 [pid 6432] <... mount resumed>) = 0 [pid 6431] <... mount resumed>) = 0 [pid 6430] <... openat resumed>) = 3 [pid 6429] unlink("./bus" [pid 6432] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6431] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6430] chdir("./file0" [pid 6432] <... openat resumed>) = 3 [pid 6431] <... openat resumed>) = 3 [pid 6430] <... chdir resumed>) = 0 [pid 6432] chdir("./file0" [pid 6431] chdir("./file0" [pid 6430] ioctl(4, LOOP_CLR_FD [pid 6432] <... chdir resumed>) = 0 [pid 6431] <... chdir resumed>) = 0 [pid 6430] <... ioctl resumed>) = 0 [pid 6432] ioctl(4, LOOP_CLR_FD [pid 6431] ioctl(4, LOOP_CLR_FD [pid 6430] close(4 [pid 6432] <... ioctl resumed>) = 0 [pid 6431] <... ioctl resumed>) = 0 [pid 6430] <... close resumed>) = 0 [pid 6432] close(4 [pid 6431] close(4 [pid 6430] creat("./bus", 000 [pid 6432] <... close resumed>) = 0 [pid 6431] <... close resumed>) = 0 [pid 6432] creat("./bus", 000 [pid 6431] creat("./bus", 000 [pid 6429] <... unlink resumed>) = 0 [ 142.657241][ T6433] NILFS (loop3): invalid segment: Checksum error in segment payload [ 142.657633][ T6431] NILFS (loop1): recovery complete [ 142.669133][ T6433] NILFS (loop3): trying rollback from an earlier position [ 142.674941][ T6434] NILFS (loop5): invalid segment: Checksum error in segment payload [ 142.678451][ T6437] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.689863][ T6438] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.703786][ T6434] NILFS (loop5): trying rollback from an earlier position [pid 6429] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6430] <... creat resumed>) = 4 [pid 6430] unlink("./bus") = 0 [pid 6430] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6431] <... creat resumed>) = 4 [pid 6431] unlink("./bus" [pid 6432] <... creat resumed>) = 4 [pid 6431] <... unlink resumed>) = 0 [pid 6432] unlink("./bus" [pid 6431] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6432] <... unlink resumed>) = 0 [pid 6429] <... pwritev2 resumed>) = 65007 [ 142.728836][ T6433] NILFS (loop3): recovery complete [pid 6432] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6429] exit_group(0) = ? [pid 6431] <... pwritev2 resumed>) = 65007 [pid 6431] exit_group(0) = ? [ 142.756948][ T6434] NILFS (loop5): recovery complete [pid 6433] <... mount resumed>) = 0 [pid 6429] +++ exited with 0 +++ [pid 6431] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6429, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6431, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4997] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... restart_syscall resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(3, [pid 4994] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] fstat(3, [pid 4997] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 6433] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] lstat("./119/binderfs", [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6434] <... mount resumed>) = 0 [pid 6433] <... openat resumed>) = 3 [pid 6432] <... pwritev2 resumed>) = 65007 [pid 6430] <... pwritev2 resumed>) = 65007 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6434] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6433] chdir("./file0" [pid 6432] exit_group(0 [pid 6430] exit_group(0 [pid 4997] unlink("./119/binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6434] <... openat resumed>) = 3 [pid 6433] <... chdir resumed>) = 0 [pid 6432] <... exit_group resumed>) = ? [pid 6430] <... exit_group resumed>) = ? [pid 4997] <... unlink resumed>) = 0 [pid 4994] lstat("./118/binderfs", [pid 6434] chdir("./file0" [pid 6433] ioctl(4, LOOP_CLR_FD [pid 4997] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6434] <... chdir resumed>) = 0 [pid 6433] <... ioctl resumed>) = 0 [pid 4994] unlink("./118/binderfs" [pid 6434] ioctl(4, LOOP_CLR_FD [pid 6433] close(4 [pid 4994] <... unlink resumed>) = 0 [pid 6434] <... ioctl resumed>) = 0 [pid 4994] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6434] close(4 [pid 6433] <... close resumed>) = 0 [pid 6434] <... close resumed>) = 0 [pid 6433] creat("./bus", 000 [pid 6434] creat("./bus", 000 [pid 6430] +++ exited with 0 +++ [pid 6434] <... creat resumed>) = 4 [pid 6434] unlink("./bus" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6430, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6434] <... unlink resumed>) = 0 [pid 6432] +++ exited with 0 +++ [ 142.783525][ T6439] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 142.795855][ T6440] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6434] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6432, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6433] <... creat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6433] unlink("./bus" [pid 4995] fstat(3, [pid 4994] lstat("./118/file0", [pid 6434] <... pwritev2 resumed>) = 65007 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6434] exit_group(0 [pid 4995] getdents64(3, [pid 4994] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6434] <... exit_group resumed>) = ? [pid 6433] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6433] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./116/binderfs", [pid 4994] fstat(4, [pid 4993] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4995] unlink("./116/binderfs" [pid 4994] getdents64(4, [pid 4993] fstat(3, [pid 4995] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 4993] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] close(4 [pid 4993] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] rmdir("./118/file0" [pid 4993] lstat("./118/binderfs", [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] getdents64(3, [pid 4993] unlink("./118/binderfs" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4994] close(3 [pid 4993] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./118" [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./119", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] lstat("./119/file0", [pid 4994] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(3 [pid 6434] +++ exited with 0 +++ [pid 4997] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6434, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6441 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] close(4 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4998] fstat(3, [pid 4997] rmdir("./119/file0" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 6441 attached [pid 4998] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 6441] chdir("./119" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 6441] <... chdir resumed>) = 0 [pid 4998] lstat("./119/binderfs", [pid 4997] rmdir("./119" [pid 6441] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6441] <... prctl resumed>) = 0 [pid 4998] unlink("./119/binderfs" [pid 4997] mkdir("./120", 0777 [pid 6441] setpgid(0, 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 6441] <... setpgid resumed>) = 0 [pid 6433] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... openat resumed>) = 3 [pid 6441] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6441] write(3, "1000", 4 [pid 6433] exit_group(0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6441] <... write resumed>) = 4 [pid 4997] close(3 [pid 6441] close(3 [pid 4997] <... close resumed>) = 0 [pid 6441] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6441] symlink("/dev/binderfs", "./binderfs" [pid 6433] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = 0 [pid 4995] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 6441] <... symlink resumed>) = 0 [pid 4998] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6442 [pid 6441] memfd_create("syzkaller", 0) = 3 [pid 6441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6433] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6433, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- ./strace-static-x86_64: Process 6442 attached [pid 6442] chdir("./120" [pid 4998] lstat("./119/file0", [pid 4995] lstat("./116/file0", [pid 6442] <... chdir resumed>) = 0 [pid 4996] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6442] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6442] <... prctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6442] setpgid(0, 0 [pid 4996] <... openat resumed>) = 3 [pid 6442] <... setpgid resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 6442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6442] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 6442] write(3, "1000", 4 [pid 4998] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6442] <... write resumed>) = 4 [pid 4998] <... openat resumed>) = 4 [pid 4996] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6442] close(3 [pid 4998] fstat(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6442] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] lstat("./119/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6442] symlink("/dev/binderfs", "./binderfs" [pid 4998] getdents64(4, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6442] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] unlink("./119/binderfs" [pid 4995] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6442] memfd_create("syzkaller", 0 [pid 4998] getdents64(4, [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4993] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6442] <... memfd_create resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] close(4 [pid 4995] fstat(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6442] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./118/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] rmdir("./119/file0" [pid 4995] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, [pid 4998] <... rmdir resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4998] close(3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] rmdir("./118/file0" [pid 4998] <... close resumed>) = 0 [pid 4995] close(4 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./118" [pid 4998] rmdir("./119" [pid 4995] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./119", 0777 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] rmdir("./116/file0" [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] mkdir("./120", 0777 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... mkdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6443 [pid 4995] close(3 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] rmdir("./116" [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4995] mkdir("./117", 0777 [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 6443 attached [pid 6443] chdir("./119") = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6444 [pid 4995] <... openat resumed>) = 3 [pid 6443] setpgid(0, 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6443] <... setpgid resumed>) = 0 [pid 6443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6443] <... openat resumed>) = 3 [pid 4995] close(3 [pid 6443] write(3, "1000", 4 [pid 4996] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 6443] <... write resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6443] close(3 [pid 4996] lstat("./119/file0", [pid 6443] <... close resumed>) = 0 [pid 6442] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6445 attached ./strace-static-x86_64: Process 6444 attached [pid 6443] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6445 [pid 6444] chdir("./120" [pid 6443] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6444] <... chdir resumed>) = 0 [pid 6443] memfd_create("syzkaller", 0 [pid 6445] chdir("./117" [pid 4996] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6443] <... memfd_create resumed>) = 3 [pid 4996] <... openat resumed>) = 4 [pid 6445] <... chdir resumed>) = 0 [pid 6444] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] fstat(4, [pid 6445] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6444] <... prctl resumed>) = 0 [pid 6443] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6445] <... prctl resumed>) = 0 [pid 6444] setpgid(0, 0 [pid 6442] <... write resumed>) = 2097152 [pid 4996] getdents64(4, [pid 6445] setpgid(0, 0 [pid 6444] <... setpgid resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 6445] <... setpgid resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] close(4 [pid 6445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./119/file0" [pid 6445] <... openat resumed>) = 3 [pid 6444] <... openat resumed>) = 3 [pid 4996] <... rmdir resumed>) = 0 [pid 6445] write(3, "1000", 4 [pid 6444] write(3, "1000", 4 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 6445] <... write resumed>) = 4 [pid 6444] <... write resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./119" [pid 6445] close(3 [pid 6444] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 6445] <... close resumed>) = 0 [pid 6444] <... close resumed>) = 0 [pid 4996] mkdir("./120", 0777 [pid 6445] symlink("/dev/binderfs", "./binderfs" [pid 6444] symlink("/dev/binderfs", "./binderfs" [pid 6441] <... write resumed>) = 2097152 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6444] <... symlink resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6445] <... symlink resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6444] memfd_create("syzkaller", 0 [pid 4996] close(3 [pid 6445] memfd_create("syzkaller", 0 [pid 6444] <... memfd_create resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 6445] <... memfd_create resumed>) = 3 [pid 6444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6444] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6445] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6441] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6446 [pid 6441] <... munmap resumed>) = 0 [pid 6441] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 6446 attached ) = 4 [pid 6446] chdir("./120" [pid 6441] ioctl(4, LOOP_SET_FD, 3 [pid 6446] <... chdir resumed>) = 0 [pid 6446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6446] setpgid(0, 0) = 0 [pid 6446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6446] <... openat resumed>) = 3 [pid 6446] write(3, "1000", 4) = 4 [pid 6446] close(3 [pid 6442] munmap(0x7f46b9f9b000, 2097152 [pid 6446] <... close resumed>) = 0 [pid 6446] symlink("/dev/binderfs", "./binderfs" [pid 6442] <... munmap resumed>) = 0 [pid 6446] <... symlink resumed>) = 0 [pid 6446] memfd_create("syzkaller", 0 [pid 6442] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6446] <... memfd_create resumed>) = 3 [pid 6442] <... openat resumed>) = 4 [pid 6446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6442] ioctl(4, LOOP_SET_FD, 3 [pid 6446] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6442] <... ioctl resumed>) = 0 [pid 6444] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6442] close(3) = 0 [pid 6442] mkdir("./file0", 0777) = 0 [pid 6442] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6441] <... ioctl resumed>) = 0 [pid 6441] close(3) = 0 [pid 6441] mkdir("./file0", 0777) = 0 [ 143.123900][ T6441] loop1: detected capacity change from 0 to 4096 [ 143.156358][ T6442] loop4: detected capacity change from 0 to 4096 [pid 6441] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6445] <... write resumed>) = 2097152 [pid 6444] <... write resumed>) = 2097152 [pid 6443] <... write resumed>) = 2097152 [pid 6445] munmap(0x7f46b9f9b000, 2097152 [pid 6444] munmap(0x7f46b9f9b000, 2097152 [pid 6445] <... munmap resumed>) = 0 [pid 6444] <... munmap resumed>) = 0 [pid 6446] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6445] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6444] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6445] <... openat resumed>) = 4 [pid 6444] <... openat resumed>) = 4 [pid 6443] munmap(0x7f46b9f9b000, 2097152 [pid 6445] ioctl(4, LOOP_SET_FD, 3 [ 143.194550][ T6442] NILFS (loop4): invalid segment: Checksum error in segment payload [ 143.202600][ T6442] NILFS (loop4): trying rollback from an earlier position [ 143.225006][ T6441] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6444] ioctl(4, LOOP_SET_FD, 3 [pid 6443] <... munmap resumed>) = 0 [pid 6443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6443] ioctl(4, LOOP_SET_FD, 3 [pid 6445] <... ioctl resumed>) = 0 [pid 6444] <... ioctl resumed>) = 0 [pid 6443] <... ioctl resumed>) = 0 [pid 6443] close(3) = 0 [pid 6443] mkdir("./file0", 0777) = 0 [pid 6443] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6446] <... write resumed>) = 2097152 [pid 6446] munmap(0x7f46b9f9b000, 2097152 [pid 6445] close(3) = 0 [pid 6445] mkdir("./file0", 0777 [pid 6444] close(3 [pid 6445] <... mkdir resumed>) = 0 [pid 6444] <... close resumed>) = 0 [pid 6445] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6444] mkdir("./file0", 0777) = 0 [pid 6444] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6442] <... mount resumed>) = 0 [ 143.252411][ T6445] loop2: detected capacity change from 0 to 4096 [ 143.255159][ T6443] loop0: detected capacity change from 0 to 4096 [ 143.259005][ T6444] loop5: detected capacity change from 0 to 4096 [ 143.277191][ T6442] NILFS (loop4): recovery complete [ 143.282856][ T6441] NILFS (loop1): trying rollback from an earlier position [pid 6442] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6446] <... munmap resumed>) = 0 [pid 6442] <... openat resumed>) = 3 [pid 6446] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6442] chdir("./file0" [pid 6446] <... openat resumed>) = 4 [pid 6442] <... chdir resumed>) = 0 [pid 6446] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6442] ioctl(4, LOOP_CLR_FD) = 0 [pid 6442] close(4 [pid 6446] close(3) = 0 [ 143.307593][ T6445] NILFS (loop2): invalid segment: Checksum error in segment payload [ 143.307631][ T6443] NILFS (loop0): invalid segment: Checksum error in segment payload [ 143.325715][ T6446] loop3: detected capacity change from 0 to 4096 [ 143.327590][ T6447] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6446] mkdir("./file0", 0777 [pid 6442] <... close resumed>) = 0 [pid 6446] <... mkdir resumed>) = 0 [pid 6446] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6442] creat("./bus", 000) = 4 [pid 6442] unlink("./bus") = 0 [ 143.363563][ T6444] NILFS (loop5): invalid segment: Checksum error in segment payload [ 143.368542][ T6443] NILFS (loop0): trying rollback from an earlier position [ 143.373272][ T6445] NILFS (loop2): trying rollback from an earlier position [ 143.387609][ T6444] NILFS (loop5): trying rollback from an earlier position [ 143.393074][ T6441] NILFS (loop1): recovery complete [ 143.401532][ T6446] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6442] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6441] <... mount resumed>) = 0 [pid 6441] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6441] chdir("./file0") = 0 [pid 6441] ioctl(4, LOOP_CLR_FD) = 0 [pid 6441] close(4 [pid 6442] exit_group(0 [pid 6441] <... close resumed>) = 0 [ 143.411793][ T6446] NILFS (loop3): trying rollback from an earlier position [ 143.421633][ T6448] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.429887][ T6443] NILFS (loop0): recovery complete [ 143.452937][ T6444] NILFS (loop5): recovery complete [pid 6441] creat("./bus", 000 [pid 6442] <... exit_group resumed>) = ? [pid 6441] <... creat resumed>) = 4 [pid 6441] unlink("./bus") = 0 [pid 6441] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6442] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6442, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 6444] <... mount resumed>) = 0 [pid 4997] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [ 143.460636][ T6446] NILFS (loop3): recovery complete [ 143.466729][ T6445] NILFS (loop2): recovery complete [ 143.484306][ T6451] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 143.496783][ T6449] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./120/binderfs") = 0 [pid 4997] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6444] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6444] chdir("./file0") = 0 [pid 6444] ioctl(4, LOOP_CLR_FD) = 0 [pid 6444] close(4) = 0 [pid 6444] creat("./bus", 000 [pid 6441] <... pwritev2 resumed>) = 65007 [pid 6443] <... mount resumed>) = 0 [pid 6441] exit_group(0 [pid 6443] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6441] <... exit_group resumed>) = ? [pid 6443] <... openat resumed>) = 3 [pid 6443] chdir("./file0") = 0 [pid 6443] ioctl(4, LOOP_CLR_FD [pid 6446] <... mount resumed>) = 0 [pid 6446] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6443] <... ioctl resumed>) = 0 [pid 6443] close(4 [pid 6446] <... openat resumed>) = 3 [pid 6443] <... close resumed>) = 0 [pid 6443] creat("./bus", 000 [pid 6446] chdir("./file0") = 0 [pid 6446] ioctl(4, LOOP_CLR_FD) = 0 [pid 6446] close(4 [pid 6441] +++ exited with 0 +++ [pid 6446] <... close resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6441, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6446] creat("./bus", 000 [pid 6444] <... creat resumed>) = 4 [pid 4994] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6444] unlink("./bus" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6446] <... creat resumed>) = 4 [pid 6444] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6446] unlink("./bus" [ 143.507437][ T6450] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6444] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... openat resumed>) = 3 [pid 6445] <... mount resumed>) = 0 [pid 4994] fstat(3, [pid 6445] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6445] <... openat resumed>) = 3 [pid 4994] getdents64(3, [pid 6445] chdir("./file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6445] <... chdir resumed>) = 0 [pid 4994] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6445] ioctl(4, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6445] <... ioctl resumed>) = 0 [pid 4994] lstat("./119/binderfs", [pid 6445] close(4 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6446] <... unlink resumed>) = 0 [pid 6445] <... close resumed>) = 0 [pid 4994] unlink("./119/binderfs" [pid 6446] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6445] creat("./bus", 000 [pid 4994] <... unlink resumed>) = 0 [pid 6444] <... pwritev2 resumed>) = 65007 [pid 4994] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6444] exit_group(0) = ? [pid 6444] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6444, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./120/binderfs") = 0 [pid 4998] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 6446] <... pwritev2 resumed>) = 65007 [pid 6446] exit_group(0) = ? [pid 6443] <... creat resumed>) = 4 [pid 6443] unlink("./bus") = 0 [pid 6443] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 143.544717][ T6452] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6446] +++ exited with 0 +++ [pid 4997] lstat("./120/file0", [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6446, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] unlink("./120/binderfs" [pid 4997] <... openat resumed>) = 4 [pid 4996] <... unlink resumed>) = 0 [pid 6445] <... creat resumed>) = 4 [pid 4997] fstat(4, [pid 4996] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6445] unlink("./bus" [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 6445] <... unlink resumed>) = 0 [pid 6445] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4994] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./119/file0", [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 6443] <... pwritev2 resumed>) = 65007 [pid 4997] <... close resumed>) = 0 [pid 6443] exit_group(0) = ? [pid 4997] rmdir("./120/file0" [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(3, [pid 4994] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] close(3 [pid 4994] getdents64(4, [pid 4997] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 6443] +++ exited with 0 +++ [pid 4997] rmdir("./120" [pid 4994] <... close resumed>) = 0 [pid 6445] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./119/file0" [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6443, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6445] exit_group(0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6445] <... exit_group resumed>) = ? [pid 4998] lstat("./120/file0", [pid 4994] getdents64(3, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] mkdir("./121", 0777 [pid 4998] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] close(3 [pid 4998] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4993] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 4 [pid 4994] rmdir("./119" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] fstat(4, [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] mkdir("./120", 0777 [pid 4993] <... openat resumed>) = 3 [pid 4998] getdents64(4, [pid 4997] <... openat resumed>) = 3 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] fstat(3, [pid 6445] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4994] <... openat resumed>) = 3 [pid 4993] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6445, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] close(4 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... restart_syscall resumed>) = 0 [pid 4994] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] rmdir("./120/file0" [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... close resumed>) = 0 [pid 4993] lstat("./119/binderfs", [pid 4998] <... rmdir resumed>) = 0 [pid 4997] close(3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(3, [pid 4997] <... close resumed>) = 0 [pid 4995] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./119/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6453 [pid 4993] <... unlink resumed>) = 0 [pid 4998] close(3 [pid 4995] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6454 attached ./strace-static-x86_64: Process 6453 attached [pid 4998] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] rmdir("./120" [pid 4995] fstat(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6454 [pid 4996] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] mkdir("./121", 0777 [pid 4995] getdents64(3, [pid 6454] chdir("./121" [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./120/file0", [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] lstat("./117/binderfs", [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6454] <... chdir resumed>) = 0 [pid 4998] close(3 [pid 4995] unlink("./117/binderfs" [pid 4998] <... close resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6454] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6455 [pid 6454] <... prctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6455 attached [pid 6455] chdir("./121") = 0 [pid 4996] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6454] setpgid(0, 0) = 0 [pid 4996] <... openat resumed>) = 4 [pid 6455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] fstat(4, [pid 6455] <... prctl resumed>) = 0 [pid 6455] setpgid(0, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6455] <... setpgid resumed>) = 0 [pid 6455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6454] <... openat resumed>) = 3 [pid 4996] getdents64(4, [pid 6453] chdir("./120" [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 6455] <... openat resumed>) = 3 [pid 6455] write(3, "1000", 4) = 4 [pid 6455] close(3) = 0 [pid 6455] symlink("/dev/binderfs", "./binderfs" [pid 6454] write(3, "1000", 4 [pid 6453] <... chdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6455] <... symlink resumed>) = 0 [pid 6455] memfd_create("syzkaller", 0 [pid 6454] <... write resumed>) = 4 [pid 6453] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] getdents64(4, [pid 6455] <... memfd_create resumed>) = 3 [pid 6455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6454] close(3 [pid 6453] <... prctl resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6454] <... close resumed>) = 0 [pid 6453] setpgid(0, 0 [pid 6454] symlink("/dev/binderfs", "./binderfs" [pid 4996] close(4 [pid 4993] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6454] <... symlink resumed>) = 0 [pid 6453] <... setpgid resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 6454] memfd_create("syzkaller", 0 [pid 6453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] rmdir("./120/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6454] <... memfd_create resumed>) = 3 [pid 6453] <... openat resumed>) = 3 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6453] write(3, "1000", 4 [pid 4996] getdents64(3, [pid 4993] close(4) = 0 [pid 4993] rmdir("./119/file0" [pid 6454] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6453] <... write resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./119") = 0 [pid 4995] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] mkdir("./120", 0777 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./117/file0", [pid 4993] <... mkdir resumed>) = 0 [pid 6453] close(3 [pid 4996] close(3 [pid 6453] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6453] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... close resumed>) = 0 [pid 4995] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 6455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6453] <... symlink resumed>) = 0 [pid 4996] rmdir("./120" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6453] memfd_create("syzkaller", 0 [pid 4995] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4993] close(3 [pid 6453] <... memfd_create resumed>) = 3 [pid 4996] mkdir("./121", 0777 [pid 4995] fstat(4, [pid 4993] <... close resumed>) = 0 [pid 6453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6453] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6456 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./117/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./117") = 0 [pid 4995] mkdir("./118", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... close resumed>) = 0 ./strace-static-x86_64: Process 6456 attached [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6456] chdir("./120" [pid 4996] <... openat resumed>) = 3 [pid 6456] <... chdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6457 [pid 6456] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6456] <... prctl resumed>) = 0 [pid 4996] close(3 [pid 6456] setpgid(0, 0 [pid 4996] <... close resumed>) = 0 [pid 6456] <... setpgid resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6456] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 6458 attached [pid 6456] close(3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6458 [pid 6456] <... close resumed>) = 0 [pid 6458] chdir("./121" [pid 6456] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 6457 attached [pid 6458] <... chdir resumed>) = 0 [pid 6456] <... symlink resumed>) = 0 [pid 6458] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6457] chdir("./118" [pid 6456] memfd_create("syzkaller", 0 [pid 6458] <... prctl resumed>) = 0 [pid 6457] <... chdir resumed>) = 0 [pid 6456] <... memfd_create resumed>) = 3 [pid 6458] setpgid(0, 0 [pid 6457] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6458] <... setpgid resumed>) = 0 [pid 6457] <... prctl resumed>) = 0 [pid 6456] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6457] setpgid(0, 0 [pid 6454] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6457] <... setpgid resumed>) = 0 [pid 6458] <... openat resumed>) = 3 [pid 6457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6458] write(3, "1000", 4 [pid 6457] <... openat resumed>) = 3 [pid 6458] <... write resumed>) = 4 [pid 6457] write(3, "1000", 4 [pid 6458] close(3 [pid 6457] <... write resumed>) = 4 [pid 6458] <... close resumed>) = 0 [pid 6457] close(3) = 0 [pid 6457] symlink("/dev/binderfs", "./binderfs" [pid 6458] symlink("/dev/binderfs", "./binderfs" [pid 6457] <... symlink resumed>) = 0 [pid 6458] <... symlink resumed>) = 0 [pid 6457] memfd_create("syzkaller", 0 [pid 6458] memfd_create("syzkaller", 0 [pid 6457] <... memfd_create resumed>) = 3 [pid 6458] <... memfd_create resumed>) = 3 [pid 6457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6458] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6457] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6458] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6455] <... write resumed>) = 2097152 [pid 6456] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6455] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6455] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6458] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6455] <... openat resumed>) = 4 [pid 6455] ioctl(4, LOOP_SET_FD, 3 [pid 6454] <... write resumed>) = 2097152 [pid 6453] <... write resumed>) = 2097152 [pid 6454] munmap(0x7f46b9f9b000, 2097152 [pid 6453] munmap(0x7f46b9f9b000, 2097152 [pid 6454] <... munmap resumed>) = 0 [pid 6453] <... munmap resumed>) = 0 [pid 6454] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6453] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6454] ioctl(4, LOOP_SET_FD, 3 [pid 6453] <... openat resumed>) = 4 [pid 6453] ioctl(4, LOOP_SET_FD, 3 [pid 6455] <... ioctl resumed>) = 0 [pid 6455] close(3) = 0 [pid 6455] mkdir("./file0", 0777) = 0 [pid 6455] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6458] <... write resumed>) = 2097152 [pid 6454] <... ioctl resumed>) = 0 [pid 6453] <... ioctl resumed>) = 0 [pid 6458] munmap(0x7f46b9f9b000, 2097152 [pid 6454] close(3 [pid 6453] close(3 [pid 6454] <... close resumed>) = 0 [ 143.850224][ T6455] loop5: detected capacity change from 0 to 4096 [ 143.880974][ T6454] loop4: detected capacity change from 0 to 4096 [ 143.889136][ T6453] loop1: detected capacity change from 0 to 4096 [pid 6453] <... close resumed>) = 0 [pid 6454] mkdir("./file0", 0777 [pid 6453] mkdir("./file0", 0777 [pid 6454] <... mkdir resumed>) = 0 [pid 6453] <... mkdir resumed>) = 0 [pid 6454] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6453] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6458] <... munmap resumed>) = 0 [pid 6457] <... write resumed>) = 2097152 [pid 6456] <... write resumed>) = 2097152 [pid 6458] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6456] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6458] <... openat resumed>) = 4 [pid 6456] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6456] ioctl(4, LOOP_SET_FD, 3 [pid 6458] ioctl(4, LOOP_SET_FD, 3 [pid 6456] <... ioctl resumed>) = 0 [pid 6457] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6457] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 143.947904][ T6454] NILFS (loop4): invalid segment: Checksum error in segment payload [ 143.955690][ T6455] NILFS (loop5): invalid segment: Checksum error in segment payload [ 143.959473][ T6453] NILFS (loop1): invalid segment: Checksum error in segment payload [ 143.975911][ T6456] loop0: detected capacity change from 0 to 4096 [ 143.976477][ T6458] loop3: detected capacity change from 0 to 4096 [pid 6457] ioctl(4, LOOP_SET_FD, 3 [pid 6456] close(3) = 0 [pid 6456] mkdir("./file0", 0777) = 0 [pid 6456] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6457] <... ioctl resumed>) = 0 [pid 6457] close(3 [pid 6458] <... ioctl resumed>) = 0 [pid 6458] close(3 [pid 6457] <... close resumed>) = 0 [pid 6458] <... close resumed>) = 0 [ 143.992772][ T6457] loop2: detected capacity change from 0 to 4096 [ 144.003924][ T6455] NILFS (loop5): trying rollback from an earlier position [ 144.013165][ T6454] NILFS (loop4): trying rollback from an earlier position [ 144.032424][ T6456] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6457] mkdir("./file0", 0777 [pid 6458] mkdir("./file0", 0777 [pid 6457] <... mkdir resumed>) = 0 [pid 6457] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6458] <... mkdir resumed>) = 0 [ 144.041561][ T6453] NILFS (loop1): trying rollback from an earlier position [ 144.063127][ T6458] NILFS (loop3): invalid segment: Checksum error in segment payload [ 144.063154][ T6457] NILFS (loop2): invalid segment: Checksum error in segment payload [ 144.082374][ T6454] NILFS (loop4): recovery complete [ 144.089368][ T6455] NILFS (loop5): recovery complete [pid 6458] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6454] <... mount resumed>) = 0 [pid 6454] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6455] <... mount resumed>) = 0 [pid 6454] <... openat resumed>) = 3 [pid 6455] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6455] chdir("./file0") = 0 [pid 6455] ioctl(4, LOOP_CLR_FD) = 0 [pid 6455] close(4 [pid 6454] chdir("./file0" [pid 6455] <... close resumed>) = 0 [pid 6455] creat("./bus", 000 [pid 6454] <... chdir resumed>) = 0 [pid 6454] ioctl(4, LOOP_CLR_FD) = 0 [pid 6454] close(4) = 0 [ 144.091691][ T6458] NILFS (loop3): trying rollback from an earlier position [ 144.095273][ T6456] NILFS (loop0): trying rollback from an earlier position [ 144.103729][ T6453] NILFS (loop1): recovery complete [ 144.110817][ T6457] NILFS (loop2): trying rollback from an earlier position [ 144.116896][ T6459] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.128841][ T6460] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6454] creat("./bus", 000 [pid 6455] <... creat resumed>) = 4 [pid 6455] unlink("./bus") = 0 [pid 6455] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6456] <... mount resumed>) = 0 [pid 6456] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6455] <... pwritev2 resumed>) = 65007 [pid 6455] exit_group(0) = ? [ 144.170980][ T6456] NILFS (loop0): recovery complete [ 144.190632][ T6457] NILFS (loop2): recovery complete [ 144.190809][ T6461] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.207425][ T6462] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6456] <... openat resumed>) = 3 [pid 6454] <... creat resumed>) = 4 [pid 6453] <... mount resumed>) = 0 [pid 6456] chdir("./file0" [pid 6454] unlink("./bus" [pid 6456] <... chdir resumed>) = 0 [pid 6456] ioctl(4, LOOP_CLR_FD) = 0 [pid 6456] close(4 [pid 6453] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6456] <... close resumed>) = 0 [pid 6454] <... unlink resumed>) = 0 [pid 6453] <... openat resumed>) = 3 [pid 6456] creat("./bus", 000 [ 144.224701][ T6458] NILFS (loop3): recovery complete [pid 6454] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6453] chdir("./file0" [pid 6458] <... mount resumed>) = 0 [pid 6457] <... mount resumed>) = 0 [pid 6456] <... creat resumed>) = 4 [pid 6455] +++ exited with 0 +++ [pid 6453] <... chdir resumed>) = 0 [pid 6458] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6457] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6456] unlink("./bus" [pid 6453] ioctl(4, LOOP_CLR_FD [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6455, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 6458] <... openat resumed>) = 3 [pid 6457] <... openat resumed>) = 3 [pid 6456] <... unlink resumed>) = 0 [pid 6454] <... pwritev2 resumed>) = 65007 [pid 6453] <... ioctl resumed>) = 0 [pid 6458] chdir("./file0" [pid 6457] chdir("./file0" [pid 6456] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6453] close(4 [pid 6458] <... chdir resumed>) = 0 [pid 6457] <... chdir resumed>) = 0 [pid 6453] <... close resumed>) = 0 [pid 6458] ioctl(4, LOOP_CLR_FD [pid 6457] ioctl(4, LOOP_CLR_FD [pid 6453] creat("./bus", 000 [pid 6458] <... ioctl resumed>) = 0 [pid 6457] <... ioctl resumed>) = 0 [pid 6458] close(4 [pid 6457] close(4 [pid 4998] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6458] <... close resumed>) = 0 [pid 6457] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6458] creat("./bus", 000 [pid 6457] creat("./bus", 000 [pid 4998] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./121/binderfs") = 0 [pid 4998] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6454] exit_group(0) = ? [pid 6458] <... creat resumed>) = 4 [pid 6457] <... creat resumed>) = 4 [pid 6453] <... creat resumed>) = 4 [pid 6458] unlink("./bus" [pid 6457] unlink("./bus" [pid 6453] unlink("./bus" [pid 6458] <... unlink resumed>) = 0 [pid 6457] <... unlink resumed>) = 0 [pid 6453] <... unlink resumed>) = 0 [ 144.245611][ T6464] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.246679][ T6463] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6458] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6457] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6453] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6456] <... pwritev2 resumed>) = 65007 [pid 6454] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6454, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6456] exit_group(0 [pid 6458] <... pwritev2 resumed>) = 65007 [pid 6458] exit_group(0 [pid 6456] <... exit_group resumed>) = ? [pid 6458] <... exit_group resumed>) = ? [pid 4997] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./121/binderfs") = 0 [pid 4997] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6453] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = 0 [pid 6453] exit_group(0) = ? [pid 6456] +++ exited with 0 +++ [pid 6457] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6456, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6457] exit_group(0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6457] <... exit_group resumed>) = ? [pid 4998] lstat("./121/file0", [pid 4993] fstat(3, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./120/binderfs", [pid 6458] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./120/binderfs") = 0 [pid 4998] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6453] +++ exited with 0 +++ [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6458, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6453, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6457] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] fstat(3, [pid 4994] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(3, [pid 4996] getdents64(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] getdents64(3, [pid 4996] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./121/binderfs", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] lstat("./120/binderfs", [pid 4996] unlink("./121/binderfs" [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4994] unlink("./120/binderfs" [pid 4996] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4994] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 4997] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./121/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6457, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4995] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] close(4 [pid 4995] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... close resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] rmdir("./121/file0" [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./118/binderfs") = 0 [pid 4995] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4993] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] rmdir("./121" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] lstat("./121/file0", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./120/file0", [pid 4998] <... close resumed>) = 0 [pid 4997] mkdir("./122", 0777 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./120/file0", [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] rmdir("./121" [pid 4997] <... mkdir resumed>) = 0 [pid 4996] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... rmdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] mkdir("./122", 0777 [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... mkdir resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 4 [pid 4995] lstat("./118/file0", [pid 4994] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 4 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] fstat(4, [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] fstat(4, [pid 4998] <... openat resumed>) = 3 [pid 4997] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 6465 attached [pid 4998] close(3 [pid 4996] getdents64(4, [pid 4995] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 4998] <... close resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6465 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4996] <... close resumed>) = 0 [pid 4994] close(4 [pid 4993] <... close resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6466 [pid 4996] rmdir("./121/file0" [pid 4994] <... close resumed>) = 0 [pid 4993] rmdir("./120/file0" [pid 6465] chdir("./122" [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4994] rmdir("./120/file0" [pid 4993] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4994] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 6465] <... chdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] fstat(4, [pid 4994] close(3 [pid 4993] <... close resumed>) = 0 [pid 6465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] rmdir("./121" [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] rmdir("./120"./strace-static-x86_64: Process 6466 attached [pid 6465] <... prctl resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] rmdir("./120" [pid 4993] <... rmdir resumed>) = 0 [pid 6466] chdir("./122" [pid 4996] mkdir("./122", 0777 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] mkdir("./121", 0777 [pid 6466] <... chdir resumed>) = 0 [pid 6465] setpgid(0, 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4994] mkdir("./121", 0777 [pid 4993] <... mkdir resumed>) = 0 [pid 6466] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6465] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6466] <... prctl resumed>) = 0 [pid 6465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... openat resumed>) = 3 [pid 4995] getdents64(4, [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... openat resumed>) = 3 [pid 6466] setpgid(0, 0 [pid 6465] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6466] <... setpgid resumed>) = 0 [pid 6465] write(3, "1000", 4 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(4 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6465] <... write resumed>) = 4 [pid 4996] close(3 [pid 4995] <... close resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 6466] <... openat resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 4994] close(3 [pid 4993] <... close resumed>) = 0 [pid 6466] write(3, "1000", 4 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6466] <... write resumed>) = 4 [pid 6465] close(3 [pid 4995] rmdir("./118/file0" [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6466] close(3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6467 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6468 [pid 6466] <... close resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6469 [pid 6466] symlink("/dev/binderfs", "./binderfs" [pid 6465] <... close resumed>) = 0 [pid 6466] <... symlink resumed>) = 0 [pid 6465] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... rmdir resumed>) = 0 [pid 6466] memfd_create("syzkaller", 0 [pid 6465] <... symlink resumed>) = 0 [pid 4995] getdents64(3, ./strace-static-x86_64: Process 6469 attached [pid 6466] <... memfd_create resumed>) = 3 [pid 6465] memfd_create("syzkaller", 0./strace-static-x86_64: Process 6468 attached [pid 6469] chdir("./121" [pid 6466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6465] <... memfd_create resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 6467 attached [pid 6469] <... chdir resumed>) = 0 [pid 6468] chdir("./121" [pid 6466] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] close(3 [pid 6469] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6468] <... chdir resumed>) = 0 [pid 6467] chdir("./122" [pid 6466] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6465] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... close resumed>) = 0 [pid 6469] <... prctl resumed>) = 0 [pid 6468] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6467] <... chdir resumed>) = 0 [pid 6469] setpgid(0, 0 [pid 6467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6469] <... setpgid resumed>) = 0 [pid 6467] <... prctl resumed>) = 0 [pid 6469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6467] setpgid(0, 0 [pid 6469] <... openat resumed>) = 3 [pid 6467] <... setpgid resumed>) = 0 [pid 6469] write(3, "1000", 4 [pid 6467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6469] <... write resumed>) = 4 [pid 6467] <... openat resumed>) = 3 [pid 6469] close(3 [pid 6468] <... prctl resumed>) = 0 [pid 6467] write(3, "1000", 4 [pid 4995] rmdir("./118" [pid 6469] <... close resumed>) = 0 [pid 6468] setpgid(0, 0 [pid 6467] <... write resumed>) = 4 [pid 6469] symlink("/dev/binderfs", "./binderfs" [pid 6468] <... setpgid resumed>) = 0 [pid 6467] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 6469] <... symlink resumed>) = 0 [pid 6468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6467] <... close resumed>) = 0 [pid 4995] mkdir("./119", 0777 [pid 6469] memfd_create("syzkaller", 0 [pid 6468] <... openat resumed>) = 3 [pid 6467] symlink("/dev/binderfs", "./binderfs" [pid 6469] <... memfd_create resumed>) = 3 [pid 6468] write(3, "1000", 4 [pid 6467] <... symlink resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6468] <... write resumed>) = 4 [pid 6467] memfd_create("syzkaller", 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6469] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6468] close(3 [pid 6467] <... memfd_create resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 6468] <... close resumed>) = 0 [pid 6467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6468] symlink("/dev/binderfs", "./binderfs" [pid 6467] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6468] <... symlink resumed>) = 0 [pid 4995] close(3 [pid 6468] memfd_create("syzkaller", 0 [pid 4995] <... close resumed>) = 0 [pid 6468] <... memfd_create resumed>) = 3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6470 [pid 6469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 6470 attached [pid 6470] chdir("./119") = 0 [pid 6470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6470] setpgid(0, 0 [pid 6468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6470] <... setpgid resumed>) = 0 [pid 6470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6470] write(3, "1000", 4) = 4 [pid 6470] close(3) = 0 [pid 6470] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6470] memfd_create("syzkaller", 0) = 3 [pid 6470] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6469] <... write resumed>) = 2097152 [pid 6466] <... write resumed>) = 2097152 [pid 6467] <... write resumed>) = 2097152 [pid 6469] munmap(0x7f46b9f9b000, 2097152 [pid 6467] munmap(0x7f46b9f9b000, 2097152 [pid 6470] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6467] <... munmap resumed>) = 0 [pid 6466] munmap(0x7f46b9f9b000, 2097152 [pid 6465] <... write resumed>) = 2097152 [pid 6469] <... munmap resumed>) = 0 [pid 6469] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6467] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6466] <... munmap resumed>) = 0 [pid 6465] munmap(0x7f46b9f9b000, 2097152 [pid 6469] <... openat resumed>) = 4 [pid 6467] <... openat resumed>) = 4 [pid 6466] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6469] ioctl(4, LOOP_SET_FD, 3 [pid 6467] ioctl(4, LOOP_SET_FD, 3 [pid 6466] <... openat resumed>) = 4 [pid 6465] <... munmap resumed>) = 0 [pid 6470] <... write resumed>) = 2097152 [pid 6469] <... ioctl resumed>) = 0 [pid 6468] <... write resumed>) = 2097152 [pid 6466] ioctl(4, LOOP_SET_FD, 3 [pid 6465] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6470] munmap(0x7f46b9f9b000, 2097152 [pid 6469] close(3 [pid 6468] munmap(0x7f46b9f9b000, 2097152 [pid 6467] <... ioctl resumed>) = 0 [pid 6467] close(3) = 0 [pid 6467] mkdir("./file0", 0777 [pid 6470] <... munmap resumed>) = 0 [pid 6469] <... close resumed>) = 0 [pid 6468] <... munmap resumed>) = 0 [pid 6467] <... mkdir resumed>) = 0 [pid 6466] <... ioctl resumed>) = 0 [pid 6465] <... openat resumed>) = 4 [pid 6470] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6469] mkdir("./file0", 0777 [pid 6466] close(3 [pid 6465] ioctl(4, LOOP_SET_FD, 3 [pid 6470] <... openat resumed>) = 4 [pid 6468] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6467] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6468] <... openat resumed>) = 4 [pid 6468] ioctl(4, LOOP_SET_FD, 3 [pid 6470] ioctl(4, LOOP_SET_FD, 3 [pid 6469] <... mkdir resumed>) = 0 [pid 6466] <... close resumed>) = 0 [ 144.693716][ T6469] loop1: detected capacity change from 0 to 4096 [ 144.701149][ T6467] loop3: detected capacity change from 0 to 4096 [ 144.705168][ T6466] loop5: detected capacity change from 0 to 4096 [ 144.716815][ T6465] loop4: detected capacity change from 0 to 4096 [ 144.723444][ T6468] loop0: detected capacity change from 0 to 4096 [ 144.726694][ T6470] loop2: detected capacity change from 0 to 4096 [pid 6465] <... ioctl resumed>) = 0 [pid 6469] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6468] <... ioctl resumed>) = 0 [pid 6466] mkdir("./file0", 0777 [pid 6465] close(3 [pid 6470] <... ioctl resumed>) = 0 [pid 6466] <... mkdir resumed>) = 0 [pid 6465] <... close resumed>) = 0 [pid 6466] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6465] mkdir("./file0", 0777 [pid 6470] close(3 [pid 6468] close(3 [pid 6465] <... mkdir resumed>) = 0 [pid 6470] <... close resumed>) = 0 [pid 6468] <... close resumed>) = 0 [pid 6470] mkdir("./file0", 0777 [pid 6468] mkdir("./file0", 0777 [pid 6465] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6470] <... mkdir resumed>) = 0 [pid 6468] <... mkdir resumed>) = 0 [ 144.736606][ T6467] NILFS (loop3): invalid segment: Checksum error in segment payload [ 144.745586][ T6467] NILFS (loop3): trying rollback from an earlier position [ 144.762956][ T6469] NILFS (loop1): invalid segment: Checksum error in segment payload [ 144.766626][ T6467] NILFS (loop3): recovery complete [ 144.771824][ T6466] NILFS (loop5): invalid segment: Checksum error in segment payload [ 144.784878][ T6469] NILFS (loop1): trying rollback from an earlier position [pid 6470] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6468] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6467] <... mount resumed>) = 0 [pid 6467] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6467] chdir("./file0") = 0 [pid 6467] ioctl(4, LOOP_CLR_FD) = 0 [ 144.786912][ T6470] NILFS (loop2): invalid segment: Checksum error in segment payload [ 144.797037][ T6465] NILFS (loop4): invalid segment: Checksum error in segment payload [ 144.805863][ T6468] NILFS (loop0): invalid segment: Checksum error in segment payload [ 144.813672][ T6466] NILFS (loop5): trying rollback from an earlier position [ 144.817703][ T6468] NILFS (loop0): trying rollback from an earlier position [ 144.825261][ T6469] NILFS (loop1): recovery complete [pid 6467] close(4) = 0 [pid 6467] creat("./bus", 000 [pid 6466] <... mount resumed>) = 0 [pid 6467] <... creat resumed>) = 4 [ 144.838593][ T6471] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.860861][ T6465] NILFS (loop4): trying rollback from an earlier position [ 144.870121][ T6470] NILFS (loop2): trying rollback from an earlier position [ 144.879532][ T6466] NILFS (loop5): recovery complete [ 144.881665][ T6468] NILFS (loop0): recovery complete [pid 6467] unlink("./bus" [pid 6469] <... mount resumed>) = 0 [pid 6466] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6469] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6468] <... mount resumed>) = 0 [pid 6466] <... openat resumed>) = 3 [pid 6468] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6468] chdir("./file0") = 0 [pid 6468] ioctl(4, LOOP_CLR_FD) = 0 [pid 6468] close(4 [pid 6469] <... openat resumed>) = 3 [pid 6468] <... close resumed>) = 0 [pid 6467] <... unlink resumed>) = 0 [pid 6466] chdir("./file0" [ 144.894115][ T6473] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.896083][ T6465] NILFS (loop4): recovery complete [ 144.908079][ T6472] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.923573][ T6474] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6468] creat("./bus", 000 [pid 6467] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6469] chdir("./file0" [pid 6466] <... chdir resumed>) = 0 [pid 6465] <... mount resumed>) = 0 [pid 6469] <... chdir resumed>) = 0 [pid 6466] ioctl(4, LOOP_CLR_FD [pid 6465] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6469] ioctl(4, LOOP_CLR_FD [pid 6468] <... creat resumed>) = 4 [pid 6466] <... ioctl resumed>) = 0 [pid 6465] <... openat resumed>) = 3 [pid 6469] <... ioctl resumed>) = 0 [pid 6468] unlink("./bus" [pid 6466] close(4 [pid 6465] chdir("./file0" [pid 6469] close(4 [pid 6466] <... close resumed>) = 0 [pid 6465] <... chdir resumed>) = 0 [pid 6470] <... mount resumed>) = 0 [pid 6469] <... close resumed>) = 0 [pid 6468] <... unlink resumed>) = 0 [pid 6467] <... pwritev2 resumed>) = 65007 [pid 6466] creat("./bus", 000 [pid 6465] ioctl(4, LOOP_CLR_FD [pid 6470] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6469] creat("./bus", 000 [pid 6468] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6467] exit_group(0 [pid 6465] <... ioctl resumed>) = 0 [pid 6470] <... openat resumed>) = 3 [pid 6465] close(4 [pid 6470] chdir("./file0" [pid 6465] <... close resumed>) = 0 [pid 6470] <... chdir resumed>) = 0 [pid 6467] <... exit_group resumed>) = ? [pid 6465] creat("./bus", 000 [pid 6470] ioctl(4, LOOP_CLR_FD [pid 6469] <... creat resumed>) = 4 [pid 6470] <... ioctl resumed>) = 0 [pid 6469] unlink("./bus" [pid 6470] close(4) = 0 [pid 6470] creat("./bus", 000) = 4 [pid 6469] <... unlink resumed>) = 0 [pid 6468] <... pwritev2 resumed>) = 65007 [pid 6467] +++ exited with 0 +++ [pid 6466] <... creat resumed>) = 4 [pid 6465] <... creat resumed>) = 4 [pid 6470] unlink("./bus" [ 144.937621][ T6475] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 144.953292][ T6470] NILFS (loop2): recovery complete [ 144.971205][ T6476] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6469] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6465] unlink("./bus" [pid 6470] <... unlink resumed>) = 0 [pid 6468] exit_group(0 [pid 6466] unlink("./bus" [pid 6470] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6468] <... exit_group resumed>) = ? [pid 6466] <... unlink resumed>) = 0 [pid 6465] <... unlink resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6467, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6465] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6469] <... pwritev2 resumed>) = 65007 [pid 6466] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6469] exit_group(0) = ? [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6470] <... pwritev2 resumed>) = 65007 [pid 6468] +++ exited with 0 +++ [pid 6466] <... pwritev2 resumed>) = 65007 [pid 4996] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6468, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 6470] exit_group(0 [pid 6466] exit_group(0 [pid 6470] <... exit_group resumed>) = ? [pid 6469] +++ exited with 0 +++ [pid 6466] <... exit_group resumed>) = ? [pid 6465] <... pwritev2 resumed>) = 65007 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6469, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6465] exit_group(0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6465] <... exit_group resumed>) = ? [pid 4996] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 3 [pid 4996] lstat("./122/binderfs", [pid 4993] fstat(3, [pid 6470] +++ exited with 0 +++ [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6466] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6466, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] unlink("./122/binderfs" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6470, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(3, [pid 6465] +++ exited with 0 +++ [pid 4996] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6465, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 4993] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./121/binderfs", [pid 4995] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(3, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] unlink("./121/binderfs" [pid 4998] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] fstat(3, [pid 4994] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(3, [pid 4997] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] getdents64(3, [pid 4994] lstat("./121/binderfs", [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./121/binderfs" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... unlink resumed>) = 0 [pid 4995] lstat("./119/binderfs", [pid 4997] fstat(3, [pid 4994] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./119/binderfs") = 0 [pid 4995] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(3, [pid 4998] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./122/binderfs", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] lstat("./122/binderfs", [pid 4998] unlink("./122/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] unlink("./122/binderfs" [pid 4998] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./122/file0" [pid 4993] <... umount2 resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4994] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./122/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./121/file0", [pid 4993] lstat("./121/file0", [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./119/file0", [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 4 [pid 4994] fstat(4, [pid 4993] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 4995] fstat(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4998] getdents64(4, [pid 4995] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 4994] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 4993] getdents64(4, [pid 4998] close(4 [pid 4994] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] rmdir("./121/file0" [pid 4998] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./119/file0" [pid 4998] rmdir("./122/file0" [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4994] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] rmdir("./121/file0" [pid 4998] getdents64(3, [pid 4995] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4995] rmdir("./119" [pid 4998] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(3, [pid 4998] rmdir("./122" [pid 4996] getdents64(3, [pid 4995] <... rmdir resumed>) = 0 [pid 4994] rmdir("./121" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] mkdir("./120", 0777 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4998] mkdir("./123", 0777 [pid 4996] <... close resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4994] mkdir("./122", 0777 [pid 4993] <... close resumed>) = 0 [pid 4996] rmdir("./122" [pid 4994] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] rmdir("./121" [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] mkdir("./123", 0777 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... openat resumed>) = 3 [pid 4993] mkdir("./122", 0777 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... mkdir resumed>) = 0 [pid 4997] lstat("./122/file0", [pid 4998] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... mkdir resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] close(3 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4994] close(3 [pid 4993] <... openat resumed>) = 3 [pid 4998] close(3 [pid 4997] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6477 [pid 4993] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6478 [pid 4993] <... close resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6479 [pid 4997] fstat(4, [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6480 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6481 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, ./strace-static-x86_64: Process 6477 attached 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./122/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 6477] chdir("./120"./strace-static-x86_64: Process 6478 attached [pid 4997] rmdir("./122" [pid 6478] chdir("./122" [pid 6477] <... chdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4997] mkdir("./123", 0777 [pid 6478] <... chdir resumed>) = 0 [pid 6477] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 6481 attached ./strace-static-x86_64: Process 6480 attached ./strace-static-x86_64: Process 6479 attached [pid 6478] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6477] <... prctl resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 6481] chdir("./122" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6481] <... chdir resumed>) = 0 [pid 6478] <... prctl resumed>) = 0 [pid 6477] setpgid(0, 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6479] chdir("./123" [pid 6481] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] close(3 [pid 6481] <... prctl resumed>) = 0 [pid 6477] <... setpgid resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6481] setpgid(0, 0 [pid 6478] setpgid(0, 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6481] <... setpgid resumed>) = 0 [pid 6480] chdir("./123" [pid 6479] <... chdir resumed>) = 0 [pid 6478] <... setpgid resumed>) = 0 [pid 6477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6482 [pid 6481] <... openat resumed>) = 3 [pid 6480] <... chdir resumed>) = 0 [pid 6479] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6478] <... openat resumed>) = 3 [pid 6477] <... openat resumed>) = 3 [pid 6481] write(3, "1000", 4 [pid 6480] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6479] <... prctl resumed>) = 0 [pid 6478] write(3, "1000", 4 [pid 6477] write(3, "1000", 4 [pid 6481] <... write resumed>) = 4 [pid 6480] <... prctl resumed>) = 0 [pid 6479] setpgid(0, 0 [pid 6478] <... write resumed>) = 4 [pid 6477] <... write resumed>) = 4 ./strace-static-x86_64: Process 6482 attached [pid 6481] close(3 [pid 6480] setpgid(0, 0 [pid 6479] <... setpgid resumed>) = 0 [pid 6478] close(3 [pid 6477] close(3 [pid 6481] <... close resumed>) = 0 [pid 6480] <... setpgid resumed>) = 0 [pid 6479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6478] <... close resumed>) = 0 [pid 6477] <... close resumed>) = 0 [pid 6482] chdir("./123" [pid 6481] symlink("/dev/binderfs", "./binderfs" [pid 6480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6478] symlink("/dev/binderfs", "./binderfs" [pid 6477] symlink("/dev/binderfs", "./binderfs" [pid 6479] <... openat resumed>) = 3 [pid 6482] <... chdir resumed>) = 0 [pid 6481] <... symlink resumed>) = 0 [pid 6480] <... openat resumed>) = 3 [pid 6482] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6481] memfd_create("syzkaller", 0 [pid 6480] write(3, "1000", 4 [pid 6479] write(3, "1000", 4 [pid 6478] <... symlink resumed>) = 0 [pid 6477] <... symlink resumed>) = 0 [pid 6482] <... prctl resumed>) = 0 [pid 6481] <... memfd_create resumed>) = 3 [pid 6480] <... write resumed>) = 4 [pid 6479] <... write resumed>) = 4 [pid 6478] memfd_create("syzkaller", 0 [pid 6482] setpgid(0, 0 [pid 6481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6480] close(3 [pid 6479] close(3 [pid 6478] <... memfd_create resumed>) = 3 [pid 6477] memfd_create("syzkaller", 0 [pid 6482] <... setpgid resumed>) = 0 [pid 6481] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6480] <... close resumed>) = 0 [pid 6479] <... close resumed>) = 0 [pid 6478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6477] <... memfd_create resumed>) = 3 [pid 6482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6480] symlink("/dev/binderfs", "./binderfs" [pid 6479] symlink("/dev/binderfs", "./binderfs" [pid 6478] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6482] <... openat resumed>) = 3 [pid 6480] <... symlink resumed>) = 0 [pid 6479] <... symlink resumed>) = 0 [pid 6481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6482] write(3, "1000", 4 [pid 6477] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6482] <... write resumed>) = 4 [pid 6480] memfd_create("syzkaller", 0 [pid 6479] memfd_create("syzkaller", 0 [pid 6482] close(3) = 0 [pid 6480] <... memfd_create resumed>) = 3 [pid 6479] <... memfd_create resumed>) = 3 [pid 6478] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6482] symlink("/dev/binderfs", "./binderfs" [pid 6480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6482] <... symlink resumed>) = 0 [pid 6480] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6482] memfd_create("syzkaller", 0 [pid 6479] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6482] <... memfd_create resumed>) = 3 [pid 6482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6481] <... write resumed>) = 2097152 [pid 6481] munmap(0x7f46b9f9b000, 2097152 [pid 6480] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6481] <... munmap resumed>) = 0 [pid 6482] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6481] ioctl(4, LOOP_SET_FD, 3 [pid 6479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6481] <... ioctl resumed>) = 0 [pid 6481] close(3) = 0 [pid 6481] mkdir("./file0", 0777) = 0 [pid 6481] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6478] <... write resumed>) = 2097152 [ 145.378132][ T6481] loop0: detected capacity change from 0 to 4096 [pid 6482] <... write resumed>) = 2097152 [pid 6479] <... write resumed>) = 2097152 [pid 6478] munmap(0x7f46b9f9b000, 2097152 [pid 6479] munmap(0x7f46b9f9b000, 2097152 [pid 6478] <... munmap resumed>) = 0 [pid 6482] munmap(0x7f46b9f9b000, 2097152 [pid 6480] <... write resumed>) = 2097152 [pid 6478] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6482] <... munmap resumed>) = 0 [pid 6480] munmap(0x7f46b9f9b000, 2097152 [pid 6479] <... munmap resumed>) = 0 [pid 6478] <... openat resumed>) = 4 [pid 6482] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6480] <... munmap resumed>) = 0 [pid 6479] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6478] ioctl(4, LOOP_SET_FD, 3 [pid 6477] <... write resumed>) = 2097152 [pid 6482] <... openat resumed>) = 4 [pid 6480] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6479] <... openat resumed>) = 4 [pid 6479] ioctl(4, LOOP_SET_FD, 3 [pid 6477] munmap(0x7f46b9f9b000, 2097152 [pid 6482] ioctl(4, LOOP_SET_FD, 3 [pid 6480] <... openat resumed>) = 4 [pid 6479] <... ioctl resumed>) = 0 [pid 6477] <... munmap resumed>) = 0 [ 145.439347][ T6481] NILFS (loop0): invalid segment: Checksum error in segment payload [ 145.458859][ T6481] NILFS (loop0): trying rollback from an earlier position [ 145.466695][ T6478] loop1: detected capacity change from 0 to 4096 [ 145.474515][ T6479] loop5: detected capacity change from 0 to 4096 [ 145.482462][ T6482] loop4: detected capacity change from 0 to 4096 [pid 6480] ioctl(4, LOOP_SET_FD, 3 [pid 6482] <... ioctl resumed>) = 0 [pid 6480] <... ioctl resumed>) = 0 [pid 6479] close(3 [pid 6478] <... ioctl resumed>) = 0 [pid 6477] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6478] close(3 [pid 6477] <... openat resumed>) = 4 [pid 6482] close(3 [pid 6480] close(3 [pid 6478] <... close resumed>) = 0 [pid 6477] ioctl(4, LOOP_SET_FD, 3 [pid 6482] <... close resumed>) = 0 [pid 6480] <... close resumed>) = 0 [pid 6478] mkdir("./file0", 0777 [pid 6477] <... ioctl resumed>) = 0 [pid 6482] mkdir("./file0", 0777 [pid 6480] mkdir("./file0", 0777 [pid 6478] <... mkdir resumed>) = 0 [pid 6482] <... mkdir resumed>) = 0 [pid 6480] <... mkdir resumed>) = 0 [pid 6478] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6477] close(3 [pid 6482] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6480] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6477] <... close resumed>) = 0 [pid 6479] <... close resumed>) = 0 [pid 6477] mkdir("./file0", 0777) = 0 [pid 6477] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6479] mkdir("./file0", 0777 [pid 6481] <... mount resumed>) = 0 [pid 6479] <... mkdir resumed>) = 0 [pid 6481] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 145.489517][ T6480] loop3: detected capacity change from 0 to 4096 [ 145.498932][ T6477] loop2: detected capacity change from 0 to 4096 [ 145.499989][ T6481] NILFS (loop0): recovery complete [ 145.515124][ T6483] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6479] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6481] <... openat resumed>) = 3 [pid 6481] chdir("./file0") = 0 [pid 6481] ioctl(4, LOOP_CLR_FD) = 0 [pid 6481] close(4) = 0 [pid 6481] creat("./bus", 000) = 4 [pid 6481] unlink("./bus") = 0 [ 145.535406][ T6479] NILFS (loop5): invalid segment: Checksum error in segment payload [ 145.536877][ T6478] NILFS (loop1): invalid segment: Checksum error in segment payload [ 145.543409][ T6479] NILFS (loop5): trying rollback from an earlier position [ 145.553581][ T6480] NILFS (loop3): invalid segment: Checksum error in segment payload [ 145.567565][ T6482] NILFS (loop4): invalid segment: Checksum error in segment payload [ 145.580077][ T6477] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6481] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6481] exit_group(0) = ? [pid 6481] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6481, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4993] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 145.588741][ T6482] NILFS (loop4): trying rollback from an earlier position [ 145.596687][ T6477] NILFS (loop2): trying rollback from an earlier position [ 145.604674][ T6480] NILFS (loop3): trying rollback from an earlier position [ 145.613876][ T6478] NILFS (loop1): trying rollback from an earlier position [ 145.631272][ T6479] NILFS (loop5): recovery complete [pid 4993] lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./122/binderfs") = 0 [ 145.631705][ T6477] NILFS (loop2): recovery complete [pid 4993] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 6480] <... mount resumed>) = 0 [pid 6479] <... mount resumed>) = 0 [pid 6477] <... mount resumed>) = 0 [ 145.662406][ T6480] NILFS (loop3): recovery complete [ 145.673558][ T6478] NILFS (loop1): recovery complete [ 145.680434][ T6484] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.686933][ T6487] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.693818][ T6485] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6479] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6480] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6479] <... openat resumed>) = 3 [pid 6478] <... mount resumed>) = 0 [pid 6477] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6479] chdir("./file0" [pid 6478] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6479] <... chdir resumed>) = 0 [pid 6478] <... openat resumed>) = 3 [pid 6479] ioctl(4, LOOP_CLR_FD [pid 6478] chdir("./file0" [pid 6479] <... ioctl resumed>) = 0 [pid 6478] <... chdir resumed>) = 0 [pid 6479] close(4 [pid 6478] ioctl(4, LOOP_CLR_FD [pid 6480] <... openat resumed>) = 3 [pid 6479] <... close resumed>) = 0 [pid 6477] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6480] chdir("./file0" [pid 6479] creat("./bus", 000 [pid 6478] <... ioctl resumed>) = 0 [pid 6477] chdir("./file0" [pid 4993] lstat("./122/file0", [pid 6480] <... chdir resumed>) = 0 [pid 6478] close(4 [pid 6477] <... chdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6480] ioctl(4, LOOP_CLR_FD [pid 6478] <... close resumed>) = 0 [pid 6477] ioctl(4, LOOP_CLR_FD [pid 4993] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6480] <... ioctl resumed>) = 0 [pid 6477] <... ioctl resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6480] close(4 [pid 6477] close(4 [pid 4993] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6480] <... close resumed>) = 0 [pid 6477] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 6480] creat("./bus", 000 [pid 6477] creat("./bus", 000 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6478] creat("./bus", 000 [pid 4993] getdents64(4, [pid 6480] <... creat resumed>) = 4 [pid 6479] <... creat resumed>) = 4 [pid 6477] <... creat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6480] unlink("./bus" [pid 6479] unlink("./bus" [pid 6478] <... creat resumed>) = 4 [pid 6477] unlink("./bus" [pid 4993] getdents64(4, [pid 6482] <... mount resumed>) = 0 [pid 6480] <... unlink resumed>) = 0 [pid 6479] <... unlink resumed>) = 0 [pid 6478] unlink("./bus" [pid 6477] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6482] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6480] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6479] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6477] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] close(4 [pid 6478] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./122/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./122") = 0 [pid 6482] <... openat resumed>) = 3 [pid 6480] <... pwritev2 resumed>) = 65007 [pid 6479] <... pwritev2 resumed>) = 65007 [pid 6478] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6477] <... pwritev2 resumed>) = 65007 [pid 4993] mkdir("./123", 0777 [pid 6482] chdir("./file0" [pid 6480] exit_group(0 [pid 6479] exit_group(0 [pid 6477] exit_group(0 [pid 4993] <... mkdir resumed>) = 0 [pid 6477] <... exit_group resumed>) = ? [ 145.703784][ T6482] NILFS (loop4): recovery complete [ 145.712954][ T6486] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 145.742963][ T6488] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6482] <... chdir resumed>) = 0 [pid 6480] <... exit_group resumed>) = ? [pid 6479] <... exit_group resumed>) = ? [pid 6478] <... pwritev2 resumed>) = 65007 [pid 4993] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6482] ioctl(4, LOOP_CLR_FD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6489 ./strace-static-x86_64: Process 6489 attached [pid 6489] chdir("./123") = 0 [pid 6489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6482] <... ioctl resumed>) = 0 [pid 6478] exit_group(0 [pid 6489] setpgid(0, 0 [pid 6482] close(4 [pid 6478] <... exit_group resumed>) = ? [pid 6489] <... setpgid resumed>) = 0 [pid 6482] <... close resumed>) = 0 [pid 6489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6482] creat("./bus", 000 [pid 6477] +++ exited with 0 +++ [pid 6489] <... openat resumed>) = 3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6477, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6489] write(3, "1000", 4) = 4 [pid 6489] close(3 [pid 6482] <... creat resumed>) = 4 [pid 6489] <... close resumed>) = 0 [pid 6489] symlink("/dev/binderfs", "./binderfs" [pid 6482] unlink("./bus" [pid 6489] <... symlink resumed>) = 0 [pid 6479] +++ exited with 0 +++ [pid 6489] memfd_create("syzkaller", 0 [pid 6482] <... unlink resumed>) = 0 [pid 6480] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6479, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6489] <... memfd_create resumed>) = 3 [pid 6482] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6480, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6489] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, [pid 4998] <... openat resumed>) = 3 [pid 4996] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(3, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] getdents64(3, [pid 4996] <... openat resumed>) = 3 [pid 4995] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] fstat(3, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./120/binderfs", [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] lstat("./123/binderfs", [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] unlink("./120/binderfs" [pid 6478] +++ exited with 0 +++ [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... unlink resumed>) = 0 [pid 6482] <... pwritev2 resumed>) = 65007 [pid 4998] unlink("./123/binderfs" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6482] exit_group(0 [pid 4998] <... unlink resumed>) = 0 [pid 4996] lstat("./123/binderfs", [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6478, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6482] <... exit_group resumed>) = ? [pid 4998] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] unlink("./123/binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 6482] +++ exited with 0 +++ [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6482, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] getdents64(3, [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4994] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./122/binderfs", [pid 4997] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./122/binderfs" [pid 4997] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... unlink resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = 0 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = 0 [pid 4997] lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./123/binderfs" [pid 4995] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./120/file0", [pid 4998] lstat("./123/file0", [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4996] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./123/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4998] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(4 [pid 4998] <... openat resumed>) = 4 [pid 4996] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 4998] fstat(4, [pid 4996] <... openat resumed>) = 4 [pid 4995] rmdir("./120/file0" [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... close resumed>) = 0 [pid 4995] close(3 [pid 4998] getdents64(4, [pid 4996] rmdir("./123/file0" [pid 4995] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./123") = 0 [pid 4996] mkdir("./124", 0777) = 0 [pid 4995] rmdir("./120" [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... rmdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4995] mkdir("./121", 0777 [pid 4998] <... close resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6490 [pid 4995] <... mkdir resumed>) = 0 [pid 4998] rmdir("./123/file0"./strace-static-x86_64: Process 6490 attached [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] getdents64(3, [pid 6490] chdir("./124") = 0 [pid 6490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6490] setpgid(0, 0) = 0 [pid 6490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4998] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] rmdir("./123" [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6490] <... openat resumed>) = 3 [pid 6490] write(3, "1000", 4 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6491 [pid 6490] <... write resumed>) = 4 [pid 6490] close(3 [pid 4998] mkdir("./124", 0777 [pid 6490] <... close resumed>) = 0 [pid 6489] <... write resumed>) = 2097152 [pid 4998] <... mkdir resumed>) = 0 [pid 6490] symlink("/dev/binderfs", "./binderfs" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 6491 attached [pid 6490] <... symlink resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 6490] memfd_create("syzkaller", 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6490] <... memfd_create resumed>) = 3 [pid 6490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6491] chdir("./121" [pid 6490] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] close(3) = 0 [pid 6489] munmap(0x7f46b9f9b000, 2097152 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6491] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6491] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6492 [pid 6491] <... prctl resumed>) = 0 [pid 6491] setpgid(0, 0) = 0 [pid 4994] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6491] <... openat resumed>) = 3 [pid 4994] lstat("./122/file0", [pid 6491] write(3, "1000", 4 [pid 6489] <... munmap resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6491] <... write resumed>) = 4 [pid 6491] close(3 [pid 6489] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6491] <... close resumed>) = 0 [pid 6489] <... openat resumed>) = 4 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6492 attached [pid 6491] symlink("/dev/binderfs", "./binderfs" [pid 6489] ioctl(4, LOOP_SET_FD, 3 [pid 6492] chdir("./124" [pid 6491] <... symlink resumed>) = 0 [pid 4997] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6492] <... chdir resumed>) = 0 [pid 6491] memfd_create("syzkaller", 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6492] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... openat resumed>) = 4 [pid 6492] <... prctl resumed>) = 0 [pid 6492] setpgid(0, 0) = 0 [pid 6492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] lstat("./123/file0", [pid 4994] fstat(4, [pid 6492] <... openat resumed>) = 3 [pid 6491] <... memfd_create resumed>) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6492] write(3, "1000", 4 [pid 6491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6492] <... write resumed>) = 4 [pid 6491] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, [pid 6492] close(3) = 0 [pid 6492] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6492] memfd_create("syzkaller", 0) = 3 [pid 6490] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6489] <... ioctl resumed>) = 0 [pid 6489] close(3) = 0 [pid 6489] mkdir("./file0", 0777) = 0 [pid 6489] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] fstat(4, [pid 4994] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4994] close(4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4994] rmdir("./122/file0" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4997] rmdir("./123/file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 4997] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./122" [pid 4997] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./123" [pid 4994] mkdir("./123", 0777 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4997] mkdir("./124", 0777 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... openat resumed>) = 3 [ 145.965691][ T6489] loop0: detected capacity change from 0 to 4096 [pid 6491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3 [pid 4997] close(3 [pid 4994] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6493 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6494 ./strace-static-x86_64: Process 6493 attached [pid 6492] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6493] chdir("./123"./strace-static-x86_64: Process 6494 attached [pid 6494] chdir("./124" [pid 6493] <... chdir resumed>) = 0 [pid 6494] <... chdir resumed>) = 0 [pid 6493] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6493] <... prctl resumed>) = 0 [pid 6494] setpgid(0, 0 [pid 6493] setpgid(0, 0 [pid 6494] <... setpgid resumed>) = 0 [pid 6493] <... setpgid resumed>) = 0 [pid 6494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6490] <... write resumed>) = 2097152 [pid 6494] <... openat resumed>) = 3 [pid 6493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6494] write(3, "1000", 4) = 4 [pid 6494] close(3 [pid 6493] <... openat resumed>) = 3 [pid 6494] <... close resumed>) = 0 [pid 6494] symlink("/dev/binderfs", "./binderfs" [pid 6493] write(3, "1000", 4 [pid 6494] <... symlink resumed>) = 0 [ 146.023801][ T6489] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6494] memfd_create("syzkaller", 0 [pid 6493] <... write resumed>) = 4 [pid 6494] <... memfd_create resumed>) = 3 [pid 6493] close(3 [pid 6491] <... write resumed>) = 2097152 [pid 6494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6493] <... close resumed>) = 0 [pid 6490] munmap(0x7f46b9f9b000, 2097152 [pid 6493] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6493] memfd_create("syzkaller", 0) = 3 [pid 6493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6491] munmap(0x7f46b9f9b000, 2097152 [pid 6493] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6490] <... munmap resumed>) = 0 [pid 6490] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6490] ioctl(4, LOOP_SET_FD, 3 [pid 6492] <... write resumed>) = 2097152 [pid 6491] <... munmap resumed>) = 0 [pid 6491] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6492] munmap(0x7f46b9f9b000, 2097152 [pid 6491] <... openat resumed>) = 4 [pid 6492] <... munmap resumed>) = 0 [pid 6491] ioctl(4, LOOP_SET_FD, 3 [pid 6490] <... ioctl resumed>) = 0 [pid 6490] close(3) = 0 [ 146.068080][ T6489] NILFS (loop0): trying rollback from an earlier position [ 146.105562][ T6490] loop3: detected capacity change from 0 to 4096 [pid 6492] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6490] mkdir("./file0", 0777 [pid 6494] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6492] <... openat resumed>) = 4 [pid 6490] <... mkdir resumed>) = 0 [pid 6492] ioctl(4, LOOP_SET_FD, 3 [pid 6490] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6492] <... ioctl resumed>) = 0 [pid 6491] <... ioctl resumed>) = 0 [pid 6492] close(3 [pid 6491] close(3 [pid 6492] <... close resumed>) = 0 [pid 6492] mkdir("./file0", 0777) = 0 [pid 6492] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6491] <... close resumed>) = 0 [pid 6491] mkdir("./file0", 0777) = 0 [ 146.136899][ T6491] loop2: detected capacity change from 0 to 4096 [ 146.145037][ T6492] loop5: detected capacity change from 0 to 4096 [ 146.152869][ T6489] NILFS (loop0): recovery complete [pid 6491] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6489] <... mount resumed>) = 0 [pid 6489] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6489] chdir("./file0") = 0 [pid 6489] ioctl(4, LOOP_CLR_FD) = 0 [pid 6489] close(4) = 0 [ 146.190043][ T6492] NILFS (loop5): invalid segment: Checksum error in segment payload [ 146.200322][ T6490] NILFS (loop3): invalid segment: Checksum error in segment payload [ 146.209806][ T6491] NILFS (loop2): invalid segment: Checksum error in segment payload [ 146.215615][ T6490] NILFS (loop3): trying rollback from an earlier position [ 146.227465][ T6495] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6489] creat("./bus", 000 [pid 6494] <... write resumed>) = 2097152 [pid 6494] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6494] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6494] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6494] close(3) = 0 [pid 6494] mkdir("./file0", 0777) = 0 [pid 6494] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6489] <... creat resumed>) = 4 [pid 6489] unlink("./bus") = 0 [ 146.231573][ T6492] NILFS (loop5): trying rollback from an earlier position [ 146.253162][ T6494] loop4: detected capacity change from 0 to 4096 [ 146.271016][ T6491] NILFS (loop2): trying rollback from an earlier position [pid 6489] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6493] <... write resumed>) = 2097152 [pid 6493] munmap(0x7f46b9f9b000, 2097152 [pid 6489] <... pwritev2 resumed>) = 65007 [pid 6489] exit_group(0) = ? [pid 6493] <... munmap resumed>) = 0 [pid 6493] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6493] ioctl(4, LOOP_SET_FD, 3 [pid 6489] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6489, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [ 146.300120][ T6490] NILFS (loop3): recovery complete [ 146.316780][ T6494] NILFS (loop4): invalid segment: Checksum error in segment payload [ 146.328754][ T6491] NILFS (loop2): recovery complete [ 146.338208][ T6493] loop1: detected capacity change from 0 to 4096 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6493] <... ioctl resumed>) = 0 [pid 4993] <... restart_syscall resumed>) = 0 [pid 4993] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./123/binderfs") = 0 [pid 4993] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6493] close(3) = 0 [pid 6493] mkdir("./file0", 0777 [pid 6490] <... mount resumed>) = 0 [pid 6490] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6490] chdir("./file0") = 0 [pid 6490] ioctl(4, LOOP_CLR_FD) = 0 [pid 6490] close(4) = 0 [ 146.341469][ T6494] NILFS (loop4): trying rollback from an earlier position [ 146.352778][ T6492] NILFS (loop5): recovery complete [ 146.361386][ T6496] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6490] creat("./bus", 000 [pid 6493] <... mkdir resumed>) = 0 [pid 6491] <... mount resumed>) = 0 [pid 6493] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6491] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6492] <... mount resumed>) = 0 [pid 6491] <... openat resumed>) = 3 [pid 6492] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6491] chdir("./file0" [pid 6492] <... openat resumed>) = 3 [pid 6491] <... chdir resumed>) = 0 [pid 6492] chdir("./file0" [pid 6491] ioctl(4, LOOP_CLR_FD) = 0 [pid 6491] close(4 [pid 6492] <... chdir resumed>) = 0 [pid 6491] <... close resumed>) = 0 [pid 6492] ioctl(4, LOOP_CLR_FD [pid 6491] creat("./bus", 000 [pid 6492] <... ioctl resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [ 146.393503][ T6497] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 146.404323][ T6498] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 146.416865][ T6494] NILFS (loop4): recovery complete [ 146.431865][ T6493] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6492] close(4 [pid 6490] <... creat resumed>) = 4 [pid 4993] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6492] <... close resumed>) = 0 [pid 6490] unlink("./bus" [pid 6492] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6490] <... unlink resumed>) = 0 [pid 6490] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] lstat("./123/file0", [pid 6492] <... creat resumed>) = 4 [pid 6492] unlink("./bus" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6492] <... unlink resumed>) = 0 [pid 6491] <... creat resumed>) = 4 [pid 4993] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6492] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6491] unlink("./bus" [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./123/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./123") = 0 [ 146.443006][ T6493] NILFS (loop1): trying rollback from an earlier position [pid 4993] mkdir("./124", 0777 [pid 6494] <... mount resumed>) = 0 [pid 6491] <... unlink resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 6494] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6494] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6494] chdir("./file0" [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6494] <... chdir resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6494] ioctl(4, LOOP_CLR_FD [pid 4993] close(3 [pid 6494] <... ioctl resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6494] close(4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6494] <... close resumed>) = 0 [pid 6494] creat("./bus", 000 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6500 ./strace-static-x86_64: Process 6500 attached [pid 6500] chdir("./124") = 0 [pid 6500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6500] setpgid(0, 0 [pid 6491] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6500] <... setpgid resumed>) = 0 [pid 6500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6500] write(3, "1000", 4) = 4 [pid 6500] close(3) = 0 [pid 6500] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6500] memfd_create("syzkaller", 0 [pid 6490] <... pwritev2 resumed>) = 65007 [pid 6500] <... memfd_create resumed>) = 3 [pid 6500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6492] <... pwritev2 resumed>) = 65007 [pid 6490] exit_group(0 [pid 6500] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6492] exit_group(0 [pid 6491] <... pwritev2 resumed>) = 65007 [pid 6490] <... exit_group resumed>) = ? [pid 6492] <... exit_group resumed>) = ? [pid 6491] exit_group(0) = ? [ 146.494916][ T6499] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6490] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6490, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6492] +++ exited with 0 +++ [pid 6491] +++ exited with 0 +++ [pid 4996] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6492, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6494] <... creat resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6494] unlink("./bus" [pid 4998] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6491, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 6494] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... openat resumed>) = 3 [ 146.542294][ T6493] NILFS (loop1): recovery complete [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6500] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6494] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] fstat(3, [pid 4995] <... restart_syscall resumed>) = 0 [pid 6493] <... mount resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6493] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] fstat(3, [pid 4996] getdents64(3, [pid 6493] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6493] chdir("./file0" [pid 4998] getdents64(3, [pid 4996] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6494] <... pwritev2 resumed>) = 65007 [pid 6493] <... chdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6494] exit_group(0 [pid 6493] ioctl(4, LOOP_CLR_FD [pid 4998] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./124/binderfs", [pid 4995] <... openat resumed>) = 3 [pid 6494] <... exit_group resumed>) = ? [pid 6493] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] fstat(3, [pid 6500] <... write resumed>) = 2097152 [pid 6493] close(4 [pid 4998] lstat("./124/binderfs", [pid 4996] unlink("./124/binderfs" [pid 6500] munmap(0x7f46b9f9b000, 2097152 [pid 6493] <... close resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6500] <... munmap resumed>) = 0 [pid 6493] creat("./bus", 000 [pid 4998] unlink("./124/binderfs" [pid 4996] <... unlink resumed>) = 0 [pid 4995] getdents64(3, [pid 6500] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6493] <... creat resumed>) = 4 [pid 4998] <... unlink resumed>) = 0 [pid 4996] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6500] <... openat resumed>) = 4 [pid 6493] unlink("./bus" [ 146.572463][ T6501] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6500] ioctl(4, LOOP_SET_FD, 3 [pid 6493] <... unlink resumed>) = 0 [pid 6500] <... ioctl resumed>) = 0 [pid 6494] +++ exited with 0 +++ [pid 6493] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6500] close(3 [pid 4998] <... umount2 resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6500] <... close resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6494, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 4995] lstat("./121/binderfs", [pid 6500] mkdir("./file0", 0777 [pid 4998] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 6500] <... mkdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6500] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 146.622918][ T6500] loop0: detected capacity change from 0 to 4096 [pid 6493] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] unlink("./121/binderfs" [pid 6493] exit_group(0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./124/file0", [pid 4997] <... openat resumed>) = 3 [pid 4996] lstat("./124/file0", [pid 4995] <... unlink resumed>) = 0 [pid 6493] <... exit_group resumed>) = ? [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(3, [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(3, [pid 4996] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] fstat(4, [pid 4998] fstat(4, [pid 4997] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4997] lstat("./124/binderfs", [pid 4996] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(4, [pid 4997] unlink("./124/binderfs" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4996] getdents64(4, [pid 4998] close(4 [pid 4997] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./124/file0" [pid 4996] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 6493] +++ exited with 0 +++ [pid 4998] getdents64(3, [pid 4996] rmdir("./124/file0" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4996] getdents64(3, [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6493, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4998] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4998] rmdir("./124" [pid 4996] close(3 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4998] mkdir("./125", 0777 [pid 4996] rmdir("./124" [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] mkdir("./125", 0777 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 3 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... openat resumed>) = 3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... openat resumed>) = 3 [pid 4994] fstat(3, [ 146.665033][ T6500] NILFS (loop0): invalid segment: Checksum error in segment payload [ 146.673077][ T6500] NILFS (loop0): trying rollback from an earlier position [pid 4998] close(3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] getdents64(3, [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... close resumed>) = 0 [pid 4994] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6502 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./123/binderfs", [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6503 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./123/binderfs"./strace-static-x86_64: Process 6503 attached ) = 0 [pid 4994] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6503] chdir("./125" [pid 4997] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6502 attached [pid 6502] chdir("./125") = 0 [pid 6502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6502] setpgid(0, 0) = 0 [pid 6502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6502] write(3, "1000", 4) = 4 [pid 6502] close(3) = 0 [pid 6502] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6503] <... chdir resumed>) = 0 [pid 6502] memfd_create("syzkaller", 0 [pid 6503] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6502] <... memfd_create resumed>) = 3 [pid 6503] <... prctl resumed>) = 0 [pid 6502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6503] setpgid(0, 0 [pid 6502] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6503] <... setpgid resumed>) = 0 [pid 4997] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6503] <... openat resumed>) = 3 [pid 4997] lstat("./124/file0", [pid 4995] <... umount2 resumed>) = 0 [pid 6503] write(3, "1000", 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6503] <... write resumed>) = 4 [pid 4997] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6503] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 146.738794][ T6500] NILFS (loop0): recovery complete [pid 6503] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] lstat("./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./121/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./121") = 0 [pid 4995] mkdir("./122", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6505 [pid 6503] symlink("/dev/binderfs", "./binderfs" [pid 6500] <... mount resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 6503] <... symlink resumed>) = 0 [pid 6502] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6500] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] fstat(4, ./strace-static-x86_64: Process 6505 attached [pid 6503] memfd_create("syzkaller", 0 [pid 6500] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6505] chdir("./122" [pid 6503] <... memfd_create resumed>) = 3 [pid 6500] chdir("./file0" [pid 4997] getdents64(4, [pid 6505] <... chdir resumed>) = 0 [pid 6503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6500] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6505] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6503] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6500] ioctl(4, LOOP_CLR_FD [pid 4997] getdents64(4, [pid 6505] <... prctl resumed>) = 0 [pid 6505] setpgid(0, 0) = 0 [pid 6505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6505] write(3, "1000", 4) = 4 [pid 6505] close(3 [pid 6500] <... ioctl resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6505] <... close resumed>) = 0 [ 146.778598][ T6504] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6500] close(4 [pid 4997] close(4 [pid 6505] symlink("/dev/binderfs", "./binderfs" [pid 6503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6500] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6505] <... symlink resumed>) = 0 [pid 6500] creat("./bus", 000 [pid 4997] <... close resumed>) = 0 [pid 4994] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6505] memfd_create("syzkaller", 0 [pid 4997] rmdir("./124/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6505] <... memfd_create resumed>) = 3 [pid 6500] <... creat resumed>) = 4 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] lstat("./123/file0", [pid 6505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6500] unlink("./bus" [pid 4997] getdents64(3, [pid 6505] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6500] <... unlink resumed>) = 0 [pid 4997] close(3 [pid 4994] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6500] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4997] rmdir("./124" [pid 4994] rmdir("./123/file0" [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] mkdir("./125", 0777 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./123" [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./124", 0777 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... mkdir resumed>) = 0 [pid 6500] <... pwritev2 resumed>) = 65007 [pid 4997] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6500] exit_group(0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... openat resumed>) = 3 [pid 6500] <... exit_group resumed>) = ? [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6502] <... write resumed>) = 2097152 [pid 4997] close(3 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... close resumed>) = 0 [pid 4994] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6506 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6507 ./strace-static-x86_64: Process 6506 attached [pid 6506] chdir("./124" [pid 6505] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6506] <... chdir resumed>) = 0 [pid 6506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6506] setpgid(0, 0./strace-static-x86_64: Process 6507 attached ) = 0 [pid 6500] +++ exited with 0 +++ [pid 6506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6500, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6507] chdir("./125" [pid 6506] <... openat resumed>) = 3 [pid 6503] <... write resumed>) = 2097152 [pid 6507] <... chdir resumed>) = 0 [pid 6506] write(3, "1000", 4 [pid 6503] munmap(0x7f46b9f9b000, 2097152 [pid 6507] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6506] <... write resumed>) = 4 [pid 4993] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6507] <... prctl resumed>) = 0 [pid 6506] close(3 [pid 6503] <... munmap resumed>) = 0 [pid 6502] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6507] setpgid(0, 0 [pid 6506] <... close resumed>) = 0 [pid 6503] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6502] <... munmap resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6507] <... setpgid resumed>) = 0 [pid 6506] symlink("/dev/binderfs", "./binderfs" [pid 6503] <... openat resumed>) = 4 [pid 6502] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... openat resumed>) = 3 [pid 6507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6506] <... symlink resumed>) = 0 [pid 6503] ioctl(4, LOOP_SET_FD, 3 [pid 6502] <... openat resumed>) = 4 [pid 4993] fstat(3, [pid 6507] <... openat resumed>) = 3 [pid 6506] memfd_create("syzkaller", 0 [pid 6502] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6507] write(3, "1000", 4 [pid 6506] <... memfd_create resumed>) = 3 [pid 6503] <... ioctl resumed>) = 0 [pid 4993] getdents64(3, [pid 6507] <... write resumed>) = 4 [pid 6506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6507] close(3 [pid 6506] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6503] close(3 [pid 4993] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6507] <... close resumed>) = 0 [pid 6503] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6507] symlink("/dev/binderfs", "./binderfs" [pid 6503] mkdir("./file0", 0777 [pid 4993] lstat("./124/binderfs", [pid 6507] <... symlink resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6507] memfd_create("syzkaller", 0 [pid 6503] <... mkdir resumed>) = 0 [pid 4993] unlink("./124/binderfs" [pid 6507] <... memfd_create resumed>) = 3 [pid 6505] <... write resumed>) = 2097152 [pid 6503] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6502] <... ioctl resumed>) = 0 [pid 6507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6506] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6507] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6505] munmap(0x7f46b9f9b000, 2097152 [ 146.930748][ T6503] loop3: detected capacity change from 0 to 4096 [ 146.932602][ T6502] loop5: detected capacity change from 0 to 4096 [ 146.966664][ T6503] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6502] close(3 [pid 6505] <... munmap resumed>) = 0 [pid 6502] <... close resumed>) = 0 [pid 6507] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6505] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6502] mkdir("./file0", 0777 [pid 6505] <... openat resumed>) = 4 [pid 6505] ioctl(4, LOOP_SET_FD, 3 [pid 6502] <... mkdir resumed>) = 0 [ 146.975531][ T6503] NILFS (loop3): trying rollback from an earlier position [pid 6502] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = 0 [pid 6506] <... write resumed>) = 2097152 [pid 4993] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./124/file0", [pid 6506] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6506] <... munmap resumed>) = 0 [pid 4993] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6506] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... openat resumed>) = 4 [pid 6506] <... openat resumed>) = 4 [pid 6505] <... ioctl resumed>) = 0 [ 147.011882][ T6505] loop2: detected capacity change from 0 to 4096 [ 147.025306][ T6502] NILFS (loop5): invalid segment: Checksum error in segment payload [ 147.044200][ T6502] NILFS (loop5): trying rollback from an earlier position [ 147.054635][ T6503] NILFS (loop3): recovery complete [pid 6506] ioctl(4, LOOP_SET_FD, 3 [pid 4993] fstat(4, [pid 6507] <... write resumed>) = 2097152 [pid 6505] close(3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 6507] munmap(0x7f46b9f9b000, 2097152 [pid 6505] <... close resumed>) = 0 [pid 4993] rmdir("./124/file0" [pid 6507] <... munmap resumed>) = 0 [pid 6505] mkdir("./file0", 0777 [pid 4993] <... rmdir resumed>) = 0 [pid 6507] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./124") = 0 [pid 4993] mkdir("./125", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6507] <... openat resumed>) = 4 [pid 6505] <... mkdir resumed>) = 0 [pid 6502] <... mount resumed>) = 0 [pid 6503] <... mount resumed>) = 0 ./strace-static-x86_64: Process 6510 attached [pid 6507] ioctl(4, LOOP_SET_FD, 3 [pid 6506] <... ioctl resumed>) = 0 [pid 6505] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6503] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6502] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6510 [pid 6510] chdir("./125") = 0 [pid 6510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6510] setpgid(0, 0) = 0 [pid 6510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6506] close(3 [pid 6510] write(3, "1000", 4 [pid 6506] <... close resumed>) = 0 [pid 6503] <... openat resumed>) = 3 [pid 6502] <... openat resumed>) = 3 [pid 6510] <... write resumed>) = 4 [pid 6507] <... ioctl resumed>) = 0 [pid 6506] mkdir("./file0", 0777 [ 147.057037][ T6506] loop1: detected capacity change from 0 to 4096 [ 147.069293][ T6502] NILFS (loop5): recovery complete [ 147.077870][ T6509] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.089542][ T6508] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.104412][ T6507] loop4: detected capacity change from 0 to 4096 [pid 6503] chdir("./file0" [pid 6502] chdir("./file0" [pid 6510] close(3 [pid 6503] <... chdir resumed>) = 0 [pid 6510] <... close resumed>) = 0 [pid 6503] ioctl(4, LOOP_CLR_FD [pid 6510] symlink("/dev/binderfs", "./binderfs" [pid 6503] <... ioctl resumed>) = 0 [pid 6510] <... symlink resumed>) = 0 [pid 6503] close(4 [pid 6510] memfd_create("syzkaller", 0 [pid 6503] <... close resumed>) = 0 [pid 6510] <... memfd_create resumed>) = 3 [pid 6503] creat("./bus", 000 [pid 6510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6506] <... mkdir resumed>) = 0 [pid 6502] <... chdir resumed>) = 0 [pid 6506] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6502] ioctl(4, LOOP_CLR_FD) = 0 [pid 6502] close(4 [pid 6507] close(3) = 0 [pid 6502] <... close resumed>) = 0 [pid 6502] creat("./bus", 000 [pid 6507] mkdir("./file0", 0777 [pid 6503] <... creat resumed>) = 4 [pid 6503] unlink("./bus" [ 147.116046][ T6505] NILFS (loop2): invalid segment: Checksum error in segment payload [ 147.142726][ T6506] NILFS (loop1): invalid segment: Checksum error in segment payload [ 147.151067][ T6505] NILFS (loop2): trying rollback from an earlier position [pid 6507] <... mkdir resumed>) = 0 [pid 6503] <... unlink resumed>) = 0 [pid 6507] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6503] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6502] <... creat resumed>) = 4 [pid 6510] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6502] unlink("./bus") = 0 [pid 6502] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6503] <... pwritev2 resumed>) = 65007 [pid 6503] exit_group(0) = ? [pid 6502] <... pwritev2 resumed>) = 65007 [pid 6502] exit_group(0) = ? [ 147.160143][ T6506] NILFS (loop1): trying rollback from an earlier position [ 147.177047][ T6507] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6503] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6503, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 6502] +++ exited with 0 +++ [pid 4996] <... restart_syscall resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6502, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4996] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... restart_syscall resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6505] <... mount resumed>) = 0 [pid 6506] <... mount resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] fstat(3, [ 147.210217][ T6505] NILFS (loop2): recovery complete [ 147.221718][ T6507] NILFS (loop4): trying rollback from an earlier position [ 147.234624][ T6506] NILFS (loop1): recovery complete [ 147.244480][ T6512] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, [pid 4998] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] fstat(3, [pid 4996] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6506] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6505] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] getdents64(3, [pid 4996] lstat("./125/binderfs", [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] unlink("./125/binderfs" [pid 6506] <... openat resumed>) = 3 [pid 6505] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... unlink resumed>) = 0 [pid 6506] chdir("./file0" [pid 6505] chdir("./file0" [pid 4998] lstat("./125/binderfs", [pid 4996] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6506] <... chdir resumed>) = 0 [pid 6505] <... chdir resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6510] <... write resumed>) = 2097152 [pid 6506] ioctl(4, LOOP_CLR_FD [pid 6505] ioctl(4, LOOP_CLR_FD [pid 4998] unlink("./125/binderfs" [pid 6510] munmap(0x7f46b9f9b000, 2097152 [pid 6507] <... mount resumed>) = 0 [pid 6506] <... ioctl resumed>) = 0 [pid 6505] <... ioctl resumed>) = 0 [pid 6510] <... munmap resumed>) = 0 [pid 6507] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6506] close(4 [pid 6505] close(4 [pid 4998] <... unlink resumed>) = 0 [pid 6510] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6507] <... openat resumed>) = 3 [pid 6506] <... close resumed>) = 0 [pid 6505] <... close resumed>) = 0 [pid 6510] <... openat resumed>) = 4 [pid 6507] chdir("./file0" [pid 6506] creat("./bus", 000 [pid 6505] creat("./bus", 000 [pid 6510] ioctl(4, LOOP_SET_FD, 3 [pid 6507] <... chdir resumed>) = 0 [pid 6510] <... ioctl resumed>) = 0 [pid 6507] ioctl(4, LOOP_CLR_FD [pid 4998] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6507] <... ioctl resumed>) = 0 [pid 6507] close(4 [pid 6510] close(3 [pid 6507] <... close resumed>) = 0 [pid 6510] <... close resumed>) = 0 [pid 6507] creat("./bus", 000 [pid 6506] <... creat resumed>) = 4 [pid 6505] <... creat resumed>) = 4 [pid 6510] mkdir("./file0", 0777 [pid 6506] unlink("./bus" [pid 6505] unlink("./bus" [pid 6510] <... mkdir resumed>) = 0 [pid 6507] <... creat resumed>) = 4 [pid 6506] <... unlink resumed>) = 0 [pid 6510] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6507] unlink("./bus" [pid 6505] <... unlink resumed>) = 0 [pid 6507] <... unlink resumed>) = 0 [pid 6506] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6505] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6507] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6507] exit_group(0) = ? [ 147.257166][ T6511] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.268312][ T6507] NILFS (loop4): recovery complete [ 147.280683][ T6513] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.296592][ T6510] loop0: detected capacity change from 0 to 4096 [pid 6505] <... pwritev2 resumed>) = 65007 [pid 6506] <... pwritev2 resumed>) = 65007 [pid 6505] exit_group(0 [pid 4998] <... umount2 resumed>) = 0 [pid 6506] exit_group(0 [pid 6505] <... exit_group resumed>) = ? [pid 4998] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 6506] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6507] +++ exited with 0 +++ [pid 4998] fstat(4, [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6507, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] close(4 [pid 4997] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] rmdir("./125/file0" [pid 4997] lstat("./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] unlink("./125/binderfs" [pid 4998] getdents64(3, [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./125" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./125/file0", [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] mkdir("./126", 0777 [pid 4996] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 147.338489][ T6510] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6505] +++ exited with 0 +++ [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] getdents64(4, [pid 4998] <... openat resumed>) = 3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6505, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=9 /* 0.09 s */} --- [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 4995] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6514 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./122/binderfs") = 0 [pid 4995] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6514 attached [pid 6514] chdir("./126" [pid 4997] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6506] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6506, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 6514] <... chdir resumed>) = 0 [pid 4997] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6514] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] close(4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6514] <... prctl resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6514] setpgid(0, 0 [pid 4997] <... openat resumed>) = 4 [pid 4996] rmdir("./125/file0" [pid 4994] <... openat resumed>) = 3 [ 147.386079][ T6510] NILFS (loop0): trying rollback from an earlier position [pid 6514] <... setpgid resumed>) = 0 [pid 4997] fstat(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4994] fstat(3, [pid 6514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6514] <... openat resumed>) = 3 [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(3, [pid 6514] write(3, "1000", 4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6514] <... write resumed>) = 4 [pid 4997] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4994] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6514] close(3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./125" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6514] <... close resumed>) = 0 [pid 4994] lstat("./124/binderfs", [pid 6514] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6514] <... symlink resumed>) = 0 [pid 4994] unlink("./124/binderfs" [pid 6514] memfd_create("syzkaller", 0 [pid 4994] <... unlink resumed>) = 0 [pid 6514] <... memfd_create resumed>) = 3 [pid 4997] close(4 [pid 4994] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6514] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6510] <... mount resumed>) = 0 [pid 4997] rmdir("./125/file0" [pid 4996] mkdir("./126", 0777) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6510] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(3, [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6510] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4997] close(3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = 0 [pid 6510] chdir("./file0" [pid 4997] <... close resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] rmdir("./125" [pid 4996] close(3 [pid 4995] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6510] <... chdir resumed>) = 0 [pid 6510] ioctl(4, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 6510] <... ioctl resumed>) = 0 [pid 4997] mkdir("./126", 0777 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6510] close(4 [pid 4995] getdents64(4, [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 6510] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... close resumed>) = 0 [pid 6510] creat("./bus", 000 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6516 [pid 4995] rmdir("./122/file0" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... rmdir resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] getdents64(3, [pid 4997] close(3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] close(3./strace-static-x86_64: Process 6516 attached [pid 6514] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... close resumed>) = 0 [pid 6516] chdir("./126" [pid 4995] rmdir("./122" [pid 6516] <... chdir resumed>) = 0 [pid 6510] <... creat resumed>) = 4 [pid 4995] <... rmdir resumed>) = 0 [pid 6516] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6510] unlink("./bus" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6517 [pid 4995] mkdir("./123", 0777 [ 147.468755][ T6510] NILFS (loop0): recovery complete [ 147.485346][ T6515] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6516] <... prctl resumed>) = 0 [pid 6510] <... unlink resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6516] setpgid(0, 0 [pid 6510] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] lstat("./124/file0", ./strace-static-x86_64: Process 6517 attached [pid 6516] <... setpgid resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6517] chdir("./126" [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6517] <... chdir resumed>) = 0 [pid 6516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6516] <... openat resumed>) = 3 [pid 4995] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6517] <... prctl resumed>) = 0 [pid 6516] write(3, "1000", 4 [pid 4995] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6517] setpgid(0, 0 [pid 6516] <... write resumed>) = 4 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 4 [pid 6517] <... setpgid resumed>) = 0 [pid 6516] close(3 [pid 4994] fstat(4, [pid 6517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6518 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6517] <... openat resumed>) = 3 [pid 6516] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 6517] write(3, "1000", 4 [pid 6516] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6517] <... write resumed>) = 4 [pid 6516] <... symlink resumed>) = 0 [pid 4994] getdents64(4, [pid 6517] close(3 [pid 6516] memfd_create("syzkaller", 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6517] <... close resumed>) = 0 [pid 6516] <... memfd_create resumed>) = 3 [pid 4994] close(4 [pid 6517] symlink("/dev/binderfs", "./binderfs" [pid 6516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6510] <... pwritev2 resumed>) = 65007 [pid 4994] <... close resumed>) = 0 ./strace-static-x86_64: Process 6518 attached [pid 6517] <... symlink resumed>) = 0 [pid 6516] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6510] exit_group(0 [pid 4994] rmdir("./124/file0" [pid 6518] chdir("./123" [pid 6517] memfd_create("syzkaller", 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6518] <... chdir resumed>) = 0 [pid 6517] <... memfd_create resumed>) = 3 [pid 4994] getdents64(3, [pid 6518] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6518] <... prctl resumed>) = 0 [pid 6517] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] close(3 [pid 6518] setpgid(0, 0 [pid 6510] <... exit_group resumed>) = ? [pid 4994] <... close resumed>) = 0 [pid 6518] <... setpgid resumed>) = 0 [pid 4994] rmdir("./124" [pid 6518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... rmdir resumed>) = 0 [pid 6518] <... openat resumed>) = 3 [pid 4994] mkdir("./125", 0777 [pid 6518] write(3, "1000", 4 [pid 4994] <... mkdir resumed>) = 0 [pid 6518] <... write resumed>) = 4 [pid 6517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6518] close(3 [pid 4994] <... openat resumed>) = 3 [pid 6518] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6518] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6518] <... symlink resumed>) = 0 [pid 6510] +++ exited with 0 +++ [pid 4994] close(3 [pid 6518] memfd_create("syzkaller", 0 [pid 4994] <... close resumed>) = 0 [pid 6518] <... memfd_create resumed>) = 3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6510, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 6518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6516] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6514] <... write resumed>) = 2097152 [pid 4993] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6518] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6514] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6519 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, ./strace-static-x86_64: Process 6519 attached 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6519] chdir("./125" [pid 6514] <... munmap resumed>) = 0 [pid 4993] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] <... chdir resumed>) = 0 [pid 6514] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6519] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6514] <... openat resumed>) = 4 [pid 4993] lstat("./125/binderfs", [pid 6519] <... prctl resumed>) = 0 [pid 6514] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6519] setpgid(0, 0 [pid 4993] unlink("./125/binderfs" [pid 6519] <... setpgid resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 6519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] <... openat resumed>) = 3 [pid 6519] write(3, "1000", 4) = 4 [pid 6519] close(3 [pid 6518] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 6519] <... close resumed>) = 0 [pid 4993] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6519] <... symlink resumed>) = 0 [pid 4993] lstat("./125/file0", [pid 6519] memfd_create("syzkaller", 0) = 3 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6514] <... ioctl resumed>) = 0 [pid 6514] close(3 [pid 4993] fstat(4, [pid 6514] <... close resumed>) = 0 [pid 6514] mkdir("./file0", 0777 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6514] <... mkdir resumed>) = 0 [pid 6519] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6516] <... write resumed>) = 2097152 [pid 6514] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] getdents64(4, [pid 6516] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [ 147.628253][ T6514] loop5: detected capacity change from 0 to 4096 [pid 4993] rmdir("./125/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./125") = 0 [pid 4993] mkdir("./126", 0777) = 0 [pid 6516] <... munmap resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6516] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] <... openat resumed>) = 3 [pid 6516] <... openat resumed>) = 4 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6516] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6518] <... write resumed>) = 2097152 [pid 6517] <... write resumed>) = 2097152 [pid 4993] close(3 [pid 6517] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... close resumed>) = 0 [pid 6517] <... munmap resumed>) = 0 [pid 6517] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6517] ioctl(4, LOOP_SET_FD, 3 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6520 [pid 6518] munmap(0x7f46b9f9b000, 2097152) = 0 [ 147.696443][ T6514] NILFS (loop5): invalid segment: Checksum error in segment payload [ 147.707112][ T6516] loop3: detected capacity change from 0 to 4096 [ 147.722446][ T6517] loop4: detected capacity change from 0 to 4096 ./strace-static-x86_64: Process 6520 attached [pid 6516] <... ioctl resumed>) = 0 [pid 6518] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6518] ioctl(4, LOOP_SET_FD, 3 [pid 6520] chdir("./126" [pid 6516] close(3 [pid 6520] <... chdir resumed>) = 0 [pid 6516] <... close resumed>) = 0 [pid 6520] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6516] mkdir("./file0", 0777 [pid 6520] <... prctl resumed>) = 0 [pid 6517] <... ioctl resumed>) = 0 [pid 6516] <... mkdir resumed>) = 0 [pid 6517] close(3) = 0 [pid 6517] mkdir("./file0", 0777) = 0 [pid 6517] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6520] setpgid(0, 0 [pid 6519] <... write resumed>) = 2097152 [pid 6516] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6514] <... mount resumed>) = 0 [pid 6520] <... setpgid resumed>) = 0 [pid 6514] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6518] <... ioctl resumed>) = 0 [pid 6514] <... openat resumed>) = 3 [pid 6519] munmap(0x7f46b9f9b000, 2097152) = 0 [ 147.744791][ T6514] NILFS (loop5): trying rollback from an earlier position [ 147.750486][ T6518] loop2: detected capacity change from 0 to 4096 [ 147.764929][ T6514] NILFS (loop5): recovery complete [ 147.772008][ T6521] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.788833][ T6516] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6520] <... openat resumed>) = 3 [pid 6518] close(3 [pid 6514] chdir("./file0" [pid 6519] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6519] ioctl(4, LOOP_SET_FD, 3 [pid 6520] write(3, "1000", 4 [pid 6518] <... close resumed>) = 0 [pid 6514] <... chdir resumed>) = 0 [pid 6519] <... ioctl resumed>) = 0 [pid 6519] close(3) = 0 [pid 6519] mkdir("./file0", 0777 [pid 6520] <... write resumed>) = 4 [pid 6518] mkdir("./file0", 0777 [pid 6520] close(3 [pid 6514] ioctl(4, LOOP_CLR_FD [pid 6518] <... mkdir resumed>) = 0 [pid 6514] <... ioctl resumed>) = 0 [pid 6520] <... close resumed>) = 0 [pid 6520] symlink("/dev/binderfs", "./binderfs" [pid 6518] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6514] close(4 [pid 6519] <... mkdir resumed>) = 0 [pid 6519] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6520] <... symlink resumed>) = 0 [pid 6514] <... close resumed>) = 0 [pid 6514] creat("./bus", 000 [pid 6520] memfd_create("syzkaller", 0) = 3 [pid 6520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 147.797340][ T6517] NILFS (loop4): invalid segment: Checksum error in segment payload [ 147.797460][ T6516] NILFS (loop3): trying rollback from an earlier position [ 147.810396][ T6519] loop1: detected capacity change from 0 to 4096 [ 147.815998][ T6517] NILFS (loop4): trying rollback from an earlier position [ 147.829396][ T6516] NILFS (loop3): recovery complete [pid 6514] <... creat resumed>) = 4 [pid 6514] unlink("./bus") = 0 [pid 6514] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6516] <... mount resumed>) = 0 [ 147.850676][ T6518] NILFS (loop2): invalid segment: Checksum error in segment payload [ 147.868737][ T6522] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.870952][ T6519] NILFS (loop1): invalid segment: Checksum error in segment payload [ 147.893754][ T6518] NILFS (loop2): trying rollback from an earlier position [pid 6516] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6514] <... pwritev2 resumed>) = 65007 [pid 6520] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6516] <... openat resumed>) = 3 [pid 6514] exit_group(0 [pid 6516] chdir("./file0" [pid 6514] <... exit_group resumed>) = ? [pid 6516] <... chdir resumed>) = 0 [pid 6516] ioctl(4, LOOP_CLR_FD) = 0 [pid 6516] close(4 [pid 6520] <... write resumed>) = 2097152 [pid 6517] <... mount resumed>) = 0 [pid 6516] <... close resumed>) = 0 [pid 6516] creat("./bus", 000 [pid 6514] +++ exited with 0 +++ [ 147.901966][ T6517] NILFS (loop4): recovery complete [ 147.906171][ T6519] NILFS (loop1): trying rollback from an earlier position [ 147.926330][ T6518] NILFS (loop2): recovery complete [ 147.926969][ T6523] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6518] <... mount resumed>) = 0 [pid 6517] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6516] <... creat resumed>) = 4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6514, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 6517] <... openat resumed>) = 3 [pid 6517] chdir("./file0") = 0 [pid 4998] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6517] ioctl(4, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6517] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6518] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6517] close(4 [pid 6516] unlink("./bus" [pid 4998] <... openat resumed>) = 3 [pid 6518] <... openat resumed>) = 3 [pid 6517] <... close resumed>) = 0 [pid 4998] fstat(3, [pid 6518] chdir("./file0" [pid 6517] creat("./bus", 000 [pid 6516] <... unlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6518] <... chdir resumed>) = 0 [pid 6516] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] getdents64(3, [pid 6518] ioctl(4, LOOP_CLR_FD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6518] <... ioctl resumed>) = 0 [pid 4998] lstat("./126/binderfs", [pid 6518] close(4 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6518] <... close resumed>) = 0 [pid 4998] unlink("./126/binderfs" [pid 6518] creat("./bus", 000 [pid 4998] <... unlink resumed>) = 0 [pid 4998] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6520] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6520] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6516] <... pwritev2 resumed>) = 65007 [pid 6520] <... openat resumed>) = 4 [pid 6520] ioctl(4, LOOP_SET_FD, 3 [pid 6516] exit_group(0) = ? [ 147.948289][ T6524] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 147.986219][ T6519] NILFS (loop1): recovery complete [pid 6520] <... ioctl resumed>) = 0 [pid 6520] close(3) = 0 [pid 6520] mkdir("./file0", 0777) = 0 [pid 6518] <... creat resumed>) = 4 [pid 6517] <... creat resumed>) = 4 [pid 6516] +++ exited with 0 +++ [pid 6520] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6518] unlink("./bus" [pid 6517] unlink("./bus" [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6516, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=6 /* 0.06 s */} --- [pid 6518] <... unlink resumed>) = 0 [pid 6517] <... unlink resumed>) = 0 [ 147.997321][ T6520] loop0: detected capacity change from 0 to 4096 [pid 6517] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6518] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6519] <... mount resumed>) = 0 [pid 6519] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6519] chdir("./file0") = 0 [pid 4996] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] ioctl(4, LOOP_CLR_FD) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6519] close(4 [pid 4996] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6519] <... close resumed>) = 0 [pid 6518] <... pwritev2 resumed>) = 65007 [pid 6517] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6517] exit_group(0 [pid 4996] fstat(3, [pid 6519] creat("./bus", 000 [pid 6517] <... exit_group resumed>) = ? [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6518] exit_group(0) = ? [pid 4998] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] lstat("./126/file0", [pid 4996] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./126/binderfs", [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6517] +++ exited with 0 +++ [pid 4998] <... openat resumed>) = 4 [pid 4996] unlink("./126/binderfs" [pid 4998] fstat(4, [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6517, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] <... unlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 148.026688][ T6520] NILFS (loop0): invalid segment: Checksum error in segment payload [ 148.036136][ T6525] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(4, [pid 4996] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] close(4 [pid 4997] <... openat resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 4997] fstat(3, [pid 4998] rmdir("./126/file0" [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4998] getdents64(3, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6518] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4997] lstat("./126/binderfs", [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6518, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4998] rmdir("./126" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... rmdir resumed>) = 0 [pid 4997] unlink("./126/binderfs" [pid 4995] <... restart_syscall resumed>) = 0 [pid 4998] mkdir("./127", 0777 [pid 4997] <... unlink resumed>) = 0 [pid 6519] <... creat resumed>) = 4 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] unlink("./bus" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] <... unlink resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6519] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... openat resumed>) = 3 [ 148.077987][ T6520] NILFS (loop0): trying rollback from an earlier position [pid 4998] close(3 [pid 4995] fstat(3, [pid 4998] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6526 [pid 4995] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./123/binderfs") = 0 [pid 4995] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6519] <... pwritev2 resumed>) = 65007 [pid 6519] exit_group(0) = ? ./strace-static-x86_64: Process 6526 attached [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6526] chdir("./127" [pid 4996] <... openat resumed>) = 4 [pid 6526] <... chdir resumed>) = 0 [ 148.146853][ T6520] NILFS (loop0): recovery complete [pid 4996] fstat(4, [pid 6526] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6519] +++ exited with 0 +++ [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6519, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 4996] <... close resumed>) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4996] rmdir("./126/file0" [pid 4994] <... restart_syscall resumed>) = 0 [pid 6526] <... prctl resumed>) = 0 [pid 6520] <... mount resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6526] setpgid(0, 0 [pid 6520] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] getdents64(3, [pid 6526] <... setpgid resumed>) = 0 [pid 6520] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6520] chdir("./file0" [pid 4996] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6526] <... openat resumed>) = 3 [pid 6520] <... chdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6526] write(3, "1000", 4 [pid 6520] ioctl(4, LOOP_CLR_FD [pid 4996] rmdir("./126" [pid 4994] <... openat resumed>) = 3 [pid 6526] <... write resumed>) = 4 [pid 6520] <... ioctl resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] fstat(3, [pid 6526] close(3 [pid 6520] close(4 [pid 4996] mkdir("./127", 0777 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6526] <... close resumed>) = 0 [pid 6520] <... close resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] getdents64(3, [pid 6526] symlink("/dev/binderfs", "./binderfs" [pid 6520] creat("./bus", 000 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6526] <... symlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4994] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6526] memfd_create("syzkaller", 0 [pid 4997] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6526] <... memfd_create resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] lstat("./125/binderfs", [pid 6526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] lstat("./126/file0", [pid 4996] close(3 [pid 4995] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6526] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./125/binderfs" [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] lstat("./123/file0", [pid 4994] <... unlink resumed>) = 0 [pid 4997] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6528 [pid 4995] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(4, [pid 4995] <... openat resumed>) = 4 [ 148.184901][ T6527] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 4997] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6528 attached [pid 6520] <... creat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 6528] chdir("./127" [pid 6520] unlink("./bus" [pid 4997] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6528] <... chdir resumed>) = 0 [pid 6520] <... unlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 6528] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6520] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6528] <... prctl resumed>) = 0 [pid 6526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... close resumed>) = 0 [pid 4995] close(4 [pid 6528] setpgid(0, 0 [pid 4995] <... close resumed>) = 0 [pid 6528] <... setpgid resumed>) = 0 [pid 4997] rmdir("./126/file0" [pid 4995] rmdir("./123/file0" [pid 6528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6528] <... openat resumed>) = 3 [pid 4995] getdents64(3, [pid 6528] write(3, "1000", 4 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6528] <... write resumed>) = 4 [pid 4995] close(3 [pid 6528] close(3 [pid 4997] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 6528] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./123" [pid 6528] symlink("/dev/binderfs", "./binderfs" [pid 4997] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 6528] <... symlink resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] mkdir("./124", 0777 [pid 6528] memfd_create("syzkaller", 0 [pid 4997] rmdir("./126" [pid 4995] <... mkdir resumed>) = 0 [pid 6528] <... memfd_create resumed>) = 3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6520] <... pwritev2 resumed>) = 65007 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6528] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6520] exit_group(0 [pid 4997] mkdir("./127", 0777 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6520] <... exit_group resumed>) = ? [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... mkdir resumed>) = 0 [pid 4995] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6529 [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6530 ./strace-static-x86_64: Process 6529 attached [pid 6520] +++ exited with 0 +++ [pid 4994] <... umount2 resumed>) = 0 [pid 6529] chdir("./124" [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6520, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6529] <... chdir resumed>) = 0 [pid 6529] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6530 attached [pid 6529] <... prctl resumed>) = 0 [pid 4994] lstat("./125/file0", [pid 6529] setpgid(0, 0 [pid 4993] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6530] chdir("./127" [pid 6529] <... setpgid resumed>) = 0 [pid 6528] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6530] <... chdir resumed>) = 0 [pid 6529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6530] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6529] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6530] <... prctl resumed>) = 0 [pid 6529] write(3, "1000", 4 [pid 4994] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 6529] <... write resumed>) = 4 [pid 6530] setpgid(0, 0 [pid 6529] close(3 [pid 4994] <... openat resumed>) = 4 [pid 4993] fstat(3, [pid 6530] <... setpgid resumed>) = 0 [pid 6529] <... close resumed>) = 0 [pid 4994] fstat(4, [pid 6530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6529] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6530] <... openat resumed>) = 3 [pid 6529] <... symlink resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 6530] write(3, "1000", 4 [pid 6529] memfd_create("syzkaller", 0 [pid 4994] getdents64(4, [pid 6530] <... write resumed>) = 4 [pid 6529] <... memfd_create resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6530] close(3 [pid 6529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6526] <... write resumed>) = 2097152 [pid 4994] getdents64(4, [pid 4993] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6530] <... close resumed>) = 0 [pid 6529] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6526] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6530] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6526] <... munmap resumed>) = 0 [pid 4994] close(4 [pid 4993] lstat("./126/binderfs", [pid 6526] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6530] memfd_create("syzkaller", 0 [pid 6526] <... openat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6530] <... memfd_create resumed>) = 3 [pid 6526] ioctl(4, LOOP_SET_FD, 3 [pid 4994] rmdir("./125/file0" [pid 4993] unlink("./126/binderfs" [pid 6530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 6526] <... ioctl resumed>) = 0 [pid 6528] <... write resumed>) = 2097152 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6528] munmap(0x7f46b9f9b000, 2097152 [pid 6526] close(3 [pid 4994] close(3 [pid 6528] <... munmap resumed>) = 0 [pid 6530] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6528] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6526] <... close resumed>) = 0 [pid 6529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... close resumed>) = 0 [pid 6528] <... openat resumed>) = 4 [pid 6526] mkdir("./file0", 0777 [pid 4994] rmdir("./125" [pid 6526] <... mkdir resumed>) = 0 [pid 6528] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... rmdir resumed>) = 0 [ 148.349300][ T6526] loop5: detected capacity change from 0 to 4096 [pid 6528] <... ioctl resumed>) = 0 [pid 6526] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] mkdir("./126", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] getdents64(4, [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6528] close(3 [pid 4994] close(3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6530] <... write resumed>) = 2097152 [pid 6529] <... write resumed>) = 2097152 [pid 6528] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./126/file0") = 0 [pid 4993] getdents64(3, [pid 6530] munmap(0x7f46b9f9b000, 2097152 [pid 6529] munmap(0x7f46b9f9b000, 2097152 [pid 6528] mkdir("./file0", 0777 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6530] <... munmap resumed>) = 0 [pid 6529] <... munmap resumed>) = 0 [pid 6528] <... mkdir resumed>) = 0 [pid 4993] close(3 [pid 6530] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6529] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6528] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... close resumed>) = 0 [pid 6530] <... openat resumed>) = 4 [pid 6529] <... openat resumed>) = 4 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6531 [pid 4993] rmdir("./126" [pid 6530] ioctl(4, LOOP_SET_FD, 3 [ 148.396578][ T6528] loop3: detected capacity change from 0 to 4096 [ 148.411124][ T6526] NILFS (loop5): invalid segment: Checksum error in segment payload [ 148.436540][ T6526] NILFS (loop5): trying rollback from an earlier position [pid 6529] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./127", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 6530] <... ioctl resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6532 ./strace-static-x86_64: Process 6531 attached [pid 6531] chdir("./126" [pid 6529] <... ioctl resumed>) = 0 [pid 6531] <... chdir resumed>) = 0 [pid 6529] close(3 [pid 6531] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6529] <... close resumed>) = 0 [pid 6531] <... prctl resumed>) = 0 [pid 6531] setpgid(0, 0./strace-static-x86_64: Process 6532 attached ) = 0 [pid 6532] chdir("./127" [pid 6531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6532] <... chdir resumed>) = 0 [pid 6531] <... openat resumed>) = 3 [pid 6532] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6531] write(3, "1000", 4 [pid 6532] <... prctl resumed>) = 0 [pid 6531] <... write resumed>) = 4 [pid 6532] setpgid(0, 0 [pid 6531] close(3 [pid 6530] close(3 [pid 6529] mkdir("./file0", 0777 [pid 6532] <... setpgid resumed>) = 0 [pid 6531] <... close resumed>) = 0 [pid 6532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6531] symlink("/dev/binderfs", "./binderfs" [pid 6530] <... close resumed>) = 0 [pid 6529] <... mkdir resumed>) = 0 [pid 6532] <... openat resumed>) = 3 [pid 6531] <... symlink resumed>) = 0 [pid 6532] write(3, "1000", 4 [pid 6531] memfd_create("syzkaller", 0 [pid 6532] <... write resumed>) = 4 [pid 6531] <... memfd_create resumed>) = 3 [pid 6532] close(3 [pid 6531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6532] <... close resumed>) = 0 [pid 6531] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6530] mkdir("./file0", 0777 [pid 6529] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6532] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6532] memfd_create("syzkaller", 0) = 3 [pid 6532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6530] <... mkdir resumed>) = 0 [ 148.458304][ T6528] NILFS (loop3): invalid segment: Checksum error in segment payload [ 148.466670][ T6530] loop4: detected capacity change from 0 to 4096 [ 148.474428][ T6529] loop2: detected capacity change from 0 to 4096 [ 148.483048][ T6526] NILFS (loop5): recovery complete [ 148.490205][ T6528] NILFS (loop3): trying rollback from an earlier position [ 148.498034][ T6533] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6530] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6526] <... mount resumed>) = 0 [pid 6526] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6526] chdir("./file0") = 0 [pid 6526] ioctl(4, LOOP_CLR_FD) = 0 [pid 6526] close(4) = 0 [pid 6526] creat("./bus", 000) = 4 [ 148.514335][ T6529] NILFS (loop2): invalid segment: Checksum error in segment payload [ 148.523712][ T6529] NILFS (loop2): trying rollback from an earlier position [pid 6526] unlink("./bus" [pid 6532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6526] <... unlink resumed>) = 0 [pid 6526] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6532] <... write resumed>) = 2097152 [pid 6532] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6532] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 148.555549][ T6528] NILFS (loop3): recovery complete [ 148.562245][ T6529] NILFS (loop2): recovery complete [ 148.583618][ T6530] NILFS (loop4): invalid segment: Checksum error in segment payload [ 148.594435][ T6534] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6532] ioctl(4, LOOP_SET_FD, 3 [pid 6526] <... pwritev2 resumed>) = 65007 [pid 6528] <... mount resumed>) = 0 [pid 6526] exit_group(0 [pid 6529] <... mount resumed>) = 0 [pid 6528] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6526] <... exit_group resumed>) = ? [pid 6529] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6528] <... openat resumed>) = 3 [pid 6529] <... openat resumed>) = 3 [pid 6528] chdir("./file0" [pid 6529] chdir("./file0" [pid 6528] <... chdir resumed>) = 0 [pid 6529] <... chdir resumed>) = 0 [pid 6528] ioctl(4, LOOP_CLR_FD [pid 6529] ioctl(4, LOOP_CLR_FD [pid 6528] <... ioctl resumed>) = 0 [pid 6529] <... ioctl resumed>) = 0 [pid 6528] close(4 [pid 6529] close(4 [pid 6528] <... close resumed>) = 0 [pid 6529] <... close resumed>) = 0 [pid 6528] creat("./bus", 000 [pid 6529] creat("./bus", 000 [pid 6526] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6526, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4998] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./127/binderfs") = 0 [pid 4998] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6532] <... ioctl resumed>) = 0 [pid 6532] close(3) = 0 [pid 6532] mkdir("./file0", 0777) = 0 [pid 6532] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6531] <... write resumed>) = 2097152 [pid 6529] <... creat resumed>) = 4 [pid 6528] <... creat resumed>) = 4 [pid 6531] munmap(0x7f46b9f9b000, 2097152 [pid 6529] unlink("./bus" [ 148.605764][ T6532] loop0: detected capacity change from 0 to 4096 [ 148.606260][ T6535] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 148.627693][ T6530] NILFS (loop4): trying rollback from an earlier position [pid 6528] unlink("./bus" [pid 6531] <... munmap resumed>) = 0 [pid 6528] <... unlink resumed>) = 0 [pid 6528] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6531] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6529] <... unlink resumed>) = 0 [pid 6531] <... openat resumed>) = 4 [pid 6529] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6531] ioctl(4, LOOP_SET_FD, 3 [pid 6528] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = 0 [pid 6528] exit_group(0) = ? [pid 4998] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 6528] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6531] <... ioctl resumed>) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./127/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./127") = 0 [pid 4998] mkdir("./128", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6529] <... pwritev2 resumed>) = 65007 [pid 6531] close(3 [pid 6529] exit_group(0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6528, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6529] <... exit_group resumed>) = ? [pid 6529] +++ exited with 0 +++ [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6536 ./strace-static-x86_64: Process 6536 attached [pid 6536] chdir("./128") = 0 [pid 6536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6536] setpgid(0, 0) = 0 [pid 6531] <... close resumed>) = 0 [pid 6531] mkdir("./file0", 0777 [pid 6536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6531] <... mkdir resumed>) = 0 [pid 4996] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6529, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6531] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6536] write(3, "1000", 4 [pid 4995] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6536] <... write resumed>) = 4 [pid 4996] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6536] close(3) = 0 [pid 6536] symlink("/dev/binderfs", "./binderfs" [pid 4996] fstat(3, [pid 4995] <... openat resumed>) = 3 [pid 6536] <... symlink resumed>) = 0 [ 148.701799][ T6532] NILFS (loop0): invalid segment: Checksum error in segment payload [ 148.712064][ T6531] loop1: detected capacity change from 0 to 4096 [ 148.722437][ T6530] NILFS (loop4): recovery complete [ 148.724920][ T6532] NILFS (loop0): trying rollback from an earlier position [pid 4995] fstat(3, [pid 6536] memfd_create("syzkaller", 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6536] <... memfd_create resumed>) = 3 [pid 6536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6530] <... mount resumed>) = 0 [pid 4996] getdents64(3, [pid 6530] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] getdents64(3, [pid 6530] <... openat resumed>) = 3 [pid 6530] chdir("./file0" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6530] <... chdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6530] ioctl(4, LOOP_CLR_FD [pid 4995] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6530] <... ioctl resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6530] close(4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./124/binderfs", [pid 6530] <... close resumed>) = 0 [pid 4996] lstat("./127/binderfs", [pid 6530] creat("./bus", 000 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./127/binderfs" [pid 4995] unlink("./124/binderfs" [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4996] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6530] <... creat resumed>) = 4 [pid 6530] unlink("./bus") = 0 [ 148.750650][ T6537] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 148.759096][ T6531] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6530] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6530] <... pwritev2 resumed>) = 65007 [pid 6530] exit_group(0) = ? [pid 4996] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./127/file0", [pid 4995] lstat("./124/file0", [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6530] +++ exited with 0 +++ [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6530, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 148.821166][ T6531] NILFS (loop1): trying rollback from an earlier position [ 148.847008][ T6532] NILFS (loop0): recovery complete [pid 4997] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... openat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./127/binderfs" [pid 4996] fstat(4, [pid 4995] <... openat resumed>) = 4 [pid 4997] <... unlink resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 4997] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6536] <... write resumed>) = 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 6536] munmap(0x7f46b9f9b000, 2097152 [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6536] <... munmap resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 6536] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6536] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4995] close(4 [pid 6536] ioctl(4, LOOP_SET_FD, 3 [pid 4996] rmdir("./127/file0" [pid 4995] <... close resumed>) = 0 [pid 6532] <... mount resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] rmdir("./124/file0" [pid 6532] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6531] <... mount resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(3, [pid 4996] close(3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] close(3 [pid 4996] rmdir("./127" [pid 4995] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] rmdir("./124" [pid 4996] mkdir("./128", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] mkdir("./125", 0777 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... mkdir resumed>) = 0 [pid 6532] <... openat resumed>) = 3 [pid 6531] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6532] chdir("./file0" [pid 6531] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 3 [pid 6532] <... chdir resumed>) = 0 [pid 6531] chdir("./file0" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6536] <... ioctl resumed>) = 0 [pid 6532] ioctl(4, LOOP_CLR_FD [pid 6531] <... chdir resumed>) = 0 [pid 4996] close(3 [pid 6536] close(3 [pid 6532] <... ioctl resumed>) = 0 [pid 6531] ioctl(4, LOOP_CLR_FD [pid 6536] <... close resumed>) = 0 [pid 6532] close(4 [pid 6531] <... ioctl resumed>) = 0 [pid 6536] mkdir("./file0", 0777 [pid 6532] <... close resumed>) = 0 [pid 6531] close(4 [pid 6536] <... mkdir resumed>) = 0 [pid 6532] creat("./bus", 000 [pid 6531] <... close resumed>) = 0 [pid 6536] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6531] creat("./bus", 000 [pid 4996] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6532] <... creat resumed>) = 4 [pid 6531] <... creat resumed>) = 4 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] close(3 [pid 6532] unlink("./bus" [pid 6531] unlink("./bus") = 0 [pid 4995] <... close resumed>) = 0 [pid 6531] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6532] <... unlink resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6540 [ 148.871544][ T6538] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 148.887074][ T6531] NILFS (loop1): recovery complete [ 148.900729][ T6536] loop5: detected capacity change from 0 to 4096 [ 148.910973][ T6539] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6532] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6541 attached ./strace-static-x86_64: Process 6540 attached [pid 6541] chdir("./125" [pid 6540] chdir("./128" [pid 4997] <... openat resumed>) = 4 [pid 4997] fstat(4, [pid 6531] <... pwritev2 resumed>) = 65007 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6540] <... chdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6541 [pid 6531] exit_group(0 [pid 6540] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6531] <... exit_group resumed>) = ? [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6541] <... chdir resumed>) = 0 [pid 6540] <... prctl resumed>) = 0 [pid 6541] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6540] setpgid(0, 0 [pid 6532] <... pwritev2 resumed>) = 65007 [pid 4997] getdents64(4, [pid 6541] <... prctl resumed>) = 0 [pid 6540] <... setpgid resumed>) = 0 [pid 6532] exit_group(0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6541] setpgid(0, 0 [pid 6540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6532] <... exit_group resumed>) = ? [pid 4997] close(4 [pid 6541] <... setpgid resumed>) = 0 [pid 6540] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 6541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6540] write(3, "1000", 4 [pid 4997] rmdir("./127/file0") = 0 [pid 4997] getdents64(3, [pid 6541] <... openat resumed>) = 3 [pid 6540] <... write resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6541] write(3, "1000", 4 [pid 6540] close(3 [pid 4997] close(3 [pid 6541] <... write resumed>) = 4 [pid 6540] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6541] close(3 [pid 6540] symlink("/dev/binderfs", "./binderfs" [pid 4997] rmdir("./127" [pid 6541] <... close resumed>) = 0 [pid 6540] <... symlink resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6541] symlink("/dev/binderfs", "./binderfs" [pid 6540] memfd_create("syzkaller", 0 [pid 4997] mkdir("./128", 0777 [pid 6541] <... symlink resumed>) = 0 [pid 6540] <... memfd_create resumed>) = 3 [pid 6532] +++ exited with 0 +++ [pid 4997] <... mkdir resumed>) = 0 [pid 6541] memfd_create("syzkaller", 0 [pid 6540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6541] <... memfd_create resumed>) = 3 [pid 6540] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6531] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 3 [pid 6541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6542 ./strace-static-x86_64: Process 6542 attached [pid 6542] chdir("./128") = 0 [pid 6542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6542] setpgid(0, 0) = 0 [pid 6542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6531, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6532, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6541] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6542] <... openat resumed>) = 3 [pid 6542] write(3, "1000", 4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6542] <... write resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 4994] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 6542] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(3, [pid 6542] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] fstat(3, [pid 4993] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 4993] lstat("./127/binderfs", [pid 6542] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6542] <... symlink resumed>) = 0 [pid 4994] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./127/binderfs" [pid 6542] memfd_create("syzkaller", 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6542] <... memfd_create resumed>) = 3 [pid 4994] lstat("./126/binderfs", [pid 4993] <... unlink resumed>) = 0 [pid 6542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 148.949806][ T6536] NILFS (loop5): invalid segment: Checksum error in segment payload [ 148.975536][ T6536] NILFS (loop5): trying rollback from an earlier position [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6540] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] unlink("./126/binderfs") = 0 [pid 4994] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, [pid 6542] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 149.034904][ T6536] NILFS (loop5): recovery complete [pid 6536] <... mount resumed>) = 0 [pid 4993] getdents64(4, [pid 6536] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6536] <... openat resumed>) = 3 [pid 4994] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 6536] chdir("./file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6536] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 6536] ioctl(4, LOOP_CLR_FD) = 0 [pid 4994] lstat("./126/file0", [pid 4993] <... close resumed>) = 0 [pid 6536] close(4) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] rmdir("./127/file0" [pid 6541] <... write resumed>) = 2097152 [pid 6536] creat("./bus", 000 [pid 4994] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6541] munmap(0x7f46b9f9b000, 2097152 [pid 6540] <... write resumed>) = 2097152 [pid 4994] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(3, [pid 4994] <... openat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] fstat(4, [pid 4993] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 4993] rmdir("./127" [pid 6541] <... munmap resumed>) = 0 [pid 6540] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6541] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6540] <... munmap resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6541] <... openat resumed>) = 4 [pid 6540] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] getdents64(4, [pid 4993] mkdir("./128", 0777 [pid 6541] ioctl(4, LOOP_SET_FD, 3 [pid 6540] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 149.073196][ T6543] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] <... mkdir resumed>) = 0 [pid 6541] <... ioctl resumed>) = 0 [pid 6540] ioctl(4, LOOP_SET_FD, 3 [pid 4994] close(4 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6541] close(3 [pid 6540] <... ioctl resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6541] <... close resumed>) = 0 [pid 4994] rmdir("./126/file0" [pid 4993] <... openat resumed>) = 3 [pid 6541] mkdir("./file0", 0777 [pid 6540] close(3 [pid 6541] <... mkdir resumed>) = 0 [pid 6536] <... creat resumed>) = 4 [pid 6540] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6536] unlink("./bus" [pid 4994] getdents64(3, [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6541] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6540] mkdir("./file0", 0777 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 4994] close(3 [pid 4993] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] rmdir("./126") = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6544 [pid 4994] mkdir("./127", 0777) = 0 [pid 6536] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6536] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6544 attached [pid 6544] chdir("./128") = 0 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6540] <... mkdir resumed>) = 0 [pid 6544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6540] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6545 [ 149.116772][ T6541] loop2: detected capacity change from 0 to 4096 [ 149.125032][ T6540] loop3: detected capacity change from 0 to 4096 ./strace-static-x86_64: Process 6545 attached [pid 6536] <... pwritev2 resumed>) = 65007 [pid 6544] setpgid(0, 0 [pid 6545] chdir("./127" [pid 6544] <... setpgid resumed>) = 0 [pid 6536] exit_group(0 [pid 6544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6542] <... write resumed>) = 2097152 [pid 6544] <... openat resumed>) = 3 [pid 6544] write(3, "1000", 4) = 4 [pid 6544] close(3) = 0 [pid 6544] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6544] memfd_create("syzkaller", 0) = 3 [pid 6544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6545] <... chdir resumed>) = 0 [pid 6542] munmap(0x7f46b9f9b000, 2097152 [pid 6536] <... exit_group resumed>) = ? [pid 6542] <... munmap resumed>) = 0 [pid 6545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6536] +++ exited with 0 +++ [pid 6545] setpgid(0, 0 [pid 6542] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6536, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6545] <... setpgid resumed>) = 0 [pid 6542] <... openat resumed>) = 4 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 6545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6542] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... restart_syscall resumed>) = 0 [pid 6545] <... openat resumed>) = 3 [ 149.188878][ T6541] NILFS (loop2): invalid segment: Checksum error in segment payload [ 149.198839][ T6540] NILFS (loop3): invalid segment: Checksum error in segment payload [ 149.218746][ T6541] NILFS (loop2): trying rollback from an earlier position [ 149.219319][ T6542] loop4: detected capacity change from 0 to 4096 [pid 4998] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6545] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 3 [pid 6545] <... write resumed>) = 4 [pid 4998] fstat(3, [pid 6545] close(3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6545] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 6545] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6545] <... symlink resumed>) = 0 [pid 4998] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6545] memfd_create("syzkaller", 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6545] <... memfd_create resumed>) = 3 [pid 4998] lstat("./128/binderfs", [pid 6545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6545] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] unlink("./128/binderfs") = 0 [pid 4998] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6544] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6542] <... ioctl resumed>) = 0 [ 149.228474][ T6540] NILFS (loop3): trying rollback from an earlier position [pid 6542] close(3) = 0 [pid 6542] mkdir("./file0", 0777) = 0 [pid 6542] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 149.273031][ T6541] NILFS (loop2): recovery complete [pid 6545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./128/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./128") = 0 [pid 4998] mkdir("./129", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 6545] <... write resumed>) = 2097152 [pid 6541] <... mount resumed>) = 0 [pid 6540] <... mount resumed>) = 0 [ 149.311128][ T6540] NILFS (loop3): recovery complete [ 149.315172][ T6542] NILFS (loop4): invalid segment: Checksum error in segment payload [ 149.338061][ T6546] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.348644][ T6547] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6541] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6540] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6540] chdir("./file0" [pid 6545] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6548 [pid 6540] <... chdir resumed>) = 0 [pid 6540] ioctl(4, LOOP_CLR_FD) = 0 [pid 6540] close(4./strace-static-x86_64: Process 6548 attached [pid 6545] <... munmap resumed>) = 0 [pid 6544] <... write resumed>) = 2097152 [pid 6541] <... openat resumed>) = 3 [pid 6540] <... close resumed>) = 0 [pid 6548] chdir("./129" [pid 6545] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6541] chdir("./file0" [pid 6540] creat("./bus", 000 [pid 6548] <... chdir resumed>) = 0 [pid 6545] <... openat resumed>) = 4 [pid 6541] <... chdir resumed>) = 0 [pid 6540] <... creat resumed>) = 4 [pid 6548] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6545] ioctl(4, LOOP_SET_FD, 3 [pid 6541] ioctl(4, LOOP_CLR_FD [pid 6540] unlink("./bus" [pid 6548] <... prctl resumed>) = 0 [pid 6541] <... ioctl resumed>) = 0 [pid 6540] <... unlink resumed>) = 0 [pid 6548] setpgid(0, 0 [pid 6541] close(4 [pid 6540] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6548] <... setpgid resumed>) = 0 [pid 6541] <... close resumed>) = 0 [ 149.348718][ T6542] NILFS (loop4): trying rollback from an earlier position [ 149.357367][ T6542] NILFS (loop4): recovery complete [ 149.388589][ T6545] loop1: detected capacity change from 0 to 4096 [pid 6548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6542] <... mount resumed>) = 0 [pid 6541] creat("./bus", 000 [pid 6548] <... openat resumed>) = 3 [pid 6541] <... creat resumed>) = 4 [pid 6548] write(3, "1000", 4 [pid 6541] unlink("./bus" [pid 6548] <... write resumed>) = 4 [pid 6541] <... unlink resumed>) = 0 [pid 6548] close(3 [pid 6541] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6548] <... close resumed>) = 0 [pid 6545] <... ioctl resumed>) = 0 [pid 6544] munmap(0x7f46b9f9b000, 2097152 [pid 6542] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6548] symlink("/dev/binderfs", "./binderfs" [pid 6545] close(3 [pid 6544] <... munmap resumed>) = 0 [pid 6542] <... openat resumed>) = 3 [pid 6540] <... pwritev2 resumed>) = 65007 [pid 6548] <... symlink resumed>) = 0 [pid 6545] <... close resumed>) = 0 [pid 6544] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6542] chdir("./file0" [pid 6540] exit_group(0 [pid 6548] memfd_create("syzkaller", 0 [pid 6545] mkdir("./file0", 0777 [pid 6544] <... openat resumed>) = 4 [pid 6542] <... chdir resumed>) = 0 [pid 6548] <... memfd_create resumed>) = 3 [pid 6545] <... mkdir resumed>) = 0 [ 149.406028][ T6549] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6544] ioctl(4, LOOP_SET_FD, 3 [pid 6542] ioctl(4, LOOP_CLR_FD [pid 6540] <... exit_group resumed>) = ? [pid 6548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6545] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6544] <... ioctl resumed>) = 0 [pid 6542] <... ioctl resumed>) = 0 [pid 6541] <... pwritev2 resumed>) = 65007 [pid 6548] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6544] close(3 [pid 6542] close(4 [pid 6541] exit_group(0 [pid 6544] <... close resumed>) = 0 [pid 6542] <... close resumed>) = 0 [pid 6541] <... exit_group resumed>) = ? [pid 6544] mkdir("./file0", 0777) = 0 [pid 6542] creat("./bus", 000 [pid 6544] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6542] <... creat resumed>) = 4 [pid 6542] unlink("./bus") = 0 [ 149.442766][ T6544] loop0: detected capacity change from 0 to 4096 [ 149.471401][ T6544] NILFS (loop0): invalid segment: Checksum error in segment payload [ 149.485218][ T6545] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6542] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6541] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6541, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 4995] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./125/binderfs") = 0 [pid 4995] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6542] <... pwritev2 resumed>) = 65007 [pid 6540] +++ exited with 0 +++ [pid 6542] exit_group(0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6540, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6542] <... exit_group resumed>) = ? [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 149.490034][ T6544] NILFS (loop0): trying rollback from an earlier position [ 149.494453][ T6545] NILFS (loop1): trying rollback from an earlier position [pid 6548] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6542] +++ exited with 0 +++ [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./128/binderfs") = 0 [pid 4996] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6542, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6548] <... write resumed>) = 2097152 [pid 4997] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6548] munmap(0x7f46b9f9b000, 2097152 [pid 4997] lstat("./128/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] unlink("./128/binderfs") = 0 [pid 4995] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 149.553204][ T6544] NILFS (loop0): recovery complete [pid 4995] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6548] <... munmap resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6548] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] close(4) = 0 [pid 6548] <... openat resumed>) = 4 [pid 4995] rmdir("./125/file0" [pid 6548] ioctl(4, LOOP_SET_FD, 3 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 6548] <... ioctl resumed>) = 0 [pid 6544] <... mount resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6544] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6544] chdir("./file0") = 0 [pid 6544] ioctl(4, LOOP_CLR_FD) = 0 [pid 6544] close(4 [pid 6548] close(3 [pid 6544] <... close resumed>) = 0 [pid 4997] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./125" [pid 6548] <... close resumed>) = 0 [pid 6544] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... rmdir resumed>) = 0 [pid 6548] mkdir("./file0", 0777 [pid 4997] lstat("./128/file0", [pid 4996] lstat("./128/file0", [ 149.606956][ T6548] loop5: detected capacity change from 0 to 4096 [ 149.614039][ T6550] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.626845][ T6545] NILFS (loop1): recovery complete [pid 4995] mkdir("./126", 0777 [pid 6548] <... mkdir resumed>) = 0 [pid 6544] <... creat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6548] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4997] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 4 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] fstat(4, [pid 4996] fstat(4, [pid 4995] close(3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6544] unlink("./bus" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 6552 attached [pid 4997] getdents64(4, [pid 6552] chdir("./126") = 0 [pid 6552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6552] setpgid(0, 0) = 0 [pid 6552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6552] write(3, "1000", 4) = 4 [pid 6552] close(3) = 0 [pid 6552] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6552] memfd_create("syzkaller", 0) = 3 [pid 6552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6545] <... mount resumed>) = 0 [pid 6544] <... unlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(4, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6552 [pid 6545] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6544] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] close(4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6545] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 6545] chdir("./file0" [pid 4996] close(4 [pid 6545] <... chdir resumed>) = 0 [pid 4997] rmdir("./128/file0" [pid 4996] <... close resumed>) = 0 [pid 6545] ioctl(4, LOOP_CLR_FD [pid 4996] rmdir("./128/file0" [pid 4997] <... rmdir resumed>) = 0 [pid 6545] <... ioctl resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] <... rmdir resumed>) = 0 [pid 6545] close(4 [pid 6552] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6545] <... close resumed>) = 0 [ 149.651813][ T6551] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 149.668256][ T6548] NILFS (loop5): invalid segment: Checksum error in segment payload [ 149.688963][ T6548] NILFS (loop5): trying rollback from an earlier position [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(3, [pid 6545] creat("./bus", 000 [pid 6544] <... pwritev2 resumed>) = 65007 [pid 4997] close(3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 6544] exit_group(0 [pid 4997] rmdir("./128" [pid 6545] <... creat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 6548] <... mount resumed>) = 0 [pid 6545] unlink("./bus" [pid 6544] <... exit_group resumed>) = ? [pid 4997] <... rmdir resumed>) = 0 [pid 4996] rmdir("./128" [pid 4997] mkdir("./129", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] mkdir("./129", 0777 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... mkdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4997] close(3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6554 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6555 ./strace-static-x86_64: Process 6554 attached [pid 6545] <... unlink resumed>) = 0 [pid 6545] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6548] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6548] chdir("./file0"./strace-static-x86_64: Process 6555 attached [pid 6554] chdir("./129" [pid 6555] chdir("./129" [pid 6554] <... chdir resumed>) = 0 [pid 6555] <... chdir resumed>) = 0 [pid 6554] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6555] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6554] <... prctl resumed>) = 0 [pid 6555] <... prctl resumed>) = 0 [pid 6554] setpgid(0, 0 [pid 6555] setpgid(0, 0 [pid 6554] <... setpgid resumed>) = 0 [pid 6555] <... setpgid resumed>) = 0 [pid 6554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6548] <... chdir resumed>) = 0 [pid 6544] +++ exited with 0 +++ [pid 6555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6554] <... openat resumed>) = 3 [pid 6552] <... write resumed>) = 2097152 [pid 6548] ioctl(4, LOOP_CLR_FD [pid 6545] <... pwritev2 resumed>) = 65007 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6544, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6555] <... openat resumed>) = 3 [pid 6554] write(3, "1000", 4 [pid 6548] <... ioctl resumed>) = 0 [pid 6545] exit_group(0 [pid 6555] write(3, "1000", 4 [pid 6554] <... write resumed>) = 4 [pid 6548] close(4 [pid 6545] <... exit_group resumed>) = ? [pid 6555] <... write resumed>) = 4 [pid 6554] close(3 [pid 6548] <... close resumed>) = 0 [pid 6555] close(3 [pid 6554] <... close resumed>) = 0 [pid 6548] creat("./bus", 000 [pid 6555] <... close resumed>) = 0 [pid 6554] symlink("/dev/binderfs", "./binderfs" [pid 6555] symlink("/dev/binderfs", "./binderfs" [pid 6554] <... symlink resumed>) = 0 [pid 6555] <... symlink resumed>) = 0 [pid 6554] memfd_create("syzkaller", 0 [pid 6548] <... creat resumed>) = 4 [pid 6555] memfd_create("syzkaller", 0 [pid 6554] <... memfd_create resumed>) = 3 [pid 6555] <... memfd_create resumed>) = 3 [pid 6554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6554] <... mmap resumed>) = 0x7f46b9f9b000 [ 149.716273][ T6548] NILFS (loop5): recovery complete [ 149.731211][ T6553] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6555] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6548] unlink("./bus" [pid 4993] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6548] <... unlink resumed>) = 0 [pid 6545] +++ exited with 0 +++ [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6548] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6552] munmap(0x7f46b9f9b000, 2097152 [pid 6555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6554] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6545, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] <... openat resumed>) = 3 [pid 4994] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(3, [pid 6552] <... munmap resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] fstat(3, [pid 4993] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6552] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] getdents64(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6552] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] lstat("./128/binderfs", [pid 6552] ioctl(4, LOOP_SET_FD, 3 [pid 6548] <... pwritev2 resumed>) = 65007 [pid 4994] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6552] <... ioctl resumed>) = 0 [pid 6548] exit_group(0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] unlink("./128/binderfs" [pid 6548] <... exit_group resumed>) = ? [pid 4994] lstat("./127/binderfs", [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6548] +++ exited with 0 +++ [pid 4994] unlink("./127/binderfs" [pid 4993] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6552] close(3 [pid 4994] <... unlink resumed>) = 0 [pid 6554] <... write resumed>) = 2097152 [pid 6554] munmap(0x7f46b9f9b000, 2097152 [pid 6552] <... close resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6548, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=8 /* 0.08 s */} --- [pid 4994] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6554] <... munmap resumed>) = 0 [pid 6552] mkdir("./file0", 0777 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... umount2 resumed>) = 0 [pid 6554] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6552] <... mkdir resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 6554] <... openat resumed>) = 4 [pid 6554] ioctl(4, LOOP_SET_FD, 3 [ 149.827262][ T6552] loop2: detected capacity change from 0 to 4096 [pid 6552] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, [pid 6554] <... ioctl resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4998] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 6555] <... write resumed>) = 2097152 [pid 6554] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] rmdir("./128/file0" [pid 4998] <... openat resumed>) = 3 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4998] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] close(3 [pid 4998] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] rmdir("./128" [pid 4998] lstat("./129/binderfs", [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6554] <... close resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] mkdir("./129", 0777 [pid 6554] mkdir("./file0", 0777 [pid 4998] unlink("./129/binderfs" [pid 6554] <... mkdir resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 6554] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6556 [ 149.877066][ T6554] loop4: detected capacity change from 0 to 4096 [ 149.889467][ T6552] NILFS (loop2): invalid segment: Checksum error in segment payload [ 149.914528][ T6552] NILFS (loop2): trying rollback from an earlier position [pid 4994] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./127/file0", [pid 6555] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6556 attached [pid 4994] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6556] chdir("./129" [pid 6555] <... munmap resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6556] <... chdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6556] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6555] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... openat resumed>) = 4 [pid 6556] <... prctl resumed>) = 0 [pid 6555] <... openat resumed>) = 4 [pid 4994] fstat(4, [pid 6556] setpgid(0, 0 [pid 6555] ioctl(4, LOOP_SET_FD, 3 [pid 6556] <... setpgid resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6555] <... ioctl resumed>) = 0 [pid 6556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 6556] <... openat resumed>) = 3 [pid 6555] close(3) = 0 [pid 6555] mkdir("./file0", 0777) = 0 [pid 6555] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6556] write(3, "1000", 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6556] <... write resumed>) = 4 [pid 4998] lstat("./129/file0", [pid 4994] getdents64(4, [pid 6556] close(3) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6556] symlink("/dev/binderfs", "./binderfs" [pid 4998] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(4 [pid 6556] <... symlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6556] memfd_create("syzkaller", 0 [pid 4998] <... openat resumed>) = 4 [pid 4994] rmdir("./127/file0" [pid 6556] <... memfd_create resumed>) = 3 [pid 4998] fstat(4, [pid 6556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 149.936552][ T6554] NILFS (loop4): invalid segment: Checksum error in segment payload [ 149.957301][ T6555] loop3: detected capacity change from 0 to 4096 [ 149.966576][ T6554] NILFS (loop4): trying rollback from an earlier position [ 149.971788][ T6552] NILFS (loop2): recovery complete [pid 4994] <... rmdir resumed>) = 0 [pid 6556] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] getdents64(4, [pid 4994] getdents64(3, [pid 6556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6552] <... mount resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6552] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6552] chdir("./file0") = 0 [pid 6552] ioctl(4, LOOP_CLR_FD) = 0 [pid 6552] close(4) = 0 [pid 4998] getdents64(4, [pid 4994] close(3 [pid 6552] creat("./bus", 000 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... close resumed>) = 0 [pid 4998] close(4 [pid 4994] rmdir("./127" [pid 4998] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4998] rmdir("./129/file0") = 0 [pid 4994] mkdir("./128", 0777 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 149.989404][ T6555] NILFS (loop3): invalid segment: Checksum error in segment payload [ 149.993271][ T6554] NILFS (loop4): recovery complete [ 149.999088][ T6555] NILFS (loop3): trying rollback from an earlier position [ 150.010928][ T6557] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] <... mkdir resumed>) = 0 [pid 6556] <... write resumed>) = 2097152 [pid 6554] <... mount resumed>) = 0 [pid 4998] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6554] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6554] <... openat resumed>) = 3 [pid 4998] rmdir("./129" [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6554] chdir("./file0" [pid 4998] <... rmdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6554] <... chdir resumed>) = 0 [pid 4998] mkdir("./130", 0777 [pid 4994] close(3 [pid 6554] ioctl(4, LOOP_CLR_FD [pid 4998] <... mkdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6554] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6556] munmap(0x7f46b9f9b000, 2097152 [pid 6554] close(4 [pid 4998] <... openat resumed>) = 3 [pid 6554] <... close resumed>) = 0 [pid 6552] <... creat resumed>) = 4 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6560 [pid 6556] <... munmap resumed>) = 0 [pid 6554] creat("./bus", 000 [pid 6552] unlink("./bus" [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6556] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] close(3 [pid 6556] <... openat resumed>) = 4 [pid 6552] <... unlink resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 6556] ioctl(4, LOOP_SET_FD, 3 [ 150.039341][ T6555] NILFS (loop3): recovery complete [ 150.040670][ T6558] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.074334][ T6559] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6552] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6560 attached [pid 6555] <... mount resumed>) = 0 [pid 6555] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6561 [pid 6555] <... openat resumed>) = 3 [pid 6555] chdir("./file0") = 0 [pid 6555] ioctl(4, LOOP_CLR_FD) = 0 [pid 6555] close(4 [pid 6560] chdir("./128" [pid 6555] <... close resumed>) = 0 [pid 6555] creat("./bus", 000 [pid 6560] <... chdir resumed>) = 0 [pid 6552] <... pwritev2 resumed>) = 65007 [pid 6560] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6552] exit_group(0./strace-static-x86_64: Process 6561 attached [pid 6560] <... prctl resumed>) = 0 [pid 6552] <... exit_group resumed>) = ? [pid 6561] chdir("./130" [pid 6560] setpgid(0, 0 [pid 6561] <... chdir resumed>) = 0 [pid 6561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6561] setpgid(0, 0 [pid 6560] <... setpgid resumed>) = 0 [pid 6561] <... setpgid resumed>) = 0 [pid 6561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6561] <... openat resumed>) = 3 [pid 6560] <... openat resumed>) = 3 [pid 6561] write(3, "1000", 4 [pid 6560] write(3, "1000", 4 [pid 6561] <... write resumed>) = 4 [pid 6560] <... write resumed>) = 4 [pid 6555] <... creat resumed>) = 4 [pid 6561] close(3 [pid 6560] close(3 [pid 6555] unlink("./bus" [pid 6561] <... close resumed>) = 0 [pid 6560] <... close resumed>) = 0 [pid 6561] symlink("/dev/binderfs", "./binderfs" [pid 6552] +++ exited with 0 +++ [pid 6560] symlink("/dev/binderfs", "./binderfs" [pid 6561] <... symlink resumed>) = 0 [pid 6555] <... unlink resumed>) = 0 [pid 6561] memfd_create("syzkaller", 0 [pid 6560] <... symlink resumed>) = 0 [pid 6555] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6554] <... creat resumed>) = 4 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6552, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 6561] <... memfd_create resumed>) = 3 [pid 6560] memfd_create("syzkaller", 0 [pid 6554] unlink("./bus" [pid 4995] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6561] <... mmap resumed>) = 0x7f46b9f9b000 [ 150.075526][ T6556] loop0: detected capacity change from 0 to 4096 [pid 6560] <... memfd_create resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6554] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6555] <... pwritev2 resumed>) = 65007 [pid 6554] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] fstat(3, [pid 6560] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6555] exit_group(0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./126/binderfs") = 0 [pid 4995] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6556] <... ioctl resumed>) = 0 [pid 6556] close(3) = 0 [pid 6556] mkdir("./file0", 0777) = 0 [pid 6555] <... exit_group resumed>) = ? [pid 6554] <... pwritev2 resumed>) = 65007 [pid 6556] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6554] exit_group(0) = ? [pid 6555] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6555, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4996] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6560] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] lstat("./129/binderfs", [pid 6554] +++ exited with 0 +++ [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./129/binderfs" [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6554, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 150.180505][ T6556] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4997] unlink("./129/binderfs" [pid 6560] <... write resumed>) = 2097152 [pid 4997] <... unlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6560] munmap(0x7f46b9f9b000, 2097152 [pid 4996] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6560] <... munmap resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./126/file0", [pid 4996] lstat("./129/file0", [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6560] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6560] <... openat resumed>) = 4 [pid 4996] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6560] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6560] <... ioctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 4 [ 150.228003][ T6556] NILFS (loop0): trying rollback from an earlier position [ 150.266494][ T6560] loop1: detected capacity change from 0 to 4096 [pid 4995] fstat(4, [pid 4996] fstat(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6560] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 6560] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6560] mkdir("./file0", 0777 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 6560] <... mkdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 6560] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] close(4 [pid 4995] <... close resumed>) = 0 [pid 6561] <... write resumed>) = 2097152 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] rmdir("./126/file0" [pid 4997] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] rmdir("./129/file0" [pid 4995] <... rmdir resumed>) = 0 [pid 6556] <... mount resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6556] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] lstat("./129/file0", [pid 4996] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./129/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./129" [pid 6556] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6561] munmap(0x7f46b9f9b000, 2097152 [pid 4997] mkdir("./130", 0777 [pid 6561] <... munmap resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 6556] chdir("./file0" [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 4997] <... openat resumed>) = 3 [pid 6561] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6561] <... openat resumed>) = 4 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6561] ioctl(4, LOOP_SET_FD, 3 [ 150.275556][ T6556] NILFS (loop0): recovery complete [ 150.294444][ T6560] NILFS (loop1): invalid segment: Checksum error in segment payload [ 150.303212][ T6560] NILFS (loop1): trying rollback from an earlier position [ 150.311133][ T6562] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] close(3 [pid 6561] <... ioctl resumed>) = 0 [pid 6556] <... chdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 4995] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6563 [pid 6556] ioctl(4, LOOP_CLR_FD [pid 4996] <... close resumed>) = 0 [pid 4995] rmdir("./126" [pid 6556] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 6563 attached [pid 6561] close(3 [pid 6556] close(4 [pid 4996] rmdir("./129" [pid 4995] <... rmdir resumed>) = 0 [pid 6556] <... close resumed>) = 0 [pid 6563] chdir("./130" [pid 6561] <... close resumed>) = 0 [pid 6556] creat("./bus", 000 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] mkdir("./127", 0777 [pid 6563] <... chdir resumed>) = 0 [pid 6563] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] mkdir("./130", 0777 [pid 4995] <... mkdir resumed>) = 0 [pid 6563] <... prctl resumed>) = 0 [pid 6563] setpgid(0, 0 [pid 4996] <... mkdir resumed>) = 0 [pid 6563] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6561] mkdir("./file0", 0777 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 6563] <... openat resumed>) = 3 [pid 6561] <... mkdir resumed>) = 0 [pid 6560] <... mount resumed>) = 0 [pid 6556] <... creat resumed>) = 4 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6563] write(3, "1000", 4 [pid 6561] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6560] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6556] unlink("./bus" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6563] <... write resumed>) = 4 [pid 6560] <... openat resumed>) = 3 [ 150.334875][ T6561] loop5: detected capacity change from 0 to 4096 [ 150.335316][ T6560] NILFS (loop1): recovery complete [ 150.358526][ T6564] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] close(3 [pid 4995] close(3 [pid 6563] close(3 [pid 6560] chdir("./file0" [pid 6556] <... unlink resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6563] <... close resumed>) = 0 [pid 6560] <... chdir resumed>) = 0 [pid 6556] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6563] symlink("/dev/binderfs", "./binderfs" [pid 6560] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 6566 attached [pid 6563] <... symlink resumed>) = 0 [pid 6560] <... ioctl resumed>) = 0 [pid 6563] memfd_create("syzkaller", 0 [pid 6560] close(4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6565 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6566 [pid 6566] chdir("./127" [pid 6560] <... close resumed>) = 0 [pid 6563] <... memfd_create resumed>) = 3 [pid 6560] creat("./bus", 000 [pid 6563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6556] <... pwritev2 resumed>) = 65007 [pid 6566] <... chdir resumed>) = 0 [pid 6563] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6556] exit_group(0) = ? ./strace-static-x86_64: Process 6565 attached [pid 6566] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6565] chdir("./130" [pid 6560] <... creat resumed>) = 4 [pid 6565] <... chdir resumed>) = 0 [pid 6560] unlink("./bus" [pid 6566] <... prctl resumed>) = 0 [pid 6565] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6566] setpgid(0, 0 [pid 6565] <... prctl resumed>) = 0 [pid 6560] <... unlink resumed>) = 0 [pid 6565] setpgid(0, 0 [pid 6560] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6566] <... setpgid resumed>) = 0 [pid 6565] <... setpgid resumed>) = 0 [pid 6565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6565] <... openat resumed>) = 3 [pid 6565] write(3, "1000", 4 [pid 6566] <... openat resumed>) = 3 [pid 6565] <... write resumed>) = 4 [pid 6566] write(3, "1000", 4 [pid 6565] close(3) = 0 [pid 6565] symlink("/dev/binderfs", "./binderfs" [pid 6566] <... write resumed>) = 4 [pid 6565] <... symlink resumed>) = 0 [pid 6566] close(3 [ 150.384419][ T6561] NILFS (loop5): invalid segment: Checksum error in segment payload [ 150.402944][ T6561] NILFS (loop5): trying rollback from an earlier position [pid 6565] memfd_create("syzkaller", 0 [pid 6566] <... close resumed>) = 0 [pid 6565] <... memfd_create resumed>) = 3 [pid 6560] <... pwritev2 resumed>) = 65007 [pid 6556] +++ exited with 0 +++ [pid 6566] symlink("/dev/binderfs", "./binderfs" [pid 6565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6560] exit_group(0 [pid 6566] <... symlink resumed>) = 0 [pid 6565] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6560] <... exit_group resumed>) = ? [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6556, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6566] memfd_create("syzkaller", 0 [pid 6563] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6566] <... memfd_create resumed>) = 3 [pid 4993] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... openat resumed>) = 3 [pid 6566] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./129/binderfs", [pid 6560] +++ exited with 0 +++ [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6560, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] unlink("./129/binderfs" [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./128/binderfs") = 0 [pid 4994] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6566] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = 0 [ 150.487239][ T6561] NILFS (loop5): recovery complete [pid 6561] <... mount resumed>) = 0 [pid 6561] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6561] chdir("./file0") = 0 [pid 6561] ioctl(4, LOOP_CLR_FD) = 0 [pid 6561] close(4) = 0 [pid 6561] creat("./bus", 000 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./129/file0" [pid 4994] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6563] <... write resumed>) = 2097152 [pid 4993] <... rmdir resumed>) = 0 [ 150.520381][ T6567] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6563] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(3 [pid 4994] lstat("./128/file0", [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./129" [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./130", 0777 [pid 6563] <... munmap resumed>) = 0 [pid 4994] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 3 [pid 6563] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 6566] <... write resumed>) = 2097152 [pid 6565] <... write resumed>) = 2097152 [pid 6563] <... openat resumed>) = 4 [pid 4994] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6561] <... creat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 6566] munmap(0x7f46b9f9b000, 2097152 [pid 6565] munmap(0x7f46b9f9b000, 2097152 [pid 6563] ioctl(4, LOOP_SET_FD, 3 [pid 6561] unlink("./bus" [pid 4994] <... openat resumed>) = 4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6566] <... munmap resumed>) = 0 [pid 6563] <... ioctl resumed>) = 0 [pid 6561] <... unlink resumed>) = 0 [pid 4994] fstat(4, [pid 6561] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 6568 attached [pid 6566] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6565] <... munmap resumed>) = 0 [pid 6563] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6568 [pid 6568] chdir("./130" [pid 6566] <... openat resumed>) = 4 [pid 6565] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6563] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 6568] <... chdir resumed>) = 0 [pid 6566] ioctl(4, LOOP_SET_FD, 3 [pid 6565] <... openat resumed>) = 4 [pid 6563] mkdir("./file0", 0777) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6563] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6566] <... ioctl resumed>) = 0 [pid 4994] getdents64(4, [pid 6568] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6565] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6568] <... prctl resumed>) = 0 [pid 6566] close(3 [pid 4994] close(4 [pid 6566] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6566] mkdir("./file0", 0777 [pid 4994] rmdir("./128/file0" [pid 6566] <... mkdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6566] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./128") = 0 [pid 6565] <... ioctl resumed>) = 0 [pid 4994] mkdir("./129", 0777 [pid 6565] close(3 [pid 4994] <... mkdir resumed>) = 0 [pid 6565] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6565] mkdir("./file0", 0777 [pid 4994] <... openat resumed>) = 3 [pid 6565] <... mkdir resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6565] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6568] setpgid(0, 0 [pid 6561] <... pwritev2 resumed>) = 65007 [ 150.596776][ T6563] loop4: detected capacity change from 0 to 4096 [ 150.616347][ T6566] loop2: detected capacity change from 0 to 4096 [ 150.626809][ T6565] loop3: detected capacity change from 0 to 4096 [ 150.628393][ T6563] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 4994] close(3 [pid 6568] <... setpgid resumed>) = 0 [pid 6561] exit_group(0 [pid 4994] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6569 attached [pid 6568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6561] <... exit_group resumed>) = ? [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6569 [pid 6568] <... openat resumed>) = 3 [pid 6569] chdir("./129" [ 150.642956][ T6563] NILFS (loop4): trying rollback from an earlier position [ 150.659523][ T6566] NILFS (loop2): invalid segment: Checksum error in segment payload [ 150.671294][ T6565] NILFS (loop3): invalid segment: Checksum error in segment payload [ 150.678900][ T6563] NILFS (loop4): recovery complete [ 150.682248][ T6566] NILFS (loop2): trying rollback from an earlier position [pid 6568] write(3, "1000", 4 [pid 6569] <... chdir resumed>) = 0 [pid 6568] <... write resumed>) = 4 [pid 6569] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6568] close(3 [pid 6561] +++ exited with 0 +++ [pid 6568] <... close resumed>) = 0 [pid 6569] <... prctl resumed>) = 0 [pid 6569] setpgid(0, 0 [pid 6568] symlink("/dev/binderfs", "./binderfs" [pid 6569] <... setpgid resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6561, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 6569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6568] <... symlink resumed>) = 0 [pid 4998] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6569] <... openat resumed>) = 3 [pid 6568] memfd_create("syzkaller", 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6569] write(3, "1000", 4 [pid 6568] <... memfd_create resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6569] <... write resumed>) = 4 [pid 6568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... openat resumed>) = 3 [pid 6569] close(3 [pid 6568] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6563] <... mount resumed>) = 0 [pid 4998] fstat(3, [pid 6569] <... close resumed>) = 0 [pid 6565] <... mount resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6569] symlink("/dev/binderfs", "./binderfs" [pid 4998] getdents64(3, [pid 6569] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6569] memfd_create("syzkaller", 0 [pid 4998] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6569] <... memfd_create resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] lstat("./130/binderfs", [pid 6569] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6565] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6563] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] unlink("./130/binderfs" [pid 6565] <... openat resumed>) = 3 [pid 6563] <... openat resumed>) = 3 [pid 4998] <... unlink resumed>) = 0 [pid 6565] chdir("./file0" [pid 6563] chdir("./file0" [ 150.686817][ T6565] NILFS (loop3): trying rollback from an earlier position [ 150.701409][ T6570] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.716753][ T6565] NILFS (loop3): recovery complete [ 150.723818][ T6571] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.736523][ T6566] NILFS (loop2): recovery complete [pid 4998] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6565] <... chdir resumed>) = 0 [pid 6563] <... chdir resumed>) = 0 [pid 6569] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6568] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6566] <... mount resumed>) = 0 [pid 6565] ioctl(4, LOOP_CLR_FD [pid 6563] ioctl(4, LOOP_CLR_FD [pid 6569] <... write resumed>) = 2097152 [pid 6568] <... write resumed>) = 2097152 [pid 6566] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6565] <... ioctl resumed>) = 0 [pid 6563] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 6569] munmap(0x7f46b9f9b000, 2097152 [pid 6568] munmap(0x7f46b9f9b000, 2097152 [pid 6566] <... openat resumed>) = 3 [pid 6565] close(4 [pid 6563] close(4 [pid 4998] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6569] <... munmap resumed>) = 0 [pid 6568] <... munmap resumed>) = 0 [pid 6566] chdir("./file0" [pid 6565] <... close resumed>) = 0 [pid 6563] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6568] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6566] <... chdir resumed>) = 0 [pid 6565] creat("./bus", 000 [pid 6563] creat("./bus", 000 [pid 4998] lstat("./130/file0", [pid 6568] <... openat resumed>) = 4 [pid 6566] ioctl(4, LOOP_CLR_FD [pid 6565] <... creat resumed>) = 4 [ 150.751212][ T6572] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6568] ioctl(4, LOOP_SET_FD, 3 [pid 6566] <... ioctl resumed>) = 0 [pid 6565] unlink("./bus" [pid 6563] <... creat resumed>) = 4 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6566] close(4 [pid 6565] <... unlink resumed>) = 0 [pid 6563] unlink("./bus" [pid 4998] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6566] <... close resumed>) = 0 [pid 6565] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6563] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6569] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6566] creat("./bus", 000 [pid 6563] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6569] <... openat resumed>) = 4 [pid 6566] <... creat resumed>) = 4 [pid 6566] unlink("./bus" [pid 4998] <... openat resumed>) = 4 [pid 6569] ioctl(4, LOOP_SET_FD, 3 [pid 6566] <... unlink resumed>) = 0 [pid 6565] <... pwritev2 resumed>) = 65007 [pid 6566] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6565] exit_group(0) = ? [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6563] <... pwritev2 resumed>) = 65007 [pid 4998] getdents64(4, [pid 6563] exit_group(0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6566] <... pwritev2 resumed>) = 65007 [pid 6563] <... exit_group resumed>) = ? [pid 6569] <... ioctl resumed>) = 0 [pid 6568] <... ioctl resumed>) = 0 [pid 6566] exit_group(0 [pid 4998] getdents64(4, [pid 6569] close(3 [pid 6568] close(3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6566] <... exit_group resumed>) = ? [pid 6569] <... close resumed>) = 0 [pid 6568] <... close resumed>) = 0 [pid 4998] close(4 [pid 6569] mkdir("./file0", 0777 [pid 6568] mkdir("./file0", 0777 [pid 4998] <... close resumed>) = 0 [pid 6569] <... mkdir resumed>) = 0 [pid 6568] <... mkdir resumed>) = 0 [pid 4998] rmdir("./130/file0" [pid 6569] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6568] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 150.800388][ T6568] loop0: detected capacity change from 0 to 4096 [ 150.840429][ T6569] loop1: detected capacity change from 0 to 4096 [pid 4998] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6565] +++ exited with 0 +++ [pid 4998] close(3) = 0 [pid 4998] rmdir("./130") = 0 [pid 4998] mkdir("./131", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 6566] +++ exited with 0 +++ [pid 6563] +++ exited with 0 +++ [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6565, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6563, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6573 [pid 4997] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6566, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- ./strace-static-x86_64: Process 6573 attached [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] chdir("./131" [pid 4997] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6573] <... chdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./130/binderfs") = 0 [pid 4996] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6573] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6573] <... prctl resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [ 150.889458][ T6569] NILFS (loop1): invalid segment: Checksum error in segment payload [ 150.895320][ T6568] NILFS (loop0): invalid segment: Checksum error in segment payload [ 150.905992][ T6568] NILFS (loop0): trying rollback from an earlier position [ 150.924887][ T6568] NILFS (loop0): recovery complete [pid 6573] setpgid(0, 0 [pid 6568] <... mount resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, [pid 6573] <... setpgid resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] fstat(3, [pid 4995] getdents64(3, [pid 6573] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6573] write(3, "1000", 4 [pid 4996] getdents64(3, [pid 4995] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] <... write resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6573] close(3 [pid 4996] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./127/binderfs", [pid 6573] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6573] symlink("/dev/binderfs", "./binderfs" [pid 4996] lstat("./130/binderfs", [pid 4995] unlink("./127/binderfs" [pid 6573] <... symlink resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6573] memfd_create("syzkaller", 0 [pid 4996] unlink("./130/binderfs" [pid 4995] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] <... memfd_create resumed>) = 3 [pid 4996] <... unlink resumed>) = 0 [pid 6573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6568] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6568] chdir("./file0") = 0 [pid 6568] ioctl(4, LOOP_CLR_FD) = 0 [pid 6568] close(4) = 0 [pid 6568] creat("./bus", 000) = 4 [pid 6568] unlink("./bus") = 0 [pid 6568] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 150.931195][ T6574] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 150.932461][ T6569] NILFS (loop1): trying rollback from an earlier position [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4997] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6568] <... pwritev2 resumed>) = 65007 [pid 4997] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6568] exit_group(0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6568] <... exit_group resumed>) = ? [pid 4997] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] lstat("./127/file0", [pid 4997] <... openat resumed>) = 4 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(4, [pid 4995] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4996] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, [pid 4996] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] fstat(4, [pid 4996] rmdir("./130/file0" [pid 4997] close(4 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 6568] +++ exited with 0 +++ [pid 4996] rmdir("./130" [pid 4997] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6568, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- [pid 4997] rmdir("./130/file0" [pid 4996] mkdir("./131", 0777 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4993] <... restart_syscall resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] close(4 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] <... write resumed>) = 2097152 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] close(3 [pid 4993] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6576 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./130/binderfs") = 0 [pid 4993] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] munmap(0x7f46b9f9b000, 2097152./strace-static-x86_64: Process 6576 attached [pid 6576] chdir("./131") = 0 [pid 6576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6576] setpgid(0, 0) = 0 [pid 6573] <... munmap resumed>) = 0 [pid 6569] <... mount resumed>) = 0 [pid 4997] close(3 [pid 4995] <... close resumed>) = 0 [pid 6569] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4995] rmdir("./127/file0" [pid 6573] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6573] ioctl(4, LOOP_SET_FD, 3 [pid 6576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6569] <... openat resumed>) = 3 [pid 4997] rmdir("./130" [pid 4995] <... rmdir resumed>) = 0 [pid 6576] <... openat resumed>) = 3 [pid 6569] chdir("./file0" [pid 4997] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 6576] write(3, "1000", 4 [pid 6569] <... chdir resumed>) = 0 [pid 4997] mkdir("./131", 0777 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6576] <... write resumed>) = 4 [pid 6569] ioctl(4, LOOP_CLR_FD [pid 4997] <... mkdir resumed>) = 0 [pid 4995] close(3 [pid 6576] close(3 [pid 6569] <... ioctl resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... close resumed>) = 0 [pid 6576] <... close resumed>) = 0 [pid 6569] close(4 [pid 4997] <... openat resumed>) = 3 [ 151.050502][ T6569] NILFS (loop1): recovery complete [ 151.069224][ T6575] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] rmdir("./127" [pid 6576] symlink("/dev/binderfs", "./binderfs" [pid 6569] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... rmdir resumed>) = 0 [pid 6576] <... symlink resumed>) = 0 [pid 6569] creat("./bus", 000 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] mkdir("./128", 0777 [pid 6576] memfd_create("syzkaller", 0 [pid 4997] close(3 [pid 4995] <... mkdir resumed>) = 0 [pid 6576] <... memfd_create resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 3 [pid 6576] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 6577 attached [pid 6569] <... creat resumed>) = 4 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6577 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... umount2 resumed>) = 0 [pid 6577] chdir("./131" [pid 6569] unlink("./bus" [pid 4995] close(3 [pid 6573] <... ioctl resumed>) = 0 [pid 4993] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6577] <... chdir resumed>) = 0 [pid 6573] close(3 [pid 6569] <... unlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6577] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6573] <... close resumed>) = 0 [pid 6569] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] lstat("./130/file0", [pid 6577] <... prctl resumed>) = 0 [pid 6573] mkdir("./file0", 0777 [pid 6577] setpgid(0, 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6578 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6573] <... mkdir resumed>) = 0 [pid 6577] <... setpgid resumed>) = 0 [pid 6569] <... pwritev2 resumed>) = 65007 [pid 4993] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6573] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6569] exit_group(0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6577] <... openat resumed>) = 3 [pid 6569] <... exit_group resumed>) = ? [ 151.111698][ T6573] loop5: detected capacity change from 0 to 4096 [pid 6577] write(3, "1000", 4 [pid 4993] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6577] <... write resumed>) = 4 [pid 6576] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 6578 attached [pid 6577] close(3 [pid 4993] <... openat resumed>) = 4 [pid 6569] +++ exited with 0 +++ [pid 6578] chdir("./128" [pid 6577] <... close resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6569, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 4993] fstat(4, [pid 6578] <... chdir resumed>) = 0 [pid 6577] symlink("/dev/binderfs", "./binderfs" [pid 6578] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6577] <... symlink resumed>) = 0 [pid 6578] <... prctl resumed>) = 0 [pid 4993] getdents64(4, [pid 6577] memfd_create("syzkaller", 0 [pid 6578] setpgid(0, 0) = 0 [pid 6577] <... memfd_create resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] getdents64(4, [pid 6578] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6578] write(3, "1000", 4 [pid 6577] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 6578] <... write resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./130/file0" [pid 6578] close(3) = 0 [pid 4994] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... rmdir resumed>) = 0 [pid 6578] symlink("/dev/binderfs", "./binderfs" [pid 4993] getdents64(3, [pid 6578] <... symlink resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6578] memfd_create("syzkaller", 0 [pid 4994] fstat(3, [pid 4993] close(3 [pid 6578] <... memfd_create resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 6578] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] rmdir("./130" [pid 4994] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./129/binderfs") = 0 [pid 4994] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./131", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [ 151.175990][ T6573] NILFS (loop5): invalid segment: Checksum error in segment payload [ 151.185185][ T6573] NILFS (loop5): trying rollback from an earlier position [pid 6577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6576] <... write resumed>) = 2097152 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6579 ./strace-static-x86_64: Process 6579 attached [pid 6578] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6579] chdir("./131") = 0 [pid 6579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6579] setpgid(0, 0) = 0 [pid 6579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6579] write(3, "1000", 4) = 4 [pid 6579] close(3 [pid 6577] <... write resumed>) = 2097152 [pid 6579] <... close resumed>) = 0 [pid 6579] symlink("/dev/binderfs", "./binderfs" [pid 6576] munmap(0x7f46b9f9b000, 2097152 [pid 6579] <... symlink resumed>) = 0 [pid 6576] <... munmap resumed>) = 0 [pid 6579] memfd_create("syzkaller", 0 [pid 6577] munmap(0x7f46b9f9b000, 2097152 [pid 6579] <... memfd_create resumed>) = 3 [pid 4994] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6576] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6579] <... mmap resumed>) = 0x7f46b9f9b000 [ 151.269443][ T6573] NILFS (loop5): recovery complete [pid 6578] <... write resumed>) = 2097152 [pid 6577] <... munmap resumed>) = 0 [pid 6576] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6578] munmap(0x7f46b9f9b000, 2097152 [pid 6577] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] lstat("./129/file0", [pid 6578] <... munmap resumed>) = 0 [pid 6577] <... openat resumed>) = 4 [pid 6576] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6578] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6577] ioctl(4, LOOP_SET_FD, 3 [pid 4994] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6579] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6578] <... openat resumed>) = 4 [pid 6576] <... ioctl resumed>) = 0 [pid 6573] <... mount resumed>) = 0 [pid 6578] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6576] close(3 [pid 6573] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, [pid 6576] <... close resumed>) = 0 [pid 6573] <... openat resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./129/file0" [pid 6576] mkdir("./file0", 0777 [pid 6573] chdir("./file0" [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6576] <... mkdir resumed>) = 0 [pid 6573] <... chdir resumed>) = 0 [pid 4994] close(3 [pid 6573] ioctl(4, LOOP_CLR_FD [pid 6576] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... close resumed>) = 0 [pid 6573] <... ioctl resumed>) = 0 [pid 4994] rmdir("./129" [pid 6573] close(4 [pid 4994] <... rmdir resumed>) = 0 [ 151.291954][ T6580] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.307014][ T6576] loop3: detected capacity change from 0 to 4096 [ 151.307087][ T6577] loop4: detected capacity change from 0 to 4096 [ 151.320792][ T6578] loop2: detected capacity change from 0 to 4096 [pid 6573] <... close resumed>) = 0 [pid 4994] mkdir("./130", 0777 [pid 6578] <... ioctl resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6578] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6578] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6578] mkdir("./file0", 0777 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6578] <... mkdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6578] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6581 [pid 6577] <... ioctl resumed>) = 0 [pid 6577] close(3) = 0 [pid 6577] mkdir("./file0", 0777 [pid 6579] <... write resumed>) = 2097152 [pid 6577] <... mkdir resumed>) = 0 [pid 6573] creat("./bus", 000./strace-static-x86_64: Process 6581 attached [pid 6577] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6581] chdir("./130") = 0 [pid 6581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6581] setpgid(0, 0) = 0 [pid 6581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6579] munmap(0x7f46b9f9b000, 2097152 [pid 6573] <... creat resumed>) = 4 [ 151.342187][ T6576] NILFS (loop3): invalid segment: Checksum error in segment payload [ 151.360164][ T6576] NILFS (loop3): trying rollback from an earlier position [ 151.369785][ T6578] NILFS (loop2): invalid segment: Checksum error in segment payload [ 151.381660][ T6577] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6581] <... openat resumed>) = 3 [pid 6579] <... munmap resumed>) = 0 [pid 6573] unlink("./bus" [pid 6581] write(3, "1000", 4) = 4 [pid 6581] close(3) = 0 [pid 6581] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6581] memfd_create("syzkaller", 0) = 3 [pid 6581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6579] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6573] <... unlink resumed>) = 0 [pid 6579] <... openat resumed>) = 4 [pid 6573] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6579] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6579] close(3 [pid 6576] <... mount resumed>) = 0 [pid 6573] <... pwritev2 resumed>) = 65007 [ 151.388908][ T6576] NILFS (loop3): recovery complete [ 151.402835][ T6578] NILFS (loop2): trying rollback from an earlier position [ 151.415447][ T6579] loop0: detected capacity change from 0 to 4096 [ 151.425116][ T6577] NILFS (loop4): trying rollback from an earlier position [ 151.432495][ T6582] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6579] <... close resumed>) = 0 [pid 6576] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6573] exit_group(0 [pid 6579] mkdir("./file0", 0777 [pid 6576] <... openat resumed>) = 3 [pid 6573] <... exit_group resumed>) = ? [pid 6579] <... mkdir resumed>) = 0 [pid 6576] chdir("./file0") = 0 [pid 6579] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6573] +++ exited with 0 +++ [pid 6576] ioctl(4, LOOP_CLR_FD [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6573, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6576] <... ioctl resumed>) = 0 [pid 6576] close(4 [pid 4998] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6576] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6581] <... write resumed>) = 2097152 [pid 6576] creat("./bus", 000 [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 6576] <... creat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6576] unlink("./bus" [pid 4998] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./131/binderfs") = 0 [pid 4998] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6581] munmap(0x7f46b9f9b000, 2097152 [pid 6576] <... unlink resumed>) = 0 [pid 6581] <... munmap resumed>) = 0 [ 151.464671][ T6579] NILFS (loop0): invalid segment: Checksum error in segment payload [ 151.496857][ T6579] NILFS (loop0): trying rollback from an earlier position [ 151.500310][ T6577] NILFS (loop4): recovery complete [pid 6576] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6581] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6581] ioctl(4, LOOP_SET_FD, 3 [pid 6579] <... mount resumed>) = 0 [pid 6581] <... ioctl resumed>) = 0 [pid 6581] close(3) = 0 [pid 6581] mkdir("./file0", 0777) = 0 [pid 6581] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6576] <... pwritev2 resumed>) = 65007 [pid 6576] exit_group(0 [pid 6579] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6576] <... exit_group resumed>) = ? [pid 6579] <... openat resumed>) = 3 [pid 6579] chdir("./file0" [pid 6578] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [ 151.512783][ T6578] NILFS (loop2): recovery complete [ 151.519850][ T6579] NILFS (loop0): recovery complete [ 151.523110][ T6581] loop1: detected capacity change from 0 to 4096 [ 151.528610][ T6584] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.549031][ T6583] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6579] <... chdir resumed>) = 0 [pid 6578] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6579] ioctl(4, LOOP_CLR_FD [pid 6578] <... openat resumed>) = 3 [pid 4998] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6576] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6576, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6577] <... mount resumed>) = 0 [pid 4996] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6577] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6577] <... openat resumed>) = 3 [pid 4996] lstat("./131/binderfs", [pid 6577] chdir("./file0" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6577] <... chdir resumed>) = 0 [pid 4996] unlink("./131/binderfs" [pid 6577] ioctl(4, LOOP_CLR_FD [pid 4996] <... unlink resumed>) = 0 [pid 6577] <... ioctl resumed>) = 0 [pid 4996] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6577] close(4 [pid 6579] <... ioctl resumed>) = 0 [pid 6578] chdir("./file0" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6579] close(4 [pid 6578] <... chdir resumed>) = 0 [pid 4998] lstat("./131/file0", [pid 6579] <... close resumed>) = 0 [pid 6578] ioctl(4, LOOP_CLR_FD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6579] creat("./bus", 000 [pid 6578] <... ioctl resumed>) = 0 [pid 4998] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6578] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6578] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6578] creat("./bus", 000 [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./131/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./131") = 0 [pid 4998] mkdir("./132", 0777 [pid 6579] <... creat resumed>) = 4 [pid 6577] <... close resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 6579] unlink("./bus" [pid 6578] <... creat resumed>) = 4 [pid 6577] creat("./bus", 000 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6579] <... unlink resumed>) = 0 [pid 6578] unlink("./bus" [pid 4998] <... openat resumed>) = 3 [pid 6579] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6578] <... unlink resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6579] <... pwritev2 resumed>) = 65007 [pid 6578] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6577] <... creat resumed>) = 4 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [ 151.567485][ T6581] NILFS (loop1): invalid segment: Checksum error in segment payload [ 151.577303][ T6581] NILFS (loop1): trying rollback from an earlier position [ 151.584696][ T6585] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 151.606484][ T6581] NILFS (loop1): recovery complete [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6587 ./strace-static-x86_64: Process 6587 attached [pid 6577] unlink("./bus" [pid 6581] <... mount resumed>) = 0 [pid 6579] exit_group(0 [pid 6577] <... unlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6581] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6579] <... exit_group resumed>) = ? [pid 6577] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6578] <... pwritev2 resumed>) = 65007 [pid 4996] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6587] chdir("./132" [pid 6581] <... openat resumed>) = 3 [pid 6587] <... chdir resumed>) = 0 [pid 6587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6587] setpgid(0, 0) = 0 [pid 6587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6587] write(3, "1000", 4) = 4 [pid 6587] close(3) = 0 [pid 6587] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6587] memfd_create("syzkaller", 0) = 3 [pid 6587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6581] chdir("./file0" [pid 6579] +++ exited with 0 +++ [pid 6578] exit_group(0 [pid 6577] <... pwritev2 resumed>) = 65007 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6581] <... chdir resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6579, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6578] <... exit_group resumed>) = ? [pid 6577] exit_group(0 [pid 4996] lstat("./131/file0", [pid 4993] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6581] ioctl(4, LOOP_CLR_FD [pid 6577] <... exit_group resumed>) = ? [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./131/binderfs" [pid 6581] <... ioctl resumed>) = 0 [pid 4996] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6581] close(4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6581] <... close resumed>) = 0 [pid 6581] creat("./bus", 000 [pid 4996] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 6581] <... creat resumed>) = 4 [pid 4996] rmdir("./131/file0" [ 151.640241][ T6586] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6581] unlink("./bus" [pid 4996] <... rmdir resumed>) = 0 [pid 6581] <... unlink resumed>) = 0 [pid 4996] getdents64(3, [pid 6581] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./131") = 0 [pid 4996] mkdir("./132", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6588 [pid 6577] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6577, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./131/binderfs") = 0 [pid 4997] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6588 attached [pid 6588] chdir("./132") = 0 [pid 6588] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6578] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6578, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 6588] <... prctl resumed>) = 0 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6588] setpgid(0, 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 6588] <... setpgid resumed>) = 0 [pid 6588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6588] write(3, "1000", 4 [pid 4995] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6588] <... write resumed>) = 4 [pid 6588] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6588] <... close resumed>) = 0 [pid 4993] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6588] symlink("/dev/binderfs", "./binderfs" [pid 4995] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6588] <... symlink resumed>) = 0 [pid 6581] <... pwritev2 resumed>) = 65007 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6588] memfd_create("syzkaller", 0 [pid 6581] exit_group(0 [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6588] <... memfd_create resumed>) = 3 [pid 6588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6581] <... exit_group resumed>) = ? [pid 4995] fstat(3, [pid 4993] lstat("./131/file0", [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4993] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 4 [pid 6587] <... write resumed>) = 2097152 [pid 6581] +++ exited with 0 +++ [pid 4995] lstat("./128/binderfs", [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6581, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4994] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, [pid 4997] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 4997] lstat("./131/file0", [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(4, [pid 4997] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./130/binderfs", [pid 4997] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4994] unlink("./130/binderfs" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(4, [pid 4995] unlink("./128/binderfs" [pid 4994] <... unlink resumed>) = 0 [pid 4993] getdents64(4, [pid 6588] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6587] munmap(0x7f46b9f9b000, 2097152 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4994] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4995] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4993] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4993] close(4 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./131/file0" [pid 4993] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] rmdir("./131/file0" [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./131" [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4997] mkdir("./132", 0777 [pid 6587] <... munmap resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6587] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] close(3 [pid 6587] <... openat resumed>) = 4 [pid 4997] <... close resumed>) = 0 [pid 4993] rmdir("./131" [pid 6587] ioctl(4, LOOP_SET_FD, 3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6589 [pid 4995] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, [pid 4994] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] mkdir("./132", 0777 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4995] rmdir("./128/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6589 attached [pid 4995] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6589] chdir("./132" [pid 4995] getdents64(3, [pid 4994] lstat("./130/file0", [pid 6589] <... chdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 6589] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] close(3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6589] <... prctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6589] setpgid(0, 0 [pid 4995] rmdir("./128" [pid 4994] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6589] <... setpgid resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] mkdir("./129", 0777 [pid 4994] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 6589] <... openat resumed>) = 3 [pid 4995] <... mkdir resumed>) = 0 [pid 6589] write(3, "1000", 4 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... openat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 6589] <... write resumed>) = 4 [pid 4994] fstat(4, [pid 6589] close(3 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6587] <... ioctl resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6589] <... close resumed>) = 0 [pid 6589] symlink("/dev/binderfs", "./binderfs" [pid 6587] close(3 [pid 6589] <... symlink resumed>) = 0 [pid 6587] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 6589] memfd_create("syzkaller", 0 [pid 6587] mkdir("./file0", 0777 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6590 [pid 6589] <... memfd_create resumed>) = 3 [pid 6587] <... mkdir resumed>) = 0 [pid 4994] getdents64(4, [pid 6589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6587] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6589] <... mmap resumed>) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6590 attached [pid 6588] <... write resumed>) = 2097152 [pid 4994] close(4) = 0 [pid 4994] rmdir("./130/file0" [pid 4995] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6591 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 151.828373][ T6587] loop5: detected capacity change from 0 to 4096 [pid 4994] close(3) = 0 [pid 4994] rmdir("./130") = 0 [pid 4994] mkdir("./131", 0777 [pid 6590] chdir("./132" [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6590] <... chdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6590] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6590] <... prctl resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6590] setpgid(0, 0 [pid 4994] close(3./strace-static-x86_64: Process 6591 attached [pid 6590] <... setpgid resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6591] chdir("./129" [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6591] <... chdir resumed>) = 0 [pid 6591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6591] setpgid(0, 0 [pid 6590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6591] <... setpgid resumed>) = 0 [pid 6591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6590] <... openat resumed>) = 3 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6592 [pid 6591] <... openat resumed>) = 3 [pid 6590] write(3, "1000", 4 [pid 6591] write(3, "1000", 4 [pid 6590] <... write resumed>) = 4 [pid 6591] <... write resumed>) = 4 [pid 6590] close(3 [pid 6591] close(3 [pid 6590] <... close resumed>) = 0 ./strace-static-x86_64: Process 6592 attached [pid 6591] <... close resumed>) = 0 [pid 6590] symlink("/dev/binderfs", "./binderfs" [pid 6591] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6590] <... symlink resumed>) = 0 [pid 6592] chdir("./131" [pid 6591] memfd_create("syzkaller", 0 [pid 6590] memfd_create("syzkaller", 0 [pid 6589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6591] <... memfd_create resumed>) = 3 [pid 6590] <... memfd_create resumed>) = 3 [pid 6591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 151.883981][ T6587] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6592] <... chdir resumed>) = 0 [pid 6590] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6588] munmap(0x7f46b9f9b000, 2097152 [pid 6592] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6588] <... munmap resumed>) = 0 [pid 6592] <... prctl resumed>) = 0 [pid 6588] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6592] setpgid(0, 0 [pid 6588] <... openat resumed>) = 4 [pid 6592] <... setpgid resumed>) = 0 [pid 6592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6588] ioctl(4, LOOP_SET_FD, 3 [pid 6592] <... openat resumed>) = 3 [pid 6592] write(3, "1000", 4 [pid 6589] <... write resumed>) = 2097152 [pid 6592] <... write resumed>) = 4 [pid 6592] close(3 [pid 6588] <... ioctl resumed>) = 0 [pid 6592] <... close resumed>) = 0 [pid 6592] symlink("/dev/binderfs", "./binderfs" [pid 6588] close(3 [pid 6592] <... symlink resumed>) = 0 [pid 6588] <... close resumed>) = 0 [pid 6592] memfd_create("syzkaller", 0) = 3 [pid 6588] mkdir("./file0", 0777 [pid 6592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6588] <... mkdir resumed>) = 0 [ 151.924729][ T6587] NILFS (loop5): trying rollback from an earlier position [ 151.949181][ T6588] loop3: detected capacity change from 0 to 4096 [pid 6588] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6590] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6589] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6589] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6589] ioctl(4, LOOP_SET_FD, 3 [pid 6592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6589] <... ioctl resumed>) = 0 [pid 6589] close(3) = 0 [pid 6589] mkdir("./file0", 0777 [pid 6592] <... write resumed>) = 2097152 [pid 6591] <... write resumed>) = 2097152 [ 151.996271][ T6587] NILFS (loop5): recovery complete [ 152.010790][ T6588] NILFS (loop3): invalid segment: Checksum error in segment payload [ 152.015938][ T6589] loop4: detected capacity change from 0 to 4096 [ 152.034421][ T6588] NILFS (loop3): trying rollback from an earlier position [pid 6591] munmap(0x7f46b9f9b000, 2097152 [pid 6587] <... mount resumed>) = 0 [pid 6589] <... mkdir resumed>) = 0 [pid 6587] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6591] <... munmap resumed>) = 0 [pid 6589] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6587] <... openat resumed>) = 3 [pid 6591] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6587] chdir("./file0" [pid 6591] <... openat resumed>) = 4 [pid 6587] <... chdir resumed>) = 0 [pid 6591] ioctl(4, LOOP_SET_FD, 3 [pid 6587] ioctl(4, LOOP_CLR_FD [pid 6592] munmap(0x7f46b9f9b000, 2097152 [pid 6590] <... write resumed>) = 2097152 [pid 6587] <... ioctl resumed>) = 0 [pid 6592] <... munmap resumed>) = 0 [pid 6590] munmap(0x7f46b9f9b000, 2097152 [pid 6592] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6590] <... munmap resumed>) = 0 [pid 6592] <... openat resumed>) = 4 [pid 6590] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6592] ioctl(4, LOOP_SET_FD, 3 [pid 6590] <... openat resumed>) = 4 [pid 6591] <... ioctl resumed>) = 0 [pid 6590] ioctl(4, LOOP_SET_FD, 3 [pid 6587] close(4 [pid 6590] <... ioctl resumed>) = 0 [pid 6590] close(3) = 0 [ 152.062425][ T6593] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.071756][ T6591] loop2: detected capacity change from 0 to 4096 [ 152.083367][ T6589] NILFS (loop4): invalid segment: Checksum error in segment payload [ 152.089768][ T6592] loop1: detected capacity change from 0 to 4096 [ 152.092118][ T6589] NILFS (loop4): trying rollback from an earlier position [ 152.099478][ T6590] loop0: detected capacity change from 0 to 4096 [pid 6590] mkdir("./file0", 0777 [pid 6591] close(3 [pid 6590] <... mkdir resumed>) = 0 [pid 6587] <... close resumed>) = 0 [pid 6590] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6591] <... close resumed>) = 0 [pid 6591] mkdir("./file0", 0777 [pid 6587] creat("./bus", 000 [pid 6591] <... mkdir resumed>) = 0 [pid 6587] <... creat resumed>) = 4 [pid 6591] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6587] unlink("./bus" [pid 6592] <... ioctl resumed>) = 0 [pid 6592] close(3) = 0 [pid 6592] mkdir("./file0", 0777) = 0 [pid 6592] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6587] <... unlink resumed>) = 0 [ 152.105150][ T6588] NILFS (loop3): recovery complete [ 152.132756][ T6591] NILFS (loop2): invalid segment: Checksum error in segment payload [ 152.140885][ T6590] NILFS (loop0): invalid segment: Checksum error in segment payload [ 152.147582][ T6591] NILFS (loop2): trying rollback from an earlier position [pid 6587] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6588] <... mount resumed>) = 0 [pid 6587] exit_group(0 [pid 6588] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6587] <... exit_group resumed>) = ? [pid 6588] <... openat resumed>) = 3 [pid 6588] chdir("./file0") = 0 [pid 6587] +++ exited with 0 +++ [ 152.168990][ T6594] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.173097][ T6590] NILFS (loop0): trying rollback from an earlier position [ 152.189572][ T6592] NILFS (loop1): invalid segment: Checksum error in segment payload [ 152.200319][ T6591] NILFS (loop2): recovery complete [ 152.205980][ T6590] NILFS (loop0): recovery complete [ 152.208581][ T6589] NILFS (loop4): recovery complete [pid 6588] ioctl(4, LOOP_CLR_FD) = 0 [pid 6588] close(4) = 0 [pid 6588] creat("./bus", 000 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6587, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./132/binderfs") = 0 [pid 4998] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6589] <... mount resumed>) = 0 [pid 6589] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6589] chdir("./file0") = 0 [pid 6589] ioctl(4, LOOP_CLR_FD) = 0 [pid 6589] close(4) = 0 [pid 6589] creat("./bus", 000 [pid 6588] <... creat resumed>) = 4 [pid 6588] unlink("./bus") = 0 [ 152.215070][ T6592] NILFS (loop1): trying rollback from an earlier position [ 152.231599][ T6595] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.258430][ T6596] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6588] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6590] <... mount resumed>) = 0 [pid 6590] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6591] <... mount resumed>) = 0 [pid 6590] <... openat resumed>) = 3 [pid 6591] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6590] chdir("./file0" [pid 6591] <... openat resumed>) = 3 [pid 6590] <... chdir resumed>) = 0 [pid 6591] chdir("./file0" [pid 6590] ioctl(4, LOOP_CLR_FD [pid 6591] <... chdir resumed>) = 0 [pid 6590] <... ioctl resumed>) = 0 [pid 6591] ioctl(4, LOOP_CLR_FD [pid 6590] close(4) = 0 [pid 6590] creat("./bus", 000 [pid 6591] <... ioctl resumed>) = 0 [pid 6591] close(4 [pid 6589] <... creat resumed>) = 4 [pid 6588] <... pwritev2 resumed>) = 65007 [pid 6591] <... close resumed>) = 0 [pid 6589] unlink("./bus" [pid 6591] creat("./bus", 000 [pid 6589] <... unlink resumed>) = 0 [pid 6589] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6588] exit_group(0) = ? [pid 6591] <... creat resumed>) = 4 [pid 6590] <... creat resumed>) = 4 [pid 6588] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 6592] <... mount resumed>) = 0 [pid 6591] unlink("./bus" [pid 6590] unlink("./bus" [pid 4998] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6588, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6592] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6591] <... unlink resumed>) = 0 [pid 6590] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6592] <... openat resumed>) = 3 [pid 6591] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6590] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] lstat("./132/file0", [pid 6592] chdir("./file0" [pid 6589] <... pwritev2 resumed>) = 65007 [pid 6589] exit_group(0) = ? [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6592] <... chdir resumed>) = 0 [pid 4998] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6592] ioctl(4, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6592] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 3 [pid 6591] <... pwritev2 resumed>) = 65007 [pid 6592] close(4 [pid 6591] exit_group(0 [pid 4998] <... openat resumed>) = 4 [pid 4996] fstat(3, [pid 6592] <... close resumed>) = 0 [pid 6591] <... exit_group resumed>) = ? [ 152.270380][ T6597] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.287783][ T6592] NILFS (loop1): recovery complete [ 152.293872][ T6598] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] fstat(4, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6592] creat("./bus", 000 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 6590] <... pwritev2 resumed>) = 65007 [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6592] <... creat resumed>) = 4 [pid 6590] exit_group(0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6592] unlink("./bus" [pid 6590] <... exit_group resumed>) = ? [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] lstat("./132/binderfs", [pid 4998] close(4 [pid 6589] +++ exited with 0 +++ [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6592] <... unlink resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6589, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4996] unlink("./132/binderfs" [pid 6592] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] rmdir("./132/file0" [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4997] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(3, [pid 4997] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(3 [pid 4997] fstat(3, [pid 6591] +++ exited with 0 +++ [pid 4998] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] rmdir("./132" [pid 4997] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6591, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4998] mkdir("./133", 0777 [pid 4997] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... restart_syscall resumed>) = 0 [pid 6590] +++ exited with 0 +++ [pid 4998] <... mkdir resumed>) = 0 [pid 4997] lstat("./132/binderfs", [pid 6592] <... pwritev2 resumed>) = 65007 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6592] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 4997] unlink("./132/binderfs" [pid 4995] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6592] <... exit_group resumed>) = ? [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... unlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6590, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4997] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6592] +++ exited with 0 +++ [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... openat resumed>) = 3 [pid 4993] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(3 [pid 4995] fstat(3, [pid 4998] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6592, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=3 /* 0.03 s */} --- [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] getdents64(3, [pid 4994] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6599 [pid 4995] lstat("./129/binderfs", [pid 4994] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] fstat(3, [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./129/binderfs" [pid 4994] <... openat resumed>) = 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4994] fstat(3, [pid 4995] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 ./strace-static-x86_64: Process 6599 attached [pid 4994] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./131/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] lstat("./132/binderfs", [pid 6599] chdir("./133" [pid 4994] unlink("./131/binderfs" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6599] <... chdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4993] unlink("./132/binderfs" [pid 6599] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6599] <... prctl resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 6599] setpgid(0, 0 [pid 4993] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6599] <... setpgid resumed>) = 0 [pid 4996] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6599] <... openat resumed>) = 3 [pid 6599] write(3, "1000", 4) = 4 [pid 6599] close(3) = 0 [pid 6599] symlink("/dev/binderfs", "./binderfs" [pid 4996] lstat("./132/file0", [pid 4997] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6599] <... symlink resumed>) = 0 [pid 6599] memfd_create("syzkaller", 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6599] <... memfd_create resumed>) = 3 [pid 4997] lstat("./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 4 [pid 4997] <... openat resumed>) = 4 [pid 4996] fstat(4, [pid 4997] fstat(4, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4997] close(4 [pid 4996] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] rmdir("./132/file0" [pid 4997] rmdir("./132/file0" [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4997] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4997] close(3 [pid 4996] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] rmdir("./132" [pid 4997] rmdir("./132" [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] mkdir("./133", 0777 [pid 4994] <... umount2 resumed>) = 0 [pid 4997] mkdir("./133", 0777 [pid 4996] <... mkdir resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 4997] close(3 [pid 4996] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6600 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6601 [pid 4995] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6601 attached ./strace-static-x86_64: Process 6600 attached [pid 6601] chdir("./133") = 0 [pid 6601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6601] setpgid(0, 0) = 0 [pid 6600] chdir("./133") = 0 [pid 6601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6601] <... openat resumed>) = 3 [pid 6601] write(3, "1000", 4 [pid 6600] <... prctl resumed>) = 0 [pid 6600] setpgid(0, 0 [pid 6601] <... write resumed>) = 4 [pid 6600] <... setpgid resumed>) = 0 [pid 6601] close(3 [pid 6600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6601] <... close resumed>) = 0 [pid 6601] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6600] <... openat resumed>) = 3 [pid 6600] write(3, "1000", 4 [pid 6601] memfd_create("syzkaller", 0 [pid 6600] <... write resumed>) = 4 [pid 6601] <... memfd_create resumed>) = 3 [pid 6600] close(3 [pid 4993] <... umount2 resumed>) = 0 [pid 6601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6600] <... close resumed>) = 0 [pid 6599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6601] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6600] symlink("/dev/binderfs", "./binderfs" [pid 4995] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6600] <... symlink resumed>) = 0 [pid 6600] memfd_create("syzkaller", 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6600] <... memfd_create resumed>) = 3 [pid 6600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] lstat("./129/file0", [pid 4994] lstat("./131/file0", [pid 4993] lstat("./132/file0", [pid 6600] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 4 [pid 4994] <... openat resumed>) = 4 [pid 4995] fstat(4, [pid 4994] fstat(4, [pid 4993] <... openat resumed>) = 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(4, [pid 4995] getdents64(4, [pid 4994] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 4994] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 6601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] rmdir("./129/file0" [pid 4994] rmdir("./131/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(4 [pid 4995] getdents64(3, [pid 4994] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] rmdir("./132/file0" [pid 4995] close(3 [pid 4994] close(3 [pid 4995] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] rmdir("./129" [pid 4994] rmdir("./131" [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4995] mkdir("./130", 0777 [pid 4994] mkdir("./132", 0777 [pid 4995] <... mkdir resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4994] close(3 [pid 4995] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6602 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6603 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./132") = 0 [pid 4993] mkdir("./133", 0777 [pid 6600] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 6602 attached [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 6603 attached [pid 6602] chdir("./130" [pid 6603] chdir("./132" [pid 6602] <... chdir resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 6603] <... chdir resumed>) = 0 [pid 6602] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6599] <... write resumed>) = 2097152 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6603] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6602] <... prctl resumed>) = 0 [pid 6600] <... write resumed>) = 2097152 [pid 6603] <... prctl resumed>) = 0 [pid 6599] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6603] setpgid(0, 0 [pid 6602] setpgid(0, 0 [pid 6600] munmap(0x7f46b9f9b000, 2097152 [pid 6599] <... munmap resumed>) = 0 [pid 4993] close(3 [pid 6603] <... setpgid resumed>) = 0 [pid 6599] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... close resumed>) = 0 [pid 6603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6602] <... setpgid resumed>) = 0 [pid 6600] <... munmap resumed>) = 0 [pid 6599] <... openat resumed>) = 4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6603] <... openat resumed>) = 3 [pid 6602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6600] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6603] write(3, "1000", 4 [pid 6602] <... openat resumed>) = 3 [pid 6600] <... openat resumed>) = 4 [pid 6599] ioctl(4, LOOP_SET_FD, 3 [pid 6603] <... write resumed>) = 4 [pid 6602] write(3, "1000", 4) = 4 [pid 6600] ioctl(4, LOOP_SET_FD, 3 [pid 6603] close(3 [pid 6602] close(3 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6604 ./strace-static-x86_64: Process 6604 attached [pid 6603] <... close resumed>) = 0 [pid 6602] <... close resumed>) = 0 [pid 6599] <... ioctl resumed>) = 0 [pid 6604] chdir("./133" [pid 6603] symlink("/dev/binderfs", "./binderfs" [pid 6602] symlink("/dev/binderfs", "./binderfs" [pid 6599] close(3 [pid 6604] <... chdir resumed>) = 0 [pid 6603] <... symlink resumed>) = 0 [pid 6602] <... symlink resumed>) = 0 [pid 6599] <... close resumed>) = 0 [pid 6604] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6603] memfd_create("syzkaller", 0 [pid 6602] memfd_create("syzkaller", 0 [pid 6599] mkdir("./file0", 0777 [pid 6604] <... prctl resumed>) = 0 [pid 6603] <... memfd_create resumed>) = 3 [pid 6602] <... memfd_create resumed>) = 3 [pid 6604] setpgid(0, 0 [pid 6603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6601] <... write resumed>) = 2097152 [pid 6599] <... mkdir resumed>) = 0 [pid 6604] <... setpgid resumed>) = 0 [pid 6603] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6602] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6599] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6601] munmap(0x7f46b9f9b000, 2097152 [pid 6600] <... ioctl resumed>) = 0 [pid 6604] <... openat resumed>) = 3 [pid 6601] <... munmap resumed>) = 0 [pid 6600] close(3) = 0 [pid 6601] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6600] mkdir("./file0", 0777 [pid 6601] <... openat resumed>) = 4 [pid 6600] <... mkdir resumed>) = 0 [pid 6601] ioctl(4, LOOP_SET_FD, 3 [ 152.610308][ T6599] loop5: detected capacity change from 0 to 4096 [ 152.611235][ T6600] loop3: detected capacity change from 0 to 4096 [ 152.650181][ T6599] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6600] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6604] write(3, "1000", 4) = 4 [pid 6604] close(3) = 0 [pid 6604] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6604] memfd_create("syzkaller", 0) = 3 [ 152.655788][ T6601] loop4: detected capacity change from 0 to 4096 [pid 6603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6602] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6601] <... ioctl resumed>) = 0 [pid 6601] close(3) = 0 [pid 6601] mkdir("./file0", 0777) = 0 [ 152.683299][ T6599] NILFS (loop5): trying rollback from an earlier position [ 152.690533][ T6600] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6601] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152) = 2097152 [pid 6603] <... write resumed>) = 2097152 [pid 6604] munmap(0x7f46b9f9b000, 2097152 [pid 6603] munmap(0x7f46b9f9b000, 2097152 [pid 6604] <... munmap resumed>) = 0 [pid 6604] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6603] <... munmap resumed>) = 0 [pid 6604] <... openat resumed>) = 4 [pid 6603] openat(AT_FDCWD, "/dev/loop1", O_RDWR [ 152.733145][ T6600] NILFS (loop3): trying rollback from an earlier position [ 152.755381][ T6601] NILFS (loop4): invalid segment: Checksum error in segment payload [ 152.763426][ T6601] NILFS (loop4): trying rollback from an earlier position [ 152.774649][ T6599] NILFS (loop5): recovery complete [pid 6604] ioctl(4, LOOP_SET_FD, 3 [pid 6603] <... openat resumed>) = 4 [pid 6602] <... write resumed>) = 2097152 [pid 6602] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6603] ioctl(4, LOOP_SET_FD, 3 [pid 6604] <... ioctl resumed>) = 0 [pid 6603] <... ioctl resumed>) = 0 [pid 6602] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6599] <... mount resumed>) = 0 [pid 6604] close(3 [pid 6603] close(3 [pid 6602] <... openat resumed>) = 4 [pid 6600] <... mount resumed>) = 0 [pid 6599] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6599] chdir("./file0") = 0 [pid 6599] ioctl(4, LOOP_CLR_FD) = 0 [pid 6604] <... close resumed>) = 0 [pid 6602] ioctl(4, LOOP_SET_FD, 3 [pid 6600] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 152.785382][ T6600] NILFS (loop3): recovery complete [ 152.791252][ T6604] loop0: detected capacity change from 0 to 4096 [ 152.798747][ T6605] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.801723][ T6603] loop1: detected capacity change from 0 to 4096 [ 152.816233][ T6606] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 152.828943][ T6601] NILFS (loop4): recovery complete [pid 6599] close(4 [pid 6603] <... close resumed>) = 0 [pid 6604] mkdir("./file0", 0777 [pid 6603] mkdir("./file0", 0777 [pid 6599] <... close resumed>) = 0 [pid 6603] <... mkdir resumed>) = 0 [pid 6599] creat("./bus", 000 [pid 6603] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6604] <... mkdir resumed>) = 0 [pid 6602] <... ioctl resumed>) = 0 [pid 6600] <... openat resumed>) = 3 [pid 6599] <... creat resumed>) = 4 [pid 6604] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6602] close(3 [pid 6600] chdir("./file0" [pid 6602] <... close resumed>) = 0 [pid 6600] <... chdir resumed>) = 0 [pid 6602] mkdir("./file0", 0777 [pid 6600] ioctl(4, LOOP_CLR_FD [pid 6602] <... mkdir resumed>) = 0 [pid 6601] <... mount resumed>) = 0 [pid 6599] unlink("./bus" [pid 6601] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6601] chdir("./file0") = 0 [pid 6601] ioctl(4, LOOP_CLR_FD) = 0 [pid 6601] close(4) = 0 [pid 6601] creat("./bus", 000 [pid 6600] <... ioctl resumed>) = 0 [pid 6600] close(4 [pid 6599] <... unlink resumed>) = 0 [pid 6602] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6600] <... close resumed>) = 0 [pid 6599] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 152.834890][ T6602] loop2: detected capacity change from 0 to 4096 [ 152.849193][ T6603] NILFS (loop1): invalid segment: Checksum error in segment payload [ 152.861539][ T6604] NILFS (loop0): invalid segment: Checksum error in segment payload [ 152.870368][ T6607] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6600] creat("./bus", 000) = 4 [pid 6599] <... pwritev2 resumed>) = 65007 [pid 6599] exit_group(0) = ? [pid 6600] unlink("./bus") = 0 [pid 6601] <... creat resumed>) = 4 [pid 6600] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6601] unlink("./bus" [pid 6599] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6599, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6601] <... unlink resumed>) = 0 [pid 6600] <... pwritev2 resumed>) = 65007 [pid 6601] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 152.895313][ T6603] NILFS (loop1): trying rollback from an earlier position [ 152.903667][ T6602] NILFS (loop2): invalid segment: Checksum error in segment payload [ 152.912863][ T6604] NILFS (loop0): trying rollback from an earlier position [ 152.924633][ T6602] NILFS (loop2): trying rollback from an earlier position [pid 6600] exit_group(0) = ? [pid 4998] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6601] <... pwritev2 resumed>) = 65007 [ 152.960647][ T6604] NILFS (loop0): recovery complete [pid 6600] +++ exited with 0 +++ [pid 6601] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6600, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6601] <... exit_group resumed>) = ? [pid 4998] fstat(3, [pid 4996] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./133/binderfs" [pid 6602] <... mount resumed>) = 0 [pid 6601] +++ exited with 0 +++ [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 6602] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] getdents64(3, [pid 6602] <... openat resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6602] chdir("./file0" [pid 4998] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6602] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6602] ioctl(4, LOOP_CLR_FD [pid 4998] lstat("./133/binderfs", [pid 6602] <... ioctl resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 152.980963][ T6602] NILFS (loop2): recovery complete [ 152.984057][ T6603] NILFS (loop1): recovery complete [ 152.995532][ T6609] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.008557][ T6608] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6602] close(4 [pid 4998] unlink("./133/binderfs" [pid 6602] <... close resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6601, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4996] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6602] creat("./bus", 000 [pid 4998] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6604] <... mount resumed>) = 0 [pid 6604] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6604] chdir("./file0") = 0 [pid 6602] <... creat resumed>) = 4 [pid 6604] ioctl(4, LOOP_CLR_FD [pid 6602] unlink("./bus" [pid 6604] <... ioctl resumed>) = 0 [pid 6604] close(4 [pid 6602] <... unlink resumed>) = 0 [pid 6604] <... close resumed>) = 0 [pid 6602] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6604] creat("./bus", 000 [pid 4997] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6603] <... mount resumed>) = 0 [pid 4997] fstat(3, [pid 6604] <... creat resumed>) = 4 [pid 6604] unlink("./bus") = 0 [pid 6604] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6603] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(3, [pid 6603] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6603] chdir("./file0" [pid 4997] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6603] <... chdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 153.021767][ T6610] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6603] ioctl(4, LOOP_CLR_FD) = 0 [pid 6602] <... pwritev2 resumed>) = 65007 [pid 4997] lstat("./133/binderfs", [pid 6602] exit_group(0 [pid 6603] close(4 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6603] <... close resumed>) = 0 [pid 4997] unlink("./133/binderfs" [pid 6602] <... exit_group resumed>) = ? [pid 6603] creat("./bus", 000 [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6603] <... creat resumed>) = 4 [pid 6603] unlink("./bus") = 0 [pid 6603] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6604] <... pwritev2 resumed>) = 65007 [pid 6604] exit_group(0) = ? [pid 6603] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6603] exit_group(0 [pid 4998] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6603] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6602] +++ exited with 0 +++ [pid 4996] lstat("./133/file0", [pid 4998] lstat("./133/file0", [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6602, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6604] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6604, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, [pid 4998] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./133/binderfs", [pid 4998] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./133/binderfs" [pid 4998] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 4 [pid 4993] <... unlink resumed>) = 0 [pid 4998] fstat(4, [pid 4996] fstat(4, [pid 4993] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4996] getdents64(4, [pid 4995] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(4, [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] close(4 [pid 4996] close(4 [pid 4995] fstat(3, [pid 4998] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] rmdir("./133/file0" [pid 4995] getdents64(3, [pid 4996] rmdir("./133/file0" [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] lstat("./133/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4996] getdents64(3, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] lstat("./130/binderfs", [pid 4998] close(3 [pid 4997] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(3 [pid 4998] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] rmdir("./133" [pid 4996] <... close resumed>) = 0 [pid 4995] unlink("./130/binderfs" [pid 4996] rmdir("./133" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] <... unlink resumed>) = 0 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4998] <... rmdir resumed>) = 0 [pid 4996] mkdir("./134", 0777 [pid 4998] mkdir("./134", 0777 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./133/file0" [pid 4996] <... mkdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4997] close(3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 4997] rmdir("./133" [pid 6603] +++ exited with 0 +++ [pid 4998] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] mkdir("./134", 0777 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6603, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] <... umount2 resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... mkdir resumed>) = 0 [pid 4993] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 3 [pid 4994] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./133/file0", [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6612 [pid 4997] close(3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6611 [pid 4994] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 4 [pid 4994] fstat(3, [pid 4993] fstat(4, [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6613 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6613 attached ./strace-static-x86_64: Process 6612 attached ./strace-static-x86_64: Process 6611 attached [pid 4995] <... umount2 resumed>) = 0 [pid 4994] getdents64(3, [pid 4993] getdents64(4, [pid 6613] chdir("./134" [pid 6612] chdir("./134" [pid 6611] chdir("./134" [pid 4995] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6613] <... chdir resumed>) = 0 [pid 6612] <... chdir resumed>) = 0 [pid 6611] <... chdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6613] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6612] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] lstat("./130/file0", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6613] <... prctl resumed>) = 0 [pid 6612] <... prctl resumed>) = 0 [pid 6611] <... prctl resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./132/binderfs", [pid 4993] getdents64(4, [pid 6613] setpgid(0, 0 [pid 6612] setpgid(0, 0 [pid 6611] setpgid(0, 0 [pid 4995] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6613] <... setpgid resumed>) = 0 [pid 6612] <... setpgid resumed>) = 0 [pid 6611] <... setpgid resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./132/binderfs" [pid 4993] close(4 [pid 6613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6613] <... openat resumed>) = 3 [pid 6612] <... openat resumed>) = 3 [pid 6611] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 4 [pid 4994] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./133/file0" [pid 6613] write(3, "1000", 4 [pid 6612] write(3, "1000", 4 [pid 6611] write(3, "1000", 4 [pid 4995] fstat(4, [pid 6613] <... write resumed>) = 4 [pid 6612] <... write resumed>) = 4 [pid 6611] <... write resumed>) = 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6613] close(3 [pid 6612] close(3 [pid 6611] close(3 [pid 4995] getdents64(4, [pid 6613] <... close resumed>) = 0 [pid 6612] <... close resumed>) = 0 [pid 6611] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(3, [pid 6613] symlink("/dev/binderfs", "./binderfs" [pid 6612] symlink("/dev/binderfs", "./binderfs" [pid 6611] symlink("/dev/binderfs", "./binderfs" [pid 4995] getdents64(4, [pid 6613] <... symlink resumed>) = 0 [pid 6612] <... symlink resumed>) = 0 [pid 6611] <... symlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6613] memfd_create("syzkaller", 0 [pid 6612] memfd_create("syzkaller", 0 [pid 6611] memfd_create("syzkaller", 0 [pid 4995] close(4 [pid 4993] close(3 [pid 6613] <... memfd_create resumed>) = 3 [pid 6612] <... memfd_create resumed>) = 3 [pid 6611] <... memfd_create resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 6613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] rmdir("./130/file0" [pid 4993] <... close resumed>) = 0 [pid 6613] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6612] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6611] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] rmdir("./133" [pid 4995] getdents64(3, [pid 4994] <... umount2 resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] close(3) = 0 [pid 4994] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] mkdir("./134", 0777 [pid 4995] rmdir("./130") = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... mkdir resumed>) = 0 [pid 4995] mkdir("./131", 0777 [pid 4994] lstat("./132/file0", [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4994] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] close(3) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] close(3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] fstat(4, [pid 4993] <... close resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6614 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6615 [pid 4994] close(4 [pid 6613] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... close resumed>) = 0 ./strace-static-x86_64: Process 6614 attached [pid 4994] rmdir("./132/file0" [pid 6614] chdir("./131") = 0 [pid 4994] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6615 attached [pid 6614] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6615] chdir("./134" [pid 6614] <... prctl resumed>) = 0 [pid 4994] getdents64(3, [pid 6615] <... chdir resumed>) = 0 [pid 6614] setpgid(0, 0 [pid 6615] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6614] <... setpgid resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6615] <... prctl resumed>) = 0 [pid 6614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] close(3 [pid 6615] setpgid(0, 0 [pid 6614] <... openat resumed>) = 3 [pid 6615] <... setpgid resumed>) = 0 [pid 6614] write(3, "1000", 4 [pid 4994] <... close resumed>) = 0 [pid 6615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6614] <... write resumed>) = 4 [pid 4994] rmdir("./132" [pid 6615] <... openat resumed>) = 3 [pid 6614] close(3 [pid 6615] write(3, "1000", 4 [pid 6614] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6615] <... write resumed>) = 4 [pid 6614] symlink("/dev/binderfs", "./binderfs" [pid 4994] mkdir("./133", 0777 [pid 6615] close(3 [pid 6614] <... symlink resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6615] <... close resumed>) = 0 [pid 6614] memfd_create("syzkaller", 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6615] symlink("/dev/binderfs", "./binderfs" [pid 6614] <... memfd_create resumed>) = 3 [pid 6615] <... symlink resumed>) = 0 [pid 6614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... openat resumed>) = 3 [pid 6615] memfd_create("syzkaller", 0 [pid 6614] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6615] <... memfd_create resumed>) = 3 [pid 6615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6615] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6612] <... write resumed>) = 2097152 [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6612] munmap(0x7f46b9f9b000, 2097152 [pid 6611] <... write resumed>) = 2097152 [pid 6612] <... munmap resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6616 [pid 6612] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6613] <... write resumed>) = 2097152 [pid 6612] <... openat resumed>) = 4 [pid 6612] ioctl(4, LOOP_SET_FD, 3 [pid 6611] munmap(0x7f46b9f9b000, 2097152 [pid 6613] munmap(0x7f46b9f9b000, 2097152 [pid 6611] <... munmap resumed>) = 0 [pid 6613] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 6616 attached [pid 6616] chdir("./133" [pid 6611] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6616] <... chdir resumed>) = 0 [pid 6614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6613] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6611] <... openat resumed>) = 4 [pid 6616] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6613] <... openat resumed>) = 4 [pid 6611] ioctl(4, LOOP_SET_FD, 3 [pid 6616] <... prctl resumed>) = 0 [pid 6613] ioctl(4, LOOP_SET_FD, 3 [pid 6612] <... ioctl resumed>) = 0 [pid 6616] setpgid(0, 0 [pid 6615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6614] <... write resumed>) = 2097152 [pid 6612] close(3 [pid 6611] <... ioctl resumed>) = 0 [pid 6616] <... setpgid resumed>) = 0 [pid 6613] <... ioctl resumed>) = 0 [pid 6612] <... close resumed>) = 0 [pid 6614] munmap(0x7f46b9f9b000, 2097152 [pid 6616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6613] close(3 [pid 6612] mkdir("./file0", 0777 [pid 6616] <... openat resumed>) = 3 [pid 6614] <... munmap resumed>) = 0 [pid 6613] <... close resumed>) = 0 [pid 6616] write(3, "1000", 4 [pid 6614] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6613] mkdir("./file0", 0777 [pid 6612] <... mkdir resumed>) = 0 [pid 6616] <... write resumed>) = 4 [pid 6614] <... openat resumed>) = 4 [pid 6613] <... mkdir resumed>) = 0 [pid 6612] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6611] close(3 [pid 6616] close(3 [pid 6614] ioctl(4, LOOP_SET_FD, 3 [pid 6613] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6616] <... close resumed>) = 0 [pid 6611] <... close resumed>) = 0 [ 153.361825][ T6612] loop5: detected capacity change from 0 to 4096 [ 153.373081][ T6611] loop3: detected capacity change from 0 to 4096 [ 153.381876][ T6613] loop4: detected capacity change from 0 to 4096 [ 153.405485][ T6614] loop2: detected capacity change from 0 to 4096 [pid 6616] symlink("/dev/binderfs", "./binderfs" [pid 6611] mkdir("./file0", 0777 [pid 6616] <... symlink resumed>) = 0 [pid 6616] memfd_create("syzkaller", 0) = 3 [pid 6616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6615] <... write resumed>) = 2097152 [pid 6614] <... ioctl resumed>) = 0 [pid 6611] <... mkdir resumed>) = 0 [ 153.414812][ T6612] NILFS (loop5): invalid segment: Checksum error in segment payload [ 153.428840][ T6612] NILFS (loop5): trying rollback from an earlier position [ 153.439311][ T6613] NILFS (loop4): invalid segment: Checksum error in segment payload [ 153.447210][ T6615] loop0: detected capacity change from 0 to 4096 [ 153.453120][ T6612] NILFS (loop5): recovery complete [pid 6615] munmap(0x7f46b9f9b000, 2097152 [pid 6614] close(3 [pid 6611] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6616] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6615] <... munmap resumed>) = 0 [pid 6614] <... close resumed>) = 0 [pid 6615] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6614] mkdir("./file0", 0777 [pid 6615] <... openat resumed>) = 4 [pid 6614] <... mkdir resumed>) = 0 [pid 6615] ioctl(4, LOOP_SET_FD, 3 [pid 6614] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6615] <... ioctl resumed>) = 0 [pid 6615] close(3) = 0 [pid 6615] mkdir("./file0", 0777) = 0 [pid 6615] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6612] <... mount resumed>) = 0 [ 153.459706][ T6611] NILFS (loop3): invalid segment: Checksum error in segment payload [ 153.468891][ T6611] NILFS (loop3): trying rollback from an earlier position [ 153.472292][ T6614] NILFS (loop2): invalid segment: Checksum error in segment payload [ 153.476491][ T6613] NILFS (loop4): trying rollback from an earlier position [ 153.489940][ T6617] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6612] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6612] chdir("./file0") = 0 [pid 6612] ioctl(4, LOOP_CLR_FD) = 0 [pid 6612] close(4) = 0 [pid 6616] <... write resumed>) = 2097152 [pid 6612] creat("./bus", 000 [pid 6616] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6616] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6616] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6616] close(3) = 0 [pid 6616] mkdir("./file0", 0777) = 0 [ 153.508002][ T6615] NILFS (loop0): invalid segment: Checksum error in segment payload [ 153.524968][ T6611] NILFS (loop3): recovery complete [ 153.529732][ T6614] NILFS (loop2): trying rollback from an earlier position [ 153.542900][ T6616] loop1: detected capacity change from 0 to 4096 [ 153.550414][ T6615] NILFS (loop0): trying rollback from an earlier position [pid 6616] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6611] <... mount resumed>) = 0 [pid 6611] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6611] chdir("./file0" [pid 6612] <... creat resumed>) = 4 [pid 6611] <... chdir resumed>) = 0 [pid 6612] unlink("./bus" [pid 6611] ioctl(4, LOOP_CLR_FD) = 0 [pid 6612] <... unlink resumed>) = 0 [pid 6612] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6611] close(4) = 0 [ 153.566260][ T6618] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.568459][ T6613] NILFS (loop4): recovery complete [ 153.604671][ T6616] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6611] creat("./bus", 000) = 4 [pid 6611] unlink("./bus") = 0 [pid 6611] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6614] <... mount resumed>) = 0 [pid 6613] <... mount resumed>) = 0 [pid 6612] <... pwritev2 resumed>) = 65007 [ 153.615698][ T6614] NILFS (loop2): recovery complete [ 153.618915][ T6616] NILFS (loop1): trying rollback from an earlier position [ 153.625941][ T6615] NILFS (loop0): recovery complete [ 153.638373][ T6620] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.647299][ T6619] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.653196][ T6616] NILFS (loop1): recovery complete [pid 6615] <... mount resumed>) = 0 [pid 6615] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6615] chdir("./file0") = 0 [pid 6615] ioctl(4, LOOP_CLR_FD) = 0 [pid 6615] close(4) = 0 [pid 6614] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6613] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6612] exit_group(0 [pid 6614] <... openat resumed>) = 3 [pid 6613] <... openat resumed>) = 3 [pid 6612] <... exit_group resumed>) = ? [pid 6614] chdir("./file0" [pid 6613] chdir("./file0" [pid 6611] <... pwritev2 resumed>) = 65007 [pid 6615] creat("./bus", 000 [pid 6614] <... chdir resumed>) = 0 [pid 6613] <... chdir resumed>) = 0 [pid 6614] ioctl(4, LOOP_CLR_FD [pid 6613] ioctl(4, LOOP_CLR_FD [pid 6611] exit_group(0 [pid 6614] <... ioctl resumed>) = 0 [pid 6613] <... ioctl resumed>) = 0 [pid 6614] close(4 [pid 6613] close(4 [pid 6614] <... close resumed>) = 0 [pid 6613] <... close resumed>) = 0 [pid 6614] creat("./bus", 000 [pid 6613] creat("./bus", 000 [pid 6611] <... exit_group resumed>) = ? [pid 6612] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6612, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./134/binderfs") = 0 [pid 4998] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6614] <... creat resumed>) = 4 [pid 6615] <... creat resumed>) = 4 [pid 6614] unlink("./bus" [pid 6613] <... creat resumed>) = 4 [pid 6611] +++ exited with 0 +++ [pid 6615] unlink("./bus" [pid 6613] unlink("./bus" [pid 6616] <... mount resumed>) = 0 [pid 6614] <... unlink resumed>) = 0 [pid 6615] <... unlink resumed>) = 0 [pid 6615] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6614] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6613] <... unlink resumed>) = 0 [pid 6616] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 153.664817][ T6621] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 153.702413][ T6622] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6613] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6611, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6616] <... openat resumed>) = 3 [pid 6615] <... pwritev2 resumed>) = 65007 [pid 6615] exit_group(0) = ? [pid 4996] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6616] chdir("./file0") = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6616] ioctl(4, LOOP_CLR_FD [pid 4996] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6616] <... ioctl resumed>) = 0 [pid 6616] close(4 [pid 4996] <... openat resumed>) = 3 [pid 6616] <... close resumed>) = 0 [pid 4996] fstat(3, [pid 6614] <... pwritev2 resumed>) = 65007 [pid 6614] exit_group(0) = ? [pid 6616] creat("./bus", 000 [pid 6613] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6615] +++ exited with 0 +++ [pid 6613] exit_group(0) = ? [pid 6616] <... creat resumed>) = 4 [pid 4998] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 6616] unlink("./bus" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] lstat("./134/file0", [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6615, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4993] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] lstat("./134/binderfs", [pid 4993] <... openat resumed>) = 3 [pid 6616] <... unlink resumed>) = 0 [pid 6616] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(4, [pid 4996] unlink("./134/binderfs" [pid 4993] getdents64(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4993] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6613] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6613, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4998] close(4 [pid 4993] lstat("./134/binderfs", [pid 4998] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] rmdir("./134/file0") = 0 [pid 4993] unlink("./134/binderfs" [pid 4998] getdents64(3, [pid 4997] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 4998] close(3 [pid 4997] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4998] rmdir("./134" [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... rmdir resumed>) = 0 [pid 4997] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] mkdir("./135", 0777 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... mkdir resumed>) = 0 [pid 4997] lstat("./134/binderfs", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] unlink("./134/binderfs" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... unlink resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6616] <... pwritev2 resumed>) = 65007 [pid 6616] exit_group(0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6623 [pid 6616] <... exit_group resumed>) = ? [pid 6614] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6614, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./131/binderfs") = 0 [pid 4995] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, ./strace-static-x86_64: Process 6623 attached 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6623] chdir("./135" [pid 4996] getdents64(4, [pid 6623] <... chdir resumed>) = 0 [pid 6616] +++ exited with 0 +++ [pid 4997] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 6623] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6616, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6623] <... prctl resumed>) = 0 [pid 6623] setpgid(0, 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6623] <... setpgid resumed>) = 0 [pid 4996] close(4 [pid 4994] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6623] <... openat resumed>) = 3 [pid 4997] lstat("./134/file0", [pid 4996] rmdir("./134/file0" [pid 4994] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] lstat("./134/file0", [pid 6623] write(3, "1000", 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6623] <... write resumed>) = 4 [pid 4997] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4994] fstat(3, [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6623] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6623] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] close(3 [pid 4994] getdents64(3, [pid 6623] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6623] <... symlink resumed>) = 0 [pid 4997] fstat(4, [pid 4996] rmdir("./134" [pid 4994] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6623] memfd_create("syzkaller", 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6623] <... memfd_create resumed>) = 3 [pid 4997] getdents64(4, [pid 4996] mkdir("./135", 0777 [pid 4994] lstat("./133/binderfs", [pid 4993] <... openat resumed>) = 4 [pid 6623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6623] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] getdents64(4, [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4994] unlink("./133/binderfs" [pid 4993] fstat(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] close(4 [pid 4996] <... openat resumed>) = 3 [pid 4994] <... unlink resumed>) = 0 [pid 4993] getdents64(4, [pid 4997] <... close resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] rmdir("./134/file0" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 6623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./131/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] getdents64(4, [pid 4993] close(4 [pid 4997] close(3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./131/file0" [pid 4997] <... close resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6624 [pid 4993] <... close resumed>) = 0 [pid 4997] rmdir("./134" [pid 4995] <... rmdir resumed>) = 0 [pid 4993] rmdir("./134/file0" [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./131" [pid 4997] mkdir("./135", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] mkdir("./132", 0777./strace-static-x86_64: Process 6624 attached [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] getdents64(3, [pid 6624] chdir("./135" [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6624] <... chdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6624] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... openat resumed>) = 3 [pid 4993] <... close resumed>) = 0 [pid 6624] <... prctl resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] rmdir("./134" [pid 6624] setpgid(0, 0 [pid 4997] close(3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6624] <... setpgid resumed>) = 0 [pid 6624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... rmdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] mkdir("./135", 0777 [pid 6624] <... openat resumed>) = 3 [pid 4995] close(3 [pid 6624] write(3, "1000", 4) = 4 [pid 4995] <... close resumed>) = 0 [pid 6624] close(3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6624] <... close resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6625 [pid 4993] <... mkdir resumed>) = 0 [pid 6624] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6626 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6624] memfd_create("syzkaller", 0) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 6625 attached [pid 6624] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6625] chdir("./135" [pid 4993] close(3 [pid 6625] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 6625] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6626 attached [pid 6625] <... prctl resumed>) = 0 [pid 4994] lstat("./133/file0", [pid 6626] chdir("./132" [pid 6625] setpgid(0, 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6626] <... chdir resumed>) = 0 [pid 6625] <... setpgid resumed>) = 0 [pid 6626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6627 [pid 6626] <... prctl resumed>) = 0 [pid 6625] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6626] setpgid(0, 0 [pid 6625] write(3, "1000", 4 [pid 4994] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6627 attached [pid 6626] <... setpgid resumed>) = 0 [pid 6625] <... write resumed>) = 4 [pid 6624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... openat resumed>) = 4 [pid 6626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6625] close(3 [pid 4994] fstat(4, [pid 6627] chdir("./135" [pid 6626] <... openat resumed>) = 3 [pid 6625] <... close resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6627] <... chdir resumed>) = 0 [pid 6626] write(3, "1000", 4 [pid 6625] symlink("/dev/binderfs", "./binderfs" [pid 4994] getdents64(4, [pid 6627] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6626] <... write resumed>) = 4 [pid 6625] <... symlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6627] <... prctl resumed>) = 0 [pid 6626] close(3 [pid 6625] memfd_create("syzkaller", 0 [pid 4994] getdents64(4, [pid 6627] setpgid(0, 0 [pid 6626] <... close resumed>) = 0 [pid 6625] <... memfd_create resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6627] <... setpgid resumed>) = 0 [pid 6626] symlink("/dev/binderfs", "./binderfs" [pid 6625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] close(4 [pid 6627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6626] <... symlink resumed>) = 0 [pid 6625] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... close resumed>) = 0 [pid 6627] <... openat resumed>) = 3 [pid 6626] memfd_create("syzkaller", 0 [pid 6625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] rmdir("./133/file0" [pid 6627] write(3, "1000", 4 [pid 6626] <... memfd_create resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 6627] <... write resumed>) = 4 [pid 6626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] getdents64(3, [pid 6627] close(3 [pid 6626] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6627] <... close resumed>) = 0 [pid 4994] close(3 [pid 6627] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./133" [pid 6627] <... symlink resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6627] memfd_create("syzkaller", 0 [pid 6626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6623] <... write resumed>) = 2097152 [pid 4994] mkdir("./134", 0777 [pid 6627] <... memfd_create resumed>) = 3 [pid 6623] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6623] <... munmap resumed>) = 0 [pid 6627] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] close(3) = 0 [pid 6623] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6623] <... openat resumed>) = 4 [pid 6623] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6628 [pid 6623] <... ioctl resumed>) = 0 [pid 6623] close(3) = 0 ./strace-static-x86_64: Process 6628 attached [pid 6623] mkdir("./file0", 0777 [pid 6628] chdir("./134" [pid 6627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6623] <... mkdir resumed>) = 0 [pid 6628] <... chdir resumed>) = 0 [pid 6623] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6628] setpgid(0, 0) = 0 [pid 6628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6628] write(3, "1000", 4) = 4 [pid 6628] close(3) = 0 [pid 6628] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6628] memfd_create("syzkaller", 0 [pid 6625] <... write resumed>) = 2097152 [pid 6628] <... memfd_create resumed>) = 3 [pid 6628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6624] <... write resumed>) = 2097152 [ 154.047567][ T6623] loop5: detected capacity change from 0 to 4096 [pid 6624] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6624] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6624] ioctl(4, LOOP_SET_FD, 3 [pid 6626] <... write resumed>) = 2097152 [pid 6625] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6625] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6626] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6625] <... openat resumed>) = 4 [pid 6625] ioctl(4, LOOP_SET_FD, 3 [pid 6626] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6626] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6625] <... ioctl resumed>) = 0 [pid 6625] close(3) = 0 [pid 6625] mkdir("./file0", 0777 [pid 6624] <... ioctl resumed>) = 0 [ 154.109600][ T6623] NILFS (loop5): invalid segment: Checksum error in segment payload [ 154.113300][ T6624] loop3: detected capacity change from 0 to 4096 [ 154.136537][ T6625] loop4: detected capacity change from 0 to 4096 [ 154.145295][ T6626] loop2: detected capacity change from 0 to 4096 [pid 6625] <... mkdir resumed>) = 0 [pid 6626] close(3 [pid 6624] close(3 [pid 6626] <... close resumed>) = 0 [pid 6625] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6624] <... close resumed>) = 0 [pid 6626] mkdir("./file0", 0777 [pid 6624] mkdir("./file0", 0777 [pid 6628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6626] <... mkdir resumed>) = 0 [pid 6624] <... mkdir resumed>) = 0 [pid 6627] <... write resumed>) = 2097152 [pid 6626] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6624] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 154.156857][ T6623] NILFS (loop5): trying rollback from an earlier position [pid 6627] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6628] <... write resumed>) = 2097152 [pid 6627] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6628] munmap(0x7f46b9f9b000, 2097152 [pid 6627] <... openat resumed>) = 4 [pid 6628] <... munmap resumed>) = 0 [ 154.187182][ T6625] NILFS (loop4): invalid segment: Checksum error in segment payload [ 154.198533][ T6623] NILFS (loop5): recovery complete [ 154.198587][ T6626] NILFS (loop2): invalid segment: Checksum error in segment payload [ 154.205206][ T6624] NILFS (loop3): invalid segment: Checksum error in segment payload [ 154.213437][ T6626] NILFS (loop2): trying rollback from an earlier position [ 154.221193][ T6625] NILFS (loop4): trying rollback from an earlier position [pid 6627] ioctl(4, LOOP_SET_FD, 3 [pid 6628] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6628] ioctl(4, LOOP_SET_FD, 3 [pid 6627] <... ioctl resumed>) = 0 [pid 6627] close(3 [pid 6623] <... mount resumed>) = 0 [pid 6627] <... close resumed>) = 0 [pid 6627] mkdir("./file0", 0777) = 0 [pid 6627] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6628] <... ioctl resumed>) = 0 [ 154.228084][ T6627] loop0: detected capacity change from 0 to 4096 [ 154.241591][ T6624] NILFS (loop3): trying rollback from an earlier position [ 154.249618][ T6628] loop1: detected capacity change from 0 to 4096 [ 154.253932][ T6626] NILFS (loop2): recovery complete [ 154.256240][ T6629] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.264371][ T6625] NILFS (loop4): recovery complete [pid 6623] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6623] chdir("./file0") = 0 [pid 6623] ioctl(4, LOOP_CLR_FD [pid 6626] <... mount resumed>) = 0 [pid 6623] <... ioctl resumed>) = 0 [pid 6628] close(3) = 0 [pid 6628] mkdir("./file0", 0777) = 0 [pid 6628] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6623] close(4 [pid 6626] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6623] <... close resumed>) = 0 [pid 6626] <... openat resumed>) = 3 [pid 6623] creat("./bus", 000 [pid 6626] chdir("./file0") = 0 [pid 6626] ioctl(4, LOOP_CLR_FD) = 0 [pid 6626] close(4) = 0 [ 154.282527][ T6627] NILFS (loop0): invalid segment: Checksum error in segment payload [ 154.284056][ T6630] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.305326][ T6627] NILFS (loop0): trying rollback from an earlier position [ 154.317184][ T6631] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.317886][ T6624] NILFS (loop3): recovery complete [pid 6626] creat("./bus", 000 [pid 6625] <... mount resumed>) = 0 [pid 6623] <... creat resumed>) = 4 [pid 6626] <... creat resumed>) = 4 [pid 6625] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6623] unlink("./bus" [pid 6626] unlink("./bus" [pid 6625] <... openat resumed>) = 3 [pid 6626] <... unlink resumed>) = 0 [pid 6625] chdir("./file0" [pid 6624] <... mount resumed>) = 0 [pid 6623] <... unlink resumed>) = 0 [pid 6625] <... chdir resumed>) = 0 [pid 6625] ioctl(4, LOOP_CLR_FD) = 0 [pid 6625] close(4) = 0 [pid 6625] creat("./bus", 000 [pid 6626] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6624] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 154.338222][ T6627] NILFS (loop0): recovery complete [ 154.346867][ T6628] NILFS (loop1): invalid segment: Checksum error in segment payload [ 154.349827][ T6632] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 154.371410][ T6628] NILFS (loop1): trying rollback from an earlier position [pid 6623] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6624] <... openat resumed>) = 3 [pid 6624] chdir("./file0") = 0 [pid 6624] ioctl(4, LOOP_CLR_FD) = 0 [pid 6626] <... pwritev2 resumed>) = 65007 [pid 6624] close(4 [pid 6623] <... pwritev2 resumed>) = 65007 [pid 6626] exit_group(0 [pid 6625] <... creat resumed>) = 4 [pid 6624] <... close resumed>) = 0 [pid 6623] exit_group(0 [pid 6627] <... mount resumed>) = 0 [pid 6626] <... exit_group resumed>) = ? [pid 6625] unlink("./bus" [pid 6624] creat("./bus", 000 [pid 6623] <... exit_group resumed>) = ? [pid 6627] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6625] <... unlink resumed>) = 0 [pid 6627] <... openat resumed>) = 3 [pid 6625] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6627] chdir("./file0") = 0 [pid 6627] ioctl(4, LOOP_CLR_FD) = 0 [pid 6627] close(4) = 0 [pid 6627] creat("./bus", 000 [pid 6624] <... creat resumed>) = 4 [pid 6623] +++ exited with 0 +++ [pid 6626] +++ exited with 0 +++ [pid 6624] unlink("./bus" [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6623, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6626, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6627] <... creat resumed>) = 4 [pid 6624] <... unlink resumed>) = 0 [ 154.382619][ T6633] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6627] unlink("./bus" [pid 6624] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6627] <... unlink resumed>) = 0 [pid 4998] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6627] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4995] fstat(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4995] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6625] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6625] exit_group(0 [pid 6624] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6625] <... exit_group resumed>) = ? [pid 6624] exit_group(0 [pid 4998] lstat("./135/binderfs", [pid 4995] lstat("./132/binderfs", [pid 6627] <... pwritev2 resumed>) = 65007 [pid 6624] <... exit_group resumed>) = ? [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 154.419068][ T6628] NILFS (loop1): recovery complete [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6627] exit_group(0 [pid 4998] unlink("./135/binderfs" [pid 4995] unlink("./132/binderfs" [pid 6627] <... exit_group resumed>) = ? [pid 4998] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6628] <... mount resumed>) = 0 [pid 4998] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6628] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6628] chdir("./file0") = 0 [pid 6628] ioctl(4, LOOP_CLR_FD) = 0 [pid 6628] close(4) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6628] creat("./bus", 000 [pid 4995] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6625] +++ exited with 0 +++ [pid 6624] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6625, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6624, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] lstat("./132/file0", [pid 4997] <... restart_syscall resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6627] +++ exited with 0 +++ [pid 4997] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6627, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4997] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(3, [pid 4996] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 4997] getdents64(3, [pid 4995] <... openat resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] getdents64(3, [pid 4997] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./135/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./135/binderfs", [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./135/binderfs" [pid 4996] unlink("./135/binderfs" [pid 4995] getdents64(4, [pid 4993] fstat(3, [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4993] getdents64(3, [pid 4997] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] lstat("./135/binderfs", [pid 4995] close(4) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./135/binderfs" [pid 4995] rmdir("./132/file0" [pid 4993] <... unlink resumed>) = 0 [pid 6628] <... creat resumed>) = 4 [pid 4993] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6628] unlink("./bus" [pid 4995] <... rmdir resumed>) = 0 [pid 6628] <... unlink resumed>) = 0 [pid 4995] getdents64(3, [ 154.461765][ T6634] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6628] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./132") = 0 [pid 4995] mkdir("./133", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6628] <... pwritev2 resumed>) = 65007 [pid 4995] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 6628] exit_group(0 [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6628] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./135/file0", [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6635 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6635 attached [pid 6635] chdir("./133" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6635] <... chdir resumed>) = 0 [pid 6635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6635] setpgid(0, 0 [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 6635] <... setpgid resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 6635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6635] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(4 [pid 4996] lstat("./135/file0", [pid 6635] write(3, "1000", 4) = 4 [pid 6635] close(3 [pid 4998] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6635] <... close resumed>) = 0 [pid 4998] rmdir("./135/file0" [pid 4996] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6635] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4996] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6635] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4998] close(3 [pid 4996] fstat(4, [pid 4993] lstat("./135/file0", [pid 6635] memfd_create("syzkaller", 0 [pid 6628] +++ exited with 0 +++ [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6635] <... memfd_create resumed>) = 3 [pid 4998] rmdir("./135" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(4, [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6628, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] lstat("./135/file0", [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6635] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] mkdir("./136", 0777 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] close(4 [pid 4993] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 4997] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4994] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(4, [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./135/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... rmdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(4, [pid 4998] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4996] getdents64(3, [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] fstat(3, [pid 4993] getdents64(4, [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4993] close(4 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6636 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] rmdir("./135" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4994] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./135/file0" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] mkdir("./136", 0777 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... rmdir resumed>) = 0 [pid 4997] close(4 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] lstat("./134/binderfs", [pid 4993] getdents64(3, [pid 4997] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] rmdir("./135/file0" [pid 4996] <... openat resumed>) = 3 [pid 4994] unlink("./134/binderfs" [pid 4993] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./135"./strace-static-x86_64: Process 6636 attached [pid 6635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 6636] chdir("./136" [pid 4997] close(3 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6636] <... chdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] rmdir("./135" [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] mkdir("./136", 0777 [pid 6636] <... prctl resumed>) = 0 [pid 6635] <... write resumed>) = 2097152 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... mkdir resumed>) = 0 [pid 6635] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6637 [pid 4994] lstat("./134/file0", [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 6635] <... munmap resumed>) = 0 [pid 4994] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6635] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6635] <... openat resumed>) = 4 [pid 4994] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 6636] setpgid(0, 0 [pid 6635] ioctl(4, LOOP_SET_FD, 3 [pid 4997] mkdir("./136", 0777 [pid 4994] <... openat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 6636] <... setpgid resumed>) = 0 [pid 4994] fstat(4, [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6636] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] getdents64(4, [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6638 [pid 6636] write(3, "1000", 4 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6636] <... write resumed>) = 4 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] getdents64(4, [pid 6636] close(3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6636] <... close resumed>) = 0 [pid 4997] close(3 [pid 4994] close(4./strace-static-x86_64: Process 6638 attached [pid 6636] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6636] <... symlink resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] rmdir("./134/file0" [pid 6638] chdir("./136" [pid 6636] memfd_create("syzkaller", 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6638] <... chdir resumed>) = 0 [pid 6636] <... memfd_create resumed>) = 3 [pid 4994] getdents64(3, [pid 6638] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6639 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6638] <... prctl resumed>) = 0 [pid 6636] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] close(3 [pid 6638] setpgid(0, 0 [pid 4994] <... close resumed>) = 0 [pid 6638] <... setpgid resumed>) = 0 [pid 4994] rmdir("./134" [pid 6638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... rmdir resumed>) = 0 [pid 6638] <... openat resumed>) = 3 [pid 4994] mkdir("./135", 0777 [pid 6638] write(3, "1000", 4 [pid 4994] <... mkdir resumed>) = 0 [pid 6638] <... write resumed>) = 4 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6638] close(3 [pid 6635] <... ioctl resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6638] <... close resumed>) = 0 [pid 6635] close(3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6638] symlink("/dev/binderfs", "./binderfs" [pid 6635] <... close resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6638] <... symlink resumed>) = 0 [pid 6635] mkdir("./file0", 0777 [pid 4994] close(3 [pid 6638] memfd_create("syzkaller", 0 [pid 6635] <... mkdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6638] <... memfd_create resumed>) = 3 [pid 6635] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6640 ./strace-static-x86_64: Process 6639 attached [pid 6636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6639] chdir("./136") = 0 ./strace-static-x86_64: Process 6637 attached [pid 6639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6637] chdir("./136"./strace-static-x86_64: Process 6640 attached [pid 6639] setpgid(0, 0 [pid 6637] <... chdir resumed>) = 0 [ 154.670117][ T6635] loop2: detected capacity change from 0 to 4096 [pid 6640] chdir("./135" [pid 6639] <... setpgid resumed>) = 0 [pid 6637] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6640] <... chdir resumed>) = 0 [pid 6639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6637] <... prctl resumed>) = 0 [pid 6640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6639] <... openat resumed>) = 3 [pid 6637] setpgid(0, 0 [pid 6640] <... prctl resumed>) = 0 [pid 6639] write(3, "1000", 4 [pid 6637] <... setpgid resumed>) = 0 [pid 6640] setpgid(0, 0 [pid 6639] <... write resumed>) = 4 [pid 6637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6640] <... setpgid resumed>) = 0 [pid 6639] close(3 [pid 6640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6639] <... close resumed>) = 0 [pid 6637] <... openat resumed>) = 3 [pid 6640] <... openat resumed>) = 3 [pid 6639] symlink("/dev/binderfs", "./binderfs" [pid 6637] write(3, "1000", 4 [pid 6640] write(3, "1000", 4) = 4 [pid 6639] <... symlink resumed>) = 0 [pid 6637] <... write resumed>) = 4 [pid 6640] close(3 [pid 6637] close(3 [pid 6639] memfd_create("syzkaller", 0 [pid 6640] <... close resumed>) = 0 [pid 6639] <... memfd_create resumed>) = 3 [pid 6637] <... close resumed>) = 0 [pid 6640] symlink("/dev/binderfs", "./binderfs" [pid 6639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6637] symlink("/dev/binderfs", "./binderfs" [pid 6640] <... symlink resumed>) = 0 [pid 6639] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6640] memfd_create("syzkaller", 0 [pid 6637] <... symlink resumed>) = 0 [pid 6640] <... memfd_create resumed>) = 3 [pid 6640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6637] memfd_create("syzkaller", 0) = 3 [ 154.737437][ T6635] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6638] <... write resumed>) = 2097152 [pid 6636] <... write resumed>) = 2097152 [pid 6636] munmap(0x7f46b9f9b000, 2097152) = 0 [ 154.783778][ T6635] NILFS (loop2): trying rollback from an earlier position [pid 6636] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6636] ioctl(4, LOOP_SET_FD, 3 [pid 6638] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6638] ioctl(4, LOOP_SET_FD, 3 [pid 6637] <... write resumed>) = 2097152 [pid 6639] <... write resumed>) = 2097152 [pid 6637] munmap(0x7f46b9f9b000, 2097152 [pid 6636] <... ioctl resumed>) = 0 [pid 6636] close(3) = 0 [pid 6638] <... ioctl resumed>) = 0 [pid 6638] close(3) = 0 [pid 6639] munmap(0x7f46b9f9b000, 2097152 [pid 6636] mkdir("./file0", 0777) = 0 [pid 6636] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6638] mkdir("./file0", 0777) = 0 [pid 6638] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6637] <... munmap resumed>) = 0 [pid 6637] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 154.847826][ T6636] loop5: detected capacity change from 0 to 4096 [ 154.853300][ T6638] loop0: detected capacity change from 0 to 4096 [ 154.862703][ T6635] NILFS (loop2): recovery complete [ 154.884535][ T6641] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6639] <... munmap resumed>) = 0 [pid 6640] <... write resumed>) = 2097152 [pid 6637] ioctl(4, LOOP_SET_FD, 3 [pid 6635] <... mount resumed>) = 0 [pid 6640] munmap(0x7f46b9f9b000, 2097152 [pid 6639] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6637] <... ioctl resumed>) = 0 [pid 6635] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6640] <... munmap resumed>) = 0 [pid 6639] <... openat resumed>) = 4 [pid 6635] <... openat resumed>) = 3 [pid 6639] ioctl(4, LOOP_SET_FD, 3 [pid 6635] chdir("./file0") = 0 [pid 6640] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6635] ioctl(4, LOOP_CLR_FD [pid 6640] <... openat resumed>) = 4 [pid 6635] <... ioctl resumed>) = 0 [pid 6640] ioctl(4, LOOP_SET_FD, 3 [ 154.890068][ T6636] NILFS (loop5): invalid segment: Checksum error in segment payload [ 154.896407][ T6638] NILFS (loop0): invalid segment: Checksum error in segment payload [ 154.903697][ T6637] loop3: detected capacity change from 0 to 4096 [ 154.912859][ T6636] NILFS (loop5): trying rollback from an earlier position [ 154.925010][ T6638] NILFS (loop0): trying rollback from an earlier position [ 154.935457][ T6639] loop4: detected capacity change from 0 to 4096 [pid 6635] close(4 [pid 6640] <... ioctl resumed>) = 0 [pid 6639] <... ioctl resumed>) = 0 [pid 6637] close(3 [pid 6635] <... close resumed>) = 0 [pid 6640] close(3 [pid 6639] close(3 [pid 6637] <... close resumed>) = 0 [pid 6635] creat("./bus", 000 [pid 6640] <... close resumed>) = 0 [pid 6639] <... close resumed>) = 0 [pid 6637] mkdir("./file0", 0777 [pid 6640] mkdir("./file0", 0777 [pid 6639] mkdir("./file0", 0777 [pid 6637] <... mkdir resumed>) = 0 [pid 6640] <... mkdir resumed>) = 0 [pid 6639] <... mkdir resumed>) = 0 [pid 6637] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6639] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6640] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6635] <... creat resumed>) = 4 [pid 6636] <... mount resumed>) = 0 [pid 6635] unlink("./bus" [pid 6636] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 154.944968][ T6640] loop1: detected capacity change from 0 to 4096 [ 154.956299][ T6636] NILFS (loop5): recovery complete [ 154.957665][ T6638] NILFS (loop0): recovery complete [ 154.983454][ T6642] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6636] chdir("./file0") = 0 [pid 6636] ioctl(4, LOOP_CLR_FD) = 0 [pid 6636] close(4) = 0 [pid 6635] <... unlink resumed>) = 0 [pid 6636] creat("./bus", 000 [ 154.988698][ T6637] NILFS (loop3): invalid segment: Checksum error in segment payload [ 155.002544][ T6639] NILFS (loop4): invalid segment: Checksum error in segment payload [ 155.010962][ T6640] NILFS (loop1): invalid segment: Checksum error in segment payload [ 155.019315][ T6639] NILFS (loop4): trying rollback from an earlier position [ 155.033398][ T6640] NILFS (loop1): trying rollback from an earlier position [pid 6635] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6638] <... mount resumed>) = 0 [pid 6635] <... pwritev2 resumed>) = 65007 [pid 6638] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6635] exit_group(0 [pid 6638] chdir("./file0" [pid 6635] <... exit_group resumed>) = ? [pid 6638] <... chdir resumed>) = 0 [pid 6636] <... creat resumed>) = 4 [pid 6636] unlink("./bus" [pid 6638] ioctl(4, LOOP_CLR_FD) = 0 [pid 6638] close(4 [pid 6636] <... unlink resumed>) = 0 [pid 6638] <... close resumed>) = 0 [pid 6636] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6638] creat("./bus", 000 [pid 6635] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6635, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6638] <... creat resumed>) = 4 [pid 6638] unlink("./bus" [pid 4995] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6638] <... unlink resumed>) = 0 [ 155.037699][ T6643] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.052179][ T6637] NILFS (loop3): trying rollback from an earlier position [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6638] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 155.090905][ T6640] NILFS (loop1): recovery complete [pid 4995] lstat("./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./133/binderfs") = 0 [pid 4995] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6638] <... pwritev2 resumed>) = 65007 [pid 6636] <... pwritev2 resumed>) = 65007 [pid 6640] <... mount resumed>) = 0 [pid 6636] exit_group(0) = ? [pid 6640] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6638] exit_group(0 [pid 6637] <... mount resumed>) = 0 [pid 6636] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6636, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6640] <... openat resumed>) = 3 [pid 6638] <... exit_group resumed>) = ? [pid 6637] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] fstat(3, [pid 6640] chdir("./file0" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./136/binderfs", [pid 6640] <... chdir resumed>) = 0 [pid 6637] <... openat resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6640] ioctl(4, LOOP_CLR_FD [pid 6637] chdir("./file0" [pid 4998] unlink("./136/binderfs" [pid 6640] <... ioctl resumed>) = 0 [pid 6638] +++ exited with 0 +++ [pid 6637] <... chdir resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6638, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=8 /* 0.08 s */} --- [pid 6640] close(4 [pid 6637] ioctl(4, LOOP_CLR_FD [pid 4998] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6640] <... close resumed>) = 0 [pid 6637] <... ioctl resumed>) = 0 [pid 4995] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6640] creat("./bus", 000 [pid 6637] close(4) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6637] creat("./bus", 000 [pid 6640] <... creat resumed>) = 4 [pid 6637] <... creat resumed>) = 4 [pid 4995] lstat("./133/file0", [pid 6640] unlink("./bus" [pid 6637] unlink("./bus" [pid 6640] <... unlink resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 155.114588][ T6637] NILFS (loop3): recovery complete [ 155.121580][ T6644] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.133065][ T6645] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.154681][ T6639] NILFS (loop4): recovery complete [pid 6640] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6637] <... unlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6637] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 6639] <... mount resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6640] <... pwritev2 resumed>) = 65007 [pid 6639] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6640] exit_group(0 [pid 6639] <... openat resumed>) = 3 [pid 6637] <... pwritev2 resumed>) = 65007 [pid 4995] getdents64(4, [pid 4993] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = 0 [pid 6640] <... exit_group resumed>) = ? [pid 6639] chdir("./file0" [pid 6637] exit_group(0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6637] <... exit_group resumed>) = ? [pid 4995] getdents64(4, [pid 6639] <... chdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] fstat(3, [pid 6639] ioctl(4, LOOP_CLR_FD [pid 4995] close(4) = 0 [pid 4995] rmdir("./133/file0" [pid 6639] <... ioctl resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6639] close(4 [pid 4995] getdents64(3, [pid 6639] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 6639] creat("./bus", 000 [pid 4998] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] lstat("./136/file0", [pid 4995] rmdir("./133" [pid 4993] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] mkdir("./134", 0777 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6639] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... mkdir resumed>) = 0 [ 155.196127][ T6646] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] lstat("./136/binderfs", [pid 6639] unlink("./bus" [pid 4998] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 3 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6639] <... unlink resumed>) = 0 [pid 4998] fstat(4, [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] unlink("./136/binderfs" [pid 6639] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6637] +++ exited with 0 +++ [pid 4998] getdents64(4, [pid 4995] close(3 [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6637, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4995] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6647 [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./136/file0" [pid 4996] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(3, [pid 4996] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4998] close(3 [pid 4996] fstat(3, [pid 4998] <... close resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] rmdir("./136" [pid 4996] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] mkdir("./137", 0777 [pid 4996] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] lstat("./136/binderfs", [pid 4998] <... openat resumed>) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] unlink("./136/binderfs"./strace-static-x86_64: Process 6647 attached [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... unlink resumed>) = 0 [pid 6647] chdir("./134" [pid 4998] close(3 [pid 4996] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6647] <... chdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 6647] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6647] <... prctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6647] setpgid(0, 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6648 [pid 4996] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6647] <... setpgid resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] lstat("./136/file0", [pid 6647] <... openat resumed>) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6647] write(3, "1000", 4 [pid 4996] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6647] <... write resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6647] close(3 [pid 4996] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6647] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 6647] symlink("/dev/binderfs", "./binderfs" [pid 4996] fstat(4, [pid 6647] <... symlink resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6647] memfd_create("syzkaller", 0 [pid 4996] getdents64(4, [pid 6647] <... memfd_create resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(4, [pid 6647] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./136/file0"./strace-static-x86_64: Process 6648 attached ) = 0 [pid 6648] chdir("./137" [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 6648] <... chdir resumed>) = 0 [pid 4996] rmdir("./136" [pid 6648] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... rmdir resumed>) = 0 [pid 6648] <... prctl resumed>) = 0 [pid 4996] mkdir("./137", 0777 [pid 6648] setpgid(0, 0 [pid 4996] <... mkdir resumed>) = 0 [pid 6648] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6639] <... pwritev2 resumed>) = 65007 [pid 4996] <... openat resumed>) = 3 [pid 6648] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6648] write(3, "1000", 4 [pid 4996] <... ioctl resumed>) = 0 [pid 6648] <... write resumed>) = 4 [pid 4996] close(3 [pid 6648] close(3 [pid 4996] <... close resumed>) = 0 [pid 6648] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6648] symlink("/dev/binderfs", "./binderfs" [pid 6639] exit_group(0 [pid 6648] <... symlink resumed>) = 0 [pid 6640] +++ exited with 0 +++ [pid 6639] <... exit_group resumed>) = ? [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6649 [pid 6648] memfd_create("syzkaller", 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6640, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6648] <... memfd_create resumed>) = 3 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 6648] <... mmap resumed>) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6649 attached [pid 6649] chdir("./137" [pid 4994] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6649] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6649] setpgid(0, 0) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] fstat(3, [pid 6649] <... openat resumed>) = 3 [pid 6649] write(3, "1000", 4 [pid 6647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6649] <... write resumed>) = 4 [pid 6649] close(3 [pid 4994] getdents64(3, [pid 6649] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6649] symlink("/dev/binderfs", "./binderfs" [pid 4994] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6649] <... symlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6649] memfd_create("syzkaller", 0 [pid 4994] lstat("./135/binderfs", [pid 6649] <... memfd_create resumed>) = 3 [pid 6649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] unlink("./135/binderfs" [pid 4993] <... umount2 resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 6639] +++ exited with 0 +++ [pid 4994] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6639, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./136/file0", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./136/binderfs") = 0 [pid 4997] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./136/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4994] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./136" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./135/file0", [pid 4993] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] mkdir("./137", 0777 [pid 4994] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6647] <... write resumed>) = 2097152 [pid 4993] <... mkdir resumed>) = 0 [pid 6649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 4 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4994] fstat(4, [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./136/file0", [pid 4994] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, [pid 4994] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4994] close(4 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6650 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 6647] munmap(0x7f46b9f9b000, 2097152 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./136/file0" [pid 4994] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6647] <... munmap resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] rmdir("./135/file0" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6647] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4997] close(3 [pid 6647] <... openat resumed>) = 4 [pid 4997] <... close resumed>) = 0 [pid 6647] ioctl(4, LOOP_SET_FD, 3 [pid 4997] rmdir("./136"./strace-static-x86_64: Process 6650 attached ) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] mkdir("./137", 0777 [pid 6650] chdir("./137" [pid 4997] <... mkdir resumed>) = 0 [pid 4994] getdents64(3, [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6650] <... chdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6650] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6648] <... write resumed>) = 2097152 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6651 ./strace-static-x86_64: Process 6651 attached [pid 6651] chdir("./137" [pid 6648] munmap(0x7f46b9f9b000, 2097152 [pid 4994] close(3 [pid 6650] <... prctl resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6650] setpgid(0, 0 [pid 4994] rmdir("./135" [pid 6651] <... chdir resumed>) = 0 [pid 6651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6651] setpgid(0, 0) = 0 [pid 6650] <... setpgid resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6648] <... munmap resumed>) = 0 [pid 4994] mkdir("./136", 0777 [pid 6651] <... openat resumed>) = 3 [pid 6651] write(3, "1000", 4 [pid 6648] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6651] <... write resumed>) = 4 [pid 6650] <... openat resumed>) = 3 [pid 6648] <... openat resumed>) = 4 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6651] close(3 [pid 6648] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... openat resumed>) = 3 [pid 6650] write(3, "1000", 4 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6651] <... close resumed>) = 0 [pid 6650] <... write resumed>) = 4 [pid 6649] <... write resumed>) = 2097152 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6651] symlink("/dev/binderfs", "./binderfs" [pid 6647] <... ioctl resumed>) = 0 [pid 6650] close(3 [pid 4994] close(3 [pid 6651] <... symlink resumed>) = 0 [pid 6650] <... close resumed>) = 0 [pid 6647] close(3 [pid 4994] <... close resumed>) = 0 [pid 6651] memfd_create("syzkaller", 0 [pid 6650] symlink("/dev/binderfs", "./binderfs" [pid 6647] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6651] <... memfd_create resumed>) = 3 [pid 6647] mkdir("./file0", 0777 [pid 6651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6647] <... mkdir resumed>) = 0 [pid 6651] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6650] <... symlink resumed>) = 0 [pid 6647] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6652 ./strace-static-x86_64: Process 6652 attached [pid 6650] memfd_create("syzkaller", 0 [pid 6649] munmap(0x7f46b9f9b000, 2097152 [pid 6652] chdir("./136" [pid 6650] <... memfd_create resumed>) = 3 [pid 6649] <... munmap resumed>) = 0 [pid 6652] <... chdir resumed>) = 0 [pid 6650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6649] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6650] <... mmap resumed>) = 0x7f46b9f9b000 [ 155.440083][ T6647] loop2: detected capacity change from 0 to 4096 [ 155.469133][ T6648] loop5: detected capacity change from 0 to 4096 [pid 6649] ioctl(4, LOOP_SET_FD, 3 [pid 6652] <... prctl resumed>) = 0 [pid 6652] setpgid(0, 0) = 0 [pid 6652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6652] write(3, "1000", 4 [pid 6648] <... ioctl resumed>) = 0 [pid 6652] <... write resumed>) = 4 [pid 6648] close(3 [pid 6652] close(3 [pid 6648] <... close resumed>) = 0 [pid 6652] <... close resumed>) = 0 [pid 6648] mkdir("./file0", 0777 [pid 6652] symlink("/dev/binderfs", "./binderfs" [pid 6648] <... mkdir resumed>) = 0 [pid 6652] <... symlink resumed>) = 0 [pid 6648] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6652] memfd_create("syzkaller", 0 [pid 6651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6649] <... ioctl resumed>) = 0 [ 155.503965][ T6649] loop3: detected capacity change from 0 to 4096 [ 155.517151][ T6647] NILFS (loop2): invalid segment: Checksum error in segment payload [ 155.537810][ T6648] NILFS (loop5): invalid segment: Checksum error in segment payload [ 155.544516][ T6647] NILFS (loop2): trying rollback from an earlier position [pid 6652] <... memfd_create resumed>) = 3 [pid 6652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6649] close(3) = 0 [pid 6652] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6649] mkdir("./file0", 0777) = 0 [ 155.547254][ T6648] NILFS (loop5): trying rollback from an earlier position [ 155.581834][ T6648] NILFS (loop5): recovery complete [ 155.587481][ T6649] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6649] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6650] <... write resumed>) = 2097152 [pid 6651] <... write resumed>) = 2097152 [pid 6650] munmap(0x7f46b9f9b000, 2097152 [pid 6651] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6650] <... munmap resumed>) = 0 [pid 6650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6651] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6650] ioctl(4, LOOP_SET_FD, 3 [pid 6651] <... openat resumed>) = 4 [ 155.606294][ T6649] NILFS (loop3): trying rollback from an earlier position [ 155.613615][ T6647] NILFS (loop2): recovery complete [ 155.630831][ T6650] loop0: detected capacity change from 0 to 4096 [ 155.632481][ T6651] loop4: detected capacity change from 0 to 4096 [ 155.645304][ T6653] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6651] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6651] close(3) = 0 [pid 6651] mkdir("./file0", 0777 [pid 6650] <... ioctl resumed>) = 0 [pid 6647] <... mount resumed>) = 0 [pid 6648] <... mount resumed>) = 0 [pid 6650] close(3 [pid 6648] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6647] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6650] <... close resumed>) = 0 [pid 6648] <... openat resumed>) = 3 [pid 6647] <... openat resumed>) = 3 [pid 6650] mkdir("./file0", 0777 [pid 6648] chdir("./file0" [pid 6647] chdir("./file0" [pid 6652] <... write resumed>) = 2097152 [pid 6651] <... mkdir resumed>) = 0 [pid 6650] <... mkdir resumed>) = 0 [pid 6648] <... chdir resumed>) = 0 [pid 6647] <... chdir resumed>) = 0 [pid 6652] munmap(0x7f46b9f9b000, 2097152 [pid 6651] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6650] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6648] ioctl(4, LOOP_CLR_FD [pid 6647] ioctl(4, LOOP_CLR_FD [pid 6652] <... munmap resumed>) = 0 [pid 6648] <... ioctl resumed>) = 0 [pid 6647] <... ioctl resumed>) = 0 [pid 6648] close(4 [pid 6647] close(4 [pid 6648] <... close resumed>) = 0 [pid 6647] <... close resumed>) = 0 [pid 6648] creat("./bus", 000 [pid 6647] creat("./bus", 000 [pid 6652] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6649] <... mount resumed>) = 0 [ 155.647141][ T6654] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.656866][ T6649] NILFS (loop3): recovery complete [ 155.689766][ T6655] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6652] <... openat resumed>) = 4 [pid 6652] ioctl(4, LOOP_SET_FD, 3 [pid 6649] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6648] <... creat resumed>) = 4 [pid 6652] <... ioctl resumed>) = 0 [pid 6649] <... openat resumed>) = 3 [pid 6648] unlink("./bus" [pid 6652] close(3 [pid 6649] chdir("./file0" [pid 6652] <... close resumed>) = 0 [pid 6649] <... chdir resumed>) = 0 [pid 6652] mkdir("./file0", 0777 [pid 6649] ioctl(4, LOOP_CLR_FD [pid 6648] <... unlink resumed>) = 0 [pid 6652] <... mkdir resumed>) = 0 [pid 6647] <... creat resumed>) = 4 [pid 6649] <... ioctl resumed>) = 0 [pid 6652] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6649] close(4 [pid 6648] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6647] unlink("./bus" [pid 6649] <... close resumed>) = 0 [pid 6649] creat("./bus", 000 [pid 6647] <... unlink resumed>) = 0 [ 155.696429][ T6650] NILFS (loop0): invalid segment: Checksum error in segment payload [ 155.709738][ T6651] NILFS (loop4): invalid segment: Checksum error in segment payload [ 155.711261][ T6650] NILFS (loop0): trying rollback from an earlier position [ 155.725458][ T6652] loop1: detected capacity change from 0 to 4096 [ 155.726097][ T6651] NILFS (loop4): trying rollback from an earlier position [pid 6647] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6649] <... creat resumed>) = 4 [pid 6649] unlink("./bus" [pid 6647] <... pwritev2 resumed>) = 65007 [pid 6647] exit_group(0) = ? [pid 6649] <... unlink resumed>) = 0 [pid 6649] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6648] <... pwritev2 resumed>) = 65007 [ 155.763489][ T6652] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6648] exit_group(0 [pid 6649] <... pwritev2 resumed>) = 65007 [pid 6648] <... exit_group resumed>) = ? [pid 6647] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6647, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=8 /* 0.08 s */} --- [pid 6649] exit_group(0) = ? [pid 4995] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./134/binderfs") = 0 [ 155.813686][ T6650] NILFS (loop0): recovery complete [pid 4995] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6649] +++ exited with 0 +++ [pid 6648] +++ exited with 0 +++ [pid 6650] <... mount resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6648, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6649, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... restart_syscall resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4998] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4996] fstat(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6650] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] getdents64(3, [pid 4996] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6650] <... openat resumed>) = 3 [pid 4998] lstat("./137/binderfs", [pid 4996] lstat("./137/binderfs", [pid 4995] <... umount2 resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./137/binderfs" [pid 4996] unlink("./137/binderfs" [pid 4998] <... unlink resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 6650] chdir("./file0" [pid 4998] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6650] <... chdir resumed>) = 0 [pid 4995] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6650] ioctl(4, LOOP_CLR_FD [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 6650] <... ioctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [ 155.843482][ T6652] NILFS (loop1): trying rollback from an earlier position [ 155.854025][ T6656] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.872474][ T6651] NILFS (loop4): recovery complete [ 155.879360][ T6652] NILFS (loop1): recovery complete [pid 6650] close(4 [pid 4995] rmdir("./134/file0" [pid 6652] <... mount resumed>) = 0 [pid 6650] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6652] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6650] creat("./bus", 000 [pid 4996] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 6652] <... openat resumed>) = 3 [pid 6650] <... creat resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6652] chdir("./file0" [pid 6650] unlink("./bus" [pid 4996] lstat("./137/file0", [pid 6652] <... chdir resumed>) = 0 [pid 6650] <... unlink resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 6652] ioctl(4, LOOP_CLR_FD [pid 6650] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6652] <... ioctl resumed>) = 0 [pid 6651] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6652] close(4 [pid 6651] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6650] <... pwritev2 resumed>) = 65007 [pid 4996] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] close(3 [pid 6652] <... close resumed>) = 0 [pid 6651] <... openat resumed>) = 3 [pid 6650] exit_group(0 [pid 4996] <... openat resumed>) = 4 [pid 4995] <... close resumed>) = 0 [pid 6652] creat("./bus", 000 [pid 6651] chdir("./file0" [pid 6650] <... exit_group resumed>) = ? [pid 4996] fstat(4, [pid 4995] rmdir("./134" [pid 6652] <... creat resumed>) = 4 [pid 6651] <... chdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6652] unlink("./bus" [pid 6651] ioctl(4, LOOP_CLR_FD [pid 4996] getdents64(4, [pid 4995] <... rmdir resumed>) = 0 [pid 6652] <... unlink resumed>) = 0 [pid 6651] <... ioctl resumed>) = 0 [pid 4998] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [ 155.893640][ T6657] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 155.932794][ T6658] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] mkdir("./135", 0777 [pid 6652] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6651] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(4, [pid 6651] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6651] creat("./bus", 000 [pid 4996] close(4 [pid 6652] <... pwritev2 resumed>) = 65007 [pid 4998] lstat("./137/file0", [pid 4996] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6652] exit_group(0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] rmdir("./137/file0" [pid 4995] <... openat resumed>) = 3 [pid 6652] <... exit_group resumed>) = ? [pid 6651] <... creat resumed>) = 4 [pid 4998] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6651] unlink("./bus" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 6650] +++ exited with 0 +++ [pid 4998] <... openat resumed>) = 4 [pid 4996] close(3 [pid 4995] <... close resumed>) = 0 [pid 4998] fstat(4, [pid 4996] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6650, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] rmdir("./137" [pid 6651] <... unlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 6651] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] mkdir("./138", 0777 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6659 [pid 4993] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4996] <... mkdir resumed>) = 0 [pid 6652] +++ exited with 0 +++ [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6659 attached [pid 4996] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6659] chdir("./135" [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] fstat(3, [pid 6659] <... chdir resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6659] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] close(3 [pid 4993] getdents64(3, [pid 6659] <... prctl resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6659] setpgid(0, 0 [pid 4998] close(4 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6652, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4993] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6659] <... setpgid resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6651] <... pwritev2 resumed>) = 65007 [pid 4998] rmdir("./137/file0" [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6660 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] lstat("./137/binderfs", [pid 6659] <... openat resumed>) = 3 [pid 6651] exit_group(0 [pid 4998] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6659] write(3, "1000", 4 [pid 6651] <... exit_group resumed>) = ? [pid 4998] getdents64(3, [pid 4993] unlink("./137/binderfs" [pid 6659] <... write resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 6660 attached [pid 6659] close(3 [pid 4998] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6660] chdir("./138" [pid 6659] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6660] <... chdir resumed>) = 0 [pid 6659] symlink("/dev/binderfs", "./binderfs" [pid 6660] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6659] <... symlink resumed>) = 0 [pid 4998] rmdir("./137" [pid 4994] <... openat resumed>) = 3 [pid 6660] <... prctl resumed>) = 0 [pid 6659] memfd_create("syzkaller", 0 [pid 6660] setpgid(0, 0 [pid 6659] <... memfd_create resumed>) = 3 [pid 6660] <... setpgid resumed>) = 0 [pid 6659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6659] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6660] <... openat resumed>) = 3 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] fstat(3, [pid 6660] write(3, "1000", 4 [pid 4998] mkdir("./138", 0777 [pid 6660] <... write resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6660] close(3 [pid 4998] <... mkdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] getdents64(3, [pid 6660] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6660] symlink("/dev/binderfs", "./binderfs" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6660] <... symlink resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6660] memfd_create("syzkaller", 0 [pid 4998] close(3 [pid 4994] lstat("./136/binderfs", [pid 6660] <... memfd_create resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 6660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6660] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] unlink("./136/binderfs" [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6661 [pid 6651] +++ exited with 0 +++ [pid 4994] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 6661 attached [pid 4994] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6661] chdir("./138" [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6651, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 6661] <... chdir resumed>) = 0 [pid 4997] <... restart_syscall resumed>) = 0 [pid 6661] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6661] <... prctl resumed>) = 0 [pid 6661] setpgid(0, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = 0 [pid 6661] <... setpgid resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... openat resumed>) = 3 [pid 6661] <... openat resumed>) = 3 [pid 4997] fstat(3, [pid 6661] write(3, "1000", 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6661] <... write resumed>) = 4 [pid 4997] getdents64(3, [pid 6661] close(3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6661] <... close resumed>) = 0 [pid 6661] symlink("/dev/binderfs", "./binderfs" [pid 4997] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6661] <... symlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6661] memfd_create("syzkaller", 0 [pid 4997] lstat("./137/binderfs", [pid 6661] <... memfd_create resumed>) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] unlink("./137/binderfs" [pid 6661] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./137/file0", [pid 4997] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] <... umount2 resumed>) = 0 [pid 4993] fstat(4, [pid 4997] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(4, [pid 4997] lstat("./137/file0", [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4997] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 4997] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4993] rmdir("./137/file0" [pid 6660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] fstat(4, [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4997] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] close(3 [pid 4994] <... umount2 resumed>) = 0 [pid 6661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./137" [pid 4997] close(4 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] mkdir("./138", 0777 [pid 4997] rmdir("./137/file0" [pid 4994] lstat("./136/file0", [pid 4993] <... mkdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] getdents64(3, [pid 4994] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] close(3 [pid 4994] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] close(3 [pid 4997] rmdir("./137" [pid 4994] fstat(4, [pid 4993] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] mkdir("./138", 0777 [pid 4994] getdents64(4, [pid 4997] <... mkdir resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6662 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] getdents64(4, [pid 4997] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] close(4 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... close resumed>) = 0 [pid 4997] close(3 [pid 4994] rmdir("./136/file0" [pid 4997] <... close resumed>) = 0 ./strace-static-x86_64: Process 6662 attached [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... rmdir resumed>) = 0 [pid 6662] chdir("./138" [pid 4994] getdents64(3, [pid 6662] <... chdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6663 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6662] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] close(3 [pid 6662] <... prctl resumed>) = 0 [pid 6662] setpgid(0, 0 [pid 6659] <... write resumed>) = 2097152 [pid 4994] <... close resumed>) = 0 ./strace-static-x86_64: Process 6663 attached [pid 6662] <... setpgid resumed>) = 0 [pid 4994] rmdir("./136" [pid 6663] chdir("./138" [pid 6662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6663] <... chdir resumed>) = 0 [pid 6662] <... openat resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 6663] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6662] write(3, "1000", 4 [pid 4994] mkdir("./137", 0777 [pid 6663] <... prctl resumed>) = 0 [pid 6662] <... write resumed>) = 4 [pid 6663] setpgid(0, 0 [pid 6662] close(3 [pid 4994] <... mkdir resumed>) = 0 [pid 6663] <... setpgid resumed>) = 0 [pid 6662] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6662] symlink("/dev/binderfs", "./binderfs" [pid 6659] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... openat resumed>) = 3 [pid 6663] <... openat resumed>) = 3 [pid 6662] <... symlink resumed>) = 0 [pid 6661] <... write resumed>) = 2097152 [pid 6660] <... write resumed>) = 2097152 [pid 6659] <... munmap resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6663] write(3, "1000", 4 [pid 6662] memfd_create("syzkaller", 0 [pid 6659] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6663] <... write resumed>) = 4 [pid 6662] <... memfd_create resumed>) = 3 [pid 6659] <... openat resumed>) = 4 [pid 6661] munmap(0x7f46b9f9b000, 2097152 [pid 4994] close(3 [pid 6663] close(3 [pid 6662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6659] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... close resumed>) = 0 [pid 6663] <... close resumed>) = 0 [pid 6662] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6661] <... munmap resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6663] symlink("/dev/binderfs", "./binderfs" [pid 6661] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6663] <... symlink resumed>) = 0 [pid 6661] <... openat resumed>) = 4 ./strace-static-x86_64: Process 6664 attached [pid 6663] memfd_create("syzkaller", 0 [pid 6661] ioctl(4, LOOP_SET_FD, 3 [pid 6660] munmap(0x7f46b9f9b000, 2097152 [pid 6659] <... ioctl resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6664 [pid 6664] chdir("./137" [pid 6663] <... memfd_create resumed>) = 3 [pid 6662] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6659] close(3 [pid 6664] <... chdir resumed>) = 0 [pid 6663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6659] <... close resumed>) = 0 [pid 6664] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6663] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6661] <... ioctl resumed>) = 0 [pid 6659] mkdir("./file0", 0777 [pid 6664] <... prctl resumed>) = 0 [pid 6661] close(3 [pid 6660] <... munmap resumed>) = 0 [pid 6659] <... mkdir resumed>) = 0 [pid 6664] setpgid(0, 0 [pid 6661] <... close resumed>) = 0 [pid 6659] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6664] <... setpgid resumed>) = 0 [pid 6661] mkdir("./file0", 0777 [ 156.195893][ T6659] loop2: detected capacity change from 0 to 4096 [ 156.233058][ T6661] loop5: detected capacity change from 0 to 4096 [pid 6660] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6662] <... write resumed>) = 2097152 [pid 6661] <... mkdir resumed>) = 0 [pid 6660] <... openat resumed>) = 4 [pid 6664] <... openat resumed>) = 3 [pid 6661] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6660] ioctl(4, LOOP_SET_FD, 3 [pid 6664] write(3, "1000", 4) = 4 [pid 6664] close(3) = 0 [pid 6664] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6664] memfd_create("syzkaller", 0) = 3 [pid 6664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6662] munmap(0x7f46b9f9b000, 2097152 [pid 6660] <... ioctl resumed>) = 0 [pid 6662] <... munmap resumed>) = 0 [pid 6660] close(3 [pid 6662] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6660] <... close resumed>) = 0 [pid 6662] <... openat resumed>) = 4 [ 156.261669][ T6659] NILFS (loop2): invalid segment: Checksum error in segment payload [ 156.272595][ T6660] loop3: detected capacity change from 0 to 4096 [ 156.283268][ T6659] NILFS (loop2): trying rollback from an earlier position [ 156.293663][ T6661] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6660] mkdir("./file0", 0777 [pid 6662] ioctl(4, LOOP_SET_FD, 3 [pid 6660] <... mkdir resumed>) = 0 [pid 6664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6660] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6662] <... ioctl resumed>) = 0 [pid 6663] <... write resumed>) = 2097152 [pid 6662] close(3) = 0 [pid 6662] mkdir("./file0", 0777 [pid 6663] munmap(0x7f46b9f9b000, 2097152 [pid 6662] <... mkdir resumed>) = 0 [ 156.306584][ T6662] loop0: detected capacity change from 0 to 4096 [ 156.320256][ T6660] NILFS (loop3): invalid segment: Checksum error in segment payload [ 156.326987][ T6661] NILFS (loop5): trying rollback from an earlier position [ 156.338317][ T6660] NILFS (loop3): trying rollback from an earlier position [ 156.347848][ T6659] NILFS (loop2): recovery complete [pid 6662] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6663] <... munmap resumed>) = 0 [pid 6663] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6663] ioctl(4, LOOP_SET_FD, 3 [pid 6664] <... write resumed>) = 2097152 [pid 6663] <... ioctl resumed>) = 0 [pid 6664] munmap(0x7f46b9f9b000, 2097152 [pid 6663] close(3 [pid 6659] <... mount resumed>) = 0 [pid 6663] <... close resumed>) = 0 [pid 6664] <... munmap resumed>) = 0 [pid 6663] mkdir("./file0", 0777 [pid 6659] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6664] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6663] <... mkdir resumed>) = 0 [pid 6659] <... openat resumed>) = 3 [pid 6664] <... openat resumed>) = 4 [pid 6664] ioctl(4, LOOP_SET_FD, 3 [pid 6663] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 156.356693][ T6662] NILFS (loop0): invalid segment: Checksum error in segment payload [ 156.369399][ T6663] loop4: detected capacity change from 0 to 4096 [ 156.378542][ T6665] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.381917][ T6661] NILFS (loop5): recovery complete [ 156.393311][ T6662] NILFS (loop0): trying rollback from an earlier position [pid 6659] chdir("./file0") = 0 [pid 6659] ioctl(4, LOOP_CLR_FD [pid 6664] <... ioctl resumed>) = 0 [pid 6659] <... ioctl resumed>) = 0 [pid 6664] close(3 [pid 6659] close(4 [pid 6664] <... close resumed>) = 0 [pid 6659] <... close resumed>) = 0 [pid 6664] mkdir("./file0", 0777 [pid 6659] creat("./bus", 000 [pid 6664] <... mkdir resumed>) = 0 [ 156.414752][ T6664] loop1: detected capacity change from 0 to 4096 [ 156.417069][ T6660] NILFS (loop3): recovery complete [ 156.435497][ T6662] NILFS (loop0): recovery complete [ 156.435676][ T6664] NILFS (loop1): invalid segment: Checksum error in segment payload [ 156.452609][ T6663] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6664] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6660] <... mount resumed>) = 0 [pid 6660] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6660] chdir("./file0") = 0 [pid 6660] ioctl(4, LOOP_CLR_FD) = 0 [pid 6660] close(4) = 0 [pid 6660] creat("./bus", 000 [pid 6662] <... mount resumed>) = 0 [pid 6662] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6662] chdir("./file0") = 0 [pid 6662] ioctl(4, LOOP_CLR_FD) = 0 [pid 6662] close(4) = 0 [pid 6662] creat("./bus", 000 [pid 6661] <... mount resumed>) = 0 [pid 6661] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6661] chdir("./file0") = 0 [pid 6661] ioctl(4, LOOP_CLR_FD) = 0 [pid 6661] close(4 [pid 6662] <... creat resumed>) = 4 [pid 6661] <... close resumed>) = 0 [pid 6660] <... creat resumed>) = 4 [pid 6659] <... creat resumed>) = 4 [pid 6662] unlink("./bus" [pid 6661] creat("./bus", 000 [ 156.460736][ T6664] NILFS (loop1): trying rollback from an earlier position [ 156.461888][ T6663] NILFS (loop4): trying rollback from an earlier position [ 156.475221][ T6668] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.485819][ T6667] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.496425][ T6666] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6660] unlink("./bus" [pid 6659] unlink("./bus" [pid 6662] <... unlink resumed>) = 0 [pid 6659] <... unlink resumed>) = 0 [pid 6660] <... unlink resumed>) = 0 [pid 6662] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6660] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6659] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6661] <... creat resumed>) = 4 [pid 6661] unlink("./bus") = 0 [pid 6661] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6662] <... pwritev2 resumed>) = 65007 [ 156.520419][ T6663] NILFS (loop4): recovery complete [ 156.528198][ T6664] NILFS (loop1): recovery complete [pid 6662] exit_group(0 [pid 6664] <... mount resumed>) = 0 [pid 6662] <... exit_group resumed>) = ? [pid 6664] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6662] +++ exited with 0 +++ [pid 6660] <... pwritev2 resumed>) = 65007 [pid 6659] <... pwritev2 resumed>) = 65007 [pid 6664] chdir("./file0" [pid 6660] exit_group(0 [pid 6659] exit_group(0 [pid 6664] <... chdir resumed>) = 0 [pid 6660] <... exit_group resumed>) = ? [pid 6659] <... exit_group resumed>) = ? [pid 6664] ioctl(4, LOOP_CLR_FD [pid 6663] <... mount resumed>) = 0 [pid 6661] <... pwritev2 resumed>) = 65007 [pid 6664] <... ioctl resumed>) = 0 [pid 6663] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6661] exit_group(0 [pid 6664] close(4 [pid 6663] <... openat resumed>) = 3 [pid 6661] <... exit_group resumed>) = ? [pid 6664] <... close resumed>) = 0 [pid 6663] chdir("./file0" [pid 6659] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6662, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 6664] creat("./bus", 000 [pid 6663] <... chdir resumed>) = 0 [pid 6663] ioctl(4, LOOP_CLR_FD [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6659, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=9 /* 0.09 s */} --- [pid 6663] <... ioctl resumed>) = 0 [pid 6661] +++ exited with 0 +++ [pid 6660] +++ exited with 0 +++ [pid 4995] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6663] close(4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6661, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6660, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6664] <... creat resumed>) = 4 [pid 6663] <... close resumed>) = 0 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6664] unlink("./bus" [pid 6663] creat("./bus", 000 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6664] <... unlink resumed>) = 0 [pid 4995] fstat(3, [pid 4993] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6664] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6663] <... creat resumed>) = 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 6663] unlink("./bus" [pid 4998] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(3, [pid 4993] fstat(3, [pid 6663] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6663] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./138/binderfs") = 0 [pid 4993] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4996] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 4995] lstat("./135/binderfs", [pid 4998] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] unlink("./135/binderfs" [pid 4996] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... unlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./138/binderfs", [pid 4996] lstat("./138/binderfs", [pid 4995] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./138/binderfs" [pid 4996] unlink("./138/binderfs" [pid 4998] <... unlink resumed>) = 0 [ 156.579084][ T6669] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 156.604489][ T6670] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] <... unlink resumed>) = 0 [pid 4998] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./138/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./138/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./138") = 0 [pid 4993] mkdir("./139", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6663] <... pwritev2 resumed>) = 65007 [pid 6663] exit_group(0) = ? [pid 6664] <... pwritev2 resumed>) = 65007 [pid 6664] exit_group(0 [pid 4993] <... openat resumed>) = 3 [pid 6664] <... exit_group resumed>) = ? [pid 6663] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6663, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4997] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./138/binderfs") = 0 [pid 4997] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./138/file0", [pid 4996] lstat("./138/file0", [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./138/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 4 [pid 4997] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] fstat(4, [pid 4998] getdents64(4, [pid 4997] <... openat resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] fstat(4, [pid 4996] getdents64(4, [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6671 ./strace-static-x86_64: Process 6671 attached [pid 6671] chdir("./139") = 0 [pid 6671] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 4998] close(4 [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./138/file0" [pid 4996] close(4 [pid 4997] close(4 [pid 6671] <... prctl resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4997] rmdir("./138/file0" [pid 4996] rmdir("./138/file0" [pid 6671] setpgid(0, 0) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 6671] <... openat resumed>) = 3 [pid 4997] close(3 [pid 4996] getdents64(3, [pid 6671] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6671] <... write resumed>) = 4 [pid 4998] rmdir("./138" [pid 4997] rmdir("./138" [pid 4996] close(3 [pid 6671] close(3 [pid 6664] +++ exited with 0 +++ [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 6671] <... close resumed>) = 0 [pid 4998] mkdir("./139", 0777 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] rmdir("./138" [pid 6671] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] mkdir("./139", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6664, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6671] memfd_create("syzkaller", 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6671] <... memfd_create resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] mkdir("./139", 0777 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6671] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... mkdir resumed>) = 0 [pid 4995] lstat("./135/file0", [pid 4994] <... restart_syscall resumed>) = 0 [pid 4998] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 3 [pid 4995] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] close(3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... openat resumed>) = 4 [pid 4997] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] close(3 [pid 4995] fstat(4, [pid 4994] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... close resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6672 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6673 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 4995] getdents64(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6674 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(3, [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] close(4 [pid 4994] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6674 attached [pid 4995] rmdir("./135/file0" [pid 4994] lstat("./137/binderfs", [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] getdents64(3, [pid 4994] unlink("./137/binderfs" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 4994] <... unlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6674] chdir("./139" [pid 4995] rmdir("./135" [pid 6674] <... chdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./136", 0777./strace-static-x86_64: Process 6672 attached [pid 6672] chdir("./139" [pid 4995] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 6673 attached [pid 6674] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6672] <... chdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6674] <... prctl resumed>) = 0 [pid 6673] chdir("./139" [pid 6672] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6673] <... chdir resumed>) = 0 [pid 6672] <... prctl resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6674] setpgid(0, 0 [pid 6673] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6672] setpgid(0, 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6673] <... prctl resumed>) = 0 [pid 6674] <... setpgid resumed>) = 0 [pid 6672] <... setpgid resumed>) = 0 [pid 4995] close(3 [pid 6674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6673] setpgid(0, 0 [pid 6672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... close resumed>) = 0 [pid 6674] <... openat resumed>) = 3 [pid 6673] <... setpgid resumed>) = 0 [pid 6672] <... openat resumed>) = 3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6674] write(3, "1000", 4 [pid 6673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6672] write(3, "1000", 4 [pid 6674] <... write resumed>) = 4 [pid 6673] <... openat resumed>) = 3 [pid 6672] <... write resumed>) = 4 [pid 6674] close(3 [pid 6673] write(3, "1000", 4 [pid 6672] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6675 [pid 6674] <... close resumed>) = 0 [pid 6673] <... write resumed>) = 4 [pid 6672] <... close resumed>) = 0 [pid 6674] symlink("/dev/binderfs", "./binderfs" [pid 6673] close(3 [pid 6672] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 6675 attached [pid 6674] <... symlink resumed>) = 0 [pid 6673] <... close resumed>) = 0 [pid 6672] <... symlink resumed>) = 0 [pid 6675] chdir("./136" [pid 6674] memfd_create("syzkaller", 0 [pid 6673] symlink("/dev/binderfs", "./binderfs" [pid 6672] memfd_create("syzkaller", 0 [pid 6675] <... chdir resumed>) = 0 [pid 6674] <... memfd_create resumed>) = 3 [pid 6673] <... symlink resumed>) = 0 [pid 6672] <... memfd_create resumed>) = 3 [pid 4994] <... umount2 resumed>) = 0 [pid 6675] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6673] memfd_create("syzkaller", 0 [pid 6672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6675] <... prctl resumed>) = 0 [pid 6674] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6673] <... memfd_create resumed>) = 3 [pid 6672] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6675] setpgid(0, 0 [pid 6673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6675] <... setpgid resumed>) = 0 [pid 6673] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6675] write(3, "1000", 4 [pid 4994] lstat("./137/file0", [pid 6675] <... write resumed>) = 4 [pid 6675] close(3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6675] <... close resumed>) = 0 [pid 4994] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6675] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6675] memfd_create("syzkaller", 0 [pid 4994] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6675] <... memfd_create resumed>) = 3 [pid 6675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6671] <... write resumed>) = 2097152 [pid 4994] <... openat resumed>) = 4 [pid 6675] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./137/file0" [pid 6671] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, [pid 6671] <... munmap resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./137" [pid 6671] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... rmdir resumed>) = 0 [pid 6672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6671] <... openat resumed>) = 4 [pid 4994] mkdir("./138", 0777 [pid 6675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6674] <... write resumed>) = 2097152 [pid 6671] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6671] <... ioctl resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6674] munmap(0x7f46b9f9b000, 2097152 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6671] close(3 [pid 4994] close(3 [pid 6671] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6674] <... munmap resumed>) = 0 [pid 6673] <... write resumed>) = 2097152 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6673] munmap(0x7f46b9f9b000, 2097152 [pid 6671] mkdir("./file0", 0777 [pid 6674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6673] <... munmap resumed>) = 0 [pid 6671] <... mkdir resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6676 [pid 6674] <... openat resumed>) = 4 [pid 6673] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6671] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6673] <... openat resumed>) = 4 [pid 6673] ioctl(4, LOOP_SET_FD, 3 [pid 6674] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 6676 attached [pid 6675] <... write resumed>) = 2097152 [pid 6674] <... ioctl resumed>) = 0 [pid 6673] <... ioctl resumed>) = 0 [pid 6672] <... write resumed>) = 2097152 [ 156.946183][ T6671] loop0: detected capacity change from 0 to 4096 [ 156.973490][ T6673] loop4: detected capacity change from 0 to 4096 [ 156.980698][ T6674] loop3: detected capacity change from 0 to 4096 [ 156.988379][ T6671] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6676] chdir("./138" [pid 6675] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6675] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6675] ioctl(4, LOOP_SET_FD, 3 [pid 6676] <... chdir resumed>) = 0 [pid 6674] close(3 [pid 6673] close(3 [pid 6672] munmap(0x7f46b9f9b000, 2097152 [pid 6676] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6674] <... close resumed>) = 0 [pid 6673] <... close resumed>) = 0 [pid 6675] <... ioctl resumed>) = 0 [pid 6675] close(3 [pid 6672] <... munmap resumed>) = 0 [pid 6676] <... prctl resumed>) = 0 [pid 6673] mkdir("./file0", 0777 [pid 6676] setpgid(0, 0 [pid 6674] mkdir("./file0", 0777 [pid 6672] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6675] <... close resumed>) = 0 [pid 6675] mkdir("./file0", 0777 [pid 6676] <... setpgid resumed>) = 0 [pid 6673] <... mkdir resumed>) = 0 [pid 6672] <... openat resumed>) = 4 [pid 6676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6672] ioctl(4, LOOP_SET_FD, 3 [pid 6673] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6676] <... openat resumed>) = 3 [pid 6675] <... mkdir resumed>) = 0 [pid 6675] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6676] write(3, "1000", 4) = 4 [pid 6676] close(3) = 0 [pid 6676] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6676] memfd_create("syzkaller", 0 [pid 6674] <... mkdir resumed>) = 0 [pid 6672] <... ioctl resumed>) = 0 [pid 6676] <... memfd_create resumed>) = 3 [pid 6676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6674] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6676] <... mmap resumed>) = 0x7f46b9f9b000 [ 156.996664][ T6671] NILFS (loop0): trying rollback from an earlier position [ 157.001012][ T6675] loop2: detected capacity change from 0 to 4096 [ 157.015396][ T6672] loop5: detected capacity change from 0 to 4096 [pid 6672] close(3 [pid 6676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6672] <... close resumed>) = 0 [pid 6672] mkdir("./file0", 0777) = 0 [ 157.042726][ T6673] NILFS (loop4): invalid segment: Checksum error in segment payload [ 157.043718][ T6674] NILFS (loop3): invalid segment: Checksum error in segment payload [ 157.054342][ T6675] NILFS (loop2): invalid segment: Checksum error in segment payload [ 157.067073][ T6673] NILFS (loop4): trying rollback from an earlier position [ 157.067916][ T6675] NILFS (loop2): trying rollback from an earlier position [ 157.083938][ T6671] NILFS (loop0): recovery complete [pid 6672] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6676] <... write resumed>) = 2097152 [pid 6676] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6671] <... mount resumed>) = 0 [ 157.084581][ T6674] NILFS (loop3): trying rollback from an earlier position [ 157.101835][ T6672] NILFS (loop5): invalid segment: Checksum error in segment payload [ 157.111031][ T6677] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.115370][ T6672] NILFS (loop5): trying rollback from an earlier position [ 157.122773][ T6675] NILFS (loop2): recovery complete [pid 6676] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6671] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6676] ioctl(4, LOOP_SET_FD, 3 [pid 6671] <... openat resumed>) = 3 [pid 6676] <... ioctl resumed>) = 0 [pid 6676] close(3) = 0 [pid 6676] mkdir("./file0", 0777) = 0 [pid 6676] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6671] chdir("./file0") = 0 [pid 6671] ioctl(4, LOOP_CLR_FD) = 0 [pid 6671] close(4 [pid 6672] <... mount resumed>) = 0 [pid 6671] <... close resumed>) = 0 [ 157.138943][ T6673] NILFS (loop4): recovery complete [ 157.141331][ T6674] NILFS (loop3): recovery complete [ 157.145951][ T6676] loop1: detected capacity change from 0 to 4096 [ 157.149801][ T6672] NILFS (loop5): recovery complete [ 157.166192][ T6680] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.176890][ T6679] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6672] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6671] creat("./bus", 000 [pid 6672] <... openat resumed>) = 3 [pid 6672] chdir("./file0") = 0 [pid 6672] ioctl(4, LOOP_CLR_FD [pid 6675] <... mount resumed>) = 0 [pid 6672] <... ioctl resumed>) = 0 [pid 6675] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6673] <... mount resumed>) = 0 [pid 6672] close(4 [pid 6675] <... openat resumed>) = 3 [pid 6673] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6672] <... close resumed>) = 0 [pid 6671] <... creat resumed>) = 4 [pid 6675] chdir("./file0" [pid 6673] <... openat resumed>) = 3 [pid 6675] <... chdir resumed>) = 0 [pid 6673] chdir("./file0" [pid 6675] ioctl(4, LOOP_CLR_FD [pid 6673] <... chdir resumed>) = 0 [pid 6672] creat("./bus", 000 [pid 6675] <... ioctl resumed>) = 0 [pid 6673] ioctl(4, LOOP_CLR_FD [pid 6671] unlink("./bus" [pid 6675] close(4 [pid 6673] <... ioctl resumed>) = 0 [pid 6675] <... close resumed>) = 0 [pid 6673] close(4 [pid 6675] creat("./bus", 000 [pid 6673] <... close resumed>) = 0 [ 157.177501][ T6678] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6673] creat("./bus", 000 [pid 6672] <... creat resumed>) = 4 [pid 6671] <... unlink resumed>) = 0 [pid 6672] unlink("./bus" [pid 6671] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6674] <... mount resumed>) = 0 [pid 6674] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6674] chdir("./file0") = 0 [pid 6674] ioctl(4, LOOP_CLR_FD) = 0 [pid 6674] close(4) = 0 [pid 6674] creat("./bus", 000 [pid 6672] <... unlink resumed>) = 0 [pid 6672] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6675] <... creat resumed>) = 4 [pid 6675] unlink("./bus") = 0 [pid 6675] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6671] <... pwritev2 resumed>) = 65007 [pid 6671] exit_group(0) = ? [pid 6672] <... pwritev2 resumed>) = 65007 [pid 6675] <... pwritev2 resumed>) = 65007 [pid 6672] exit_group(0 [pid 6675] exit_group(0 [pid 6672] <... exit_group resumed>) = ? [pid 6675] <... exit_group resumed>) = ? [ 157.215427][ T6676] NILFS (loop1): invalid segment: Checksum error in segment payload [ 157.224489][ T6676] NILFS (loop1): trying rollback from an earlier position [ 157.231915][ T6681] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6675] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6675, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./136/binderfs") = 0 [pid 4995] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6674] <... creat resumed>) = 4 [ 157.286432][ T6676] NILFS (loop1): recovery complete [pid 6674] unlink("./bus" [pid 6676] <... mount resumed>) = 0 [pid 6676] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6676] chdir("./file0") = 0 [pid 6676] ioctl(4, LOOP_CLR_FD) = 0 [pid 6676] close(4) = 0 [pid 6676] creat("./bus", 000 [pid 6673] <... creat resumed>) = 4 [pid 6673] unlink("./bus") = 0 [pid 6673] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6674] <... unlink resumed>) = 0 [pid 6672] +++ exited with 0 +++ [pid 6671] +++ exited with 0 +++ [pid 6674] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6671, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6672, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6674] <... pwritev2 resumed>) = 65007 [pid 4998] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6674] exit_group(0 [pid 4998] fstat(3, [pid 4993] lstat("./139/binderfs", [pid 6676] <... creat resumed>) = 4 [pid 6674] <... exit_group resumed>) = ? [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6676] unlink("./bus" [pid 4998] getdents64(3, [pid 4993] unlink("./139/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... unlink resumed>) = 0 [pid 6676] <... unlink resumed>) = 0 [pid 6673] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 157.307614][ T6682] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6676] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6673] exit_group(0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6673] <... exit_group resumed>) = ? [pid 4998] lstat("./139/binderfs", [pid 4995] <... umount2 resumed>) = 0 [pid 4995] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./136/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./136/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 6676] <... pwritev2 resumed>) = 65007 [pid 6674] +++ exited with 0 +++ [pid 6673] +++ exited with 0 +++ [pid 4998] unlink("./139/binderfs" [pid 4995] <... close resumed>) = 0 [pid 6676] exit_group(0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6673, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6674, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 4995] rmdir("./136" [pid 6676] <... exit_group resumed>) = ? [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] <... rmdir resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4998] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] mkdir("./137", 0777 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4997] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4997] fstat(3, [pid 4996] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4997] getdents64(3, [pid 4996] fstat(3, [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] close(3 [pid 4997] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6676] +++ exited with 0 +++ [pid 4997] lstat("./139/binderfs", [pid 4996] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6683 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6676, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] unlink("./139/binderfs" [pid 4996] lstat("./139/binderfs", [pid 4997] <... unlink resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] unlink("./139/binderfs" [pid 4994] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6683 attached [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6683] chdir("./137" [pid 4994] lstat("./138/binderfs", [pid 6683] <... chdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6683] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] unlink("./138/binderfs" [pid 6683] <... prctl resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4993] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6683] setpgid(0, 0 [pid 4994] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6683] <... setpgid resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] lstat("./139/file0", [pid 6683] write(3, "1000", 4) = 4 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6683] close(3 [pid 4993] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6683] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6683] symlink("/dev/binderfs", "./binderfs" [pid 4993] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6683] <... symlink resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 6683] memfd_create("syzkaller", 0) = 3 [pid 4993] fstat(4, [pid 6683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] getdents64(4, [pid 4997] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(4, [pid 4997] lstat("./139/file0", [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(4 [pid 4997] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] rmdir("./139/file0" [pid 4997] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4993] getdents64(3, [pid 4997] fstat(4, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 4998] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./139" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(4, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] mkdir("./140", 0777 [pid 4998] lstat("./139/file0", [pid 4997] close(4 [pid 4994] lstat("./138/file0", [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] rmdir("./139/file0" [pid 4993] <... openat resumed>) = 3 [pid 4998] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(3, [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 4998] <... openat resumed>) = 4 [pid 4997] close(3 [pid 4993] <... close resumed>) = 0 [pid 4998] fstat(4, [pid 4997] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] rmdir("./139" [pid 4994] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4997] <... rmdir resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6684 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] mkdir("./140", 0777 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4997] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] close(4 [pid 4997] <... openat resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4998] rmdir("./139/file0" [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4996] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... rmdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] fstat(4, [pid 4998] getdents64(3, [pid 4996] lstat("./139/file0", [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6685 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6684 attached [pid 4998] close(3 [pid 4996] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 6684] chdir("./140" [pid 4998] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6684] <... chdir resumed>) = 0 [pid 4998] rmdir("./139" [pid 4996] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6684] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] getdents64(4, [pid 6684] <... prctl resumed>) = 0 [pid 4998] mkdir("./140", 0777 [pid 4996] fstat(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 6685 attached [pid 6684] setpgid(0, 0 [pid 6683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(4 [pid 6684] <... setpgid resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] getdents64(4, [pid 6685] chdir("./140" [pid 6684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... close resumed>) = 0 [pid 6684] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6685] <... chdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4994] rmdir("./138/file0" [pid 6685] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6684] write(3, "1000", 4 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6685] <... prctl resumed>) = 0 [pid 6684] <... write resumed>) = 4 [pid 4998] close(3 [pid 4996] close(4 [pid 4994] <... rmdir resumed>) = 0 [pid 6685] setpgid(0, 0 [pid 6684] close(3 [pid 4998] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 6685] <... setpgid resumed>) = 0 [pid 6684] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] rmdir("./139/file0" [pid 6685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6684] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6684] <... symlink resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6686 [pid 4996] getdents64(3, [pid 4994] close(3 [pid 6685] <... openat resumed>) = 3 [pid 6684] memfd_create("syzkaller", 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6685] write(3, "1000", 4 [pid 6684] <... memfd_create resumed>) = 3 [pid 4996] close(3 [pid 4994] <... close resumed>) = 0 [pid 6685] <... write resumed>) = 4 [pid 6684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... close resumed>) = 0 [pid 4994] rmdir("./138"./strace-static-x86_64: Process 6686 attached [pid 6685] close(3 [pid 6684] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] rmdir("./139" [pid 6686] chdir("./140" [pid 6685] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6686] <... chdir resumed>) = 0 [pid 4996] mkdir("./140", 0777 [pid 6686] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6685] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... mkdir resumed>) = 0 [pid 4994] mkdir("./139", 0777 [pid 6686] <... prctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6686] setpgid(0, 0 [pid 4996] <... openat resumed>) = 3 [pid 6686] <... setpgid resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6686] <... openat resumed>) = 3 [pid 6685] <... symlink resumed>) = 0 [pid 4996] close(3 [pid 6686] write(3, "1000", 4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6685] memfd_create("syzkaller", 0 [pid 6686] <... write resumed>) = 4 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6686] close(3 [pid 6685] <... memfd_create resumed>) = 3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6686] <... close resumed>) = 0 [pid 6685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6687 [pid 6686] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... openat resumed>) = 3 [pid 6686] <... symlink resumed>) = 0 [pid 6685] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6686] memfd_create("syzkaller", 0) = 3 [pid 6686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6683] <... write resumed>) = 2097152 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6688 ./strace-static-x86_64: Process 6687 attached [pid 6684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 6688 attached [pid 6688] chdir("./139" [pid 6687] chdir("./140") = 0 [pid 6688] <... chdir resumed>) = 0 [pid 6687] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6688] setpgid(0, 0) = 0 [pid 6687] <... prctl resumed>) = 0 [pid 6688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6687] setpgid(0, 0 [pid 6688] <... openat resumed>) = 3 [pid 6687] <... setpgid resumed>) = 0 [pid 6685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6688] write(3, "1000", 4) = 4 [pid 6688] close(3) = 0 [pid 6688] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6688] memfd_create("syzkaller", 0 [pid 6687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6688] <... memfd_create resumed>) = 3 [pid 6683] munmap(0x7f46b9f9b000, 2097152 [pid 6688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6687] <... openat resumed>) = 3 [pid 6683] <... munmap resumed>) = 0 [pid 6688] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6687] write(3, "1000", 4) = 4 [pid 6687] close(3 [pid 6683] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6687] <... close resumed>) = 0 [pid 6683] <... openat resumed>) = 4 [pid 6687] symlink("/dev/binderfs", "./binderfs" [pid 6683] ioctl(4, LOOP_SET_FD, 3 [pid 6687] <... symlink resumed>) = 0 [pid 6686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6685] <... write resumed>) = 2097152 [pid 6683] <... ioctl resumed>) = 0 [pid 6687] memfd_create("syzkaller", 0 [pid 6683] close(3) = 0 [pid 6683] mkdir("./file0", 0777) = 0 [pid 6683] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6685] munmap(0x7f46b9f9b000, 2097152 [pid 6687] <... memfd_create resumed>) = 3 [pid 6687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6685] <... munmap resumed>) = 0 [pid 6687] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6685] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6684] <... write resumed>) = 2097152 [pid 6684] munmap(0x7f46b9f9b000, 2097152 [pid 6685] <... openat resumed>) = 4 [pid 6684] <... munmap resumed>) = 0 [pid 6685] ioctl(4, LOOP_SET_FD, 3 [pid 6684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6684] ioctl(4, LOOP_SET_FD, 3 [pid 6686] <... write resumed>) = 2097152 [pid 6685] <... ioctl resumed>) = 0 [pid 6685] close(3) = 0 [pid 6685] mkdir("./file0", 0777) = 0 [ 157.655819][ T6683] loop2: detected capacity change from 0 to 4096 [ 157.680678][ T6685] loop4: detected capacity change from 0 to 4096 [ 157.681970][ T6684] loop0: detected capacity change from 0 to 4096 [ 157.696883][ T6683] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6686] munmap(0x7f46b9f9b000, 2097152 [pid 6685] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6684] <... ioctl resumed>) = 0 [pid 6686] <... munmap resumed>) = 0 [pid 6684] close(3) = 0 [pid 6684] mkdir("./file0", 0777) = 0 [pid 6684] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6686] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [ 157.710786][ T6683] NILFS (loop2): trying rollback from an earlier position [ 157.738901][ T6686] loop5: detected capacity change from 0 to 4096 [ 157.745522][ T6685] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6686] ioctl(4, LOOP_SET_FD, 3 [pid 6688] <... write resumed>) = 2097152 [pid 6688] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6688] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6688] ioctl(4, LOOP_SET_FD, 3 [pid 6686] <... ioctl resumed>) = 0 [pid 6686] close(3) = 0 [pid 6686] mkdir("./file0", 0777) = 0 [pid 6686] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6688] <... ioctl resumed>) = 0 [pid 6688] close(3) = 0 [pid 6688] mkdir("./file0", 0777) = 0 [pid 6688] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6687] <... write resumed>) = 2097152 [ 157.753858][ T6684] NILFS (loop0): invalid segment: Checksum error in segment payload [ 157.760658][ T6688] loop1: detected capacity change from 0 to 4096 [ 157.768702][ T6685] NILFS (loop4): trying rollback from an earlier position [ 157.781583][ T6684] NILFS (loop0): trying rollback from an earlier position [ 157.794968][ T6686] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6687] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6687] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 157.808316][ T6686] NILFS (loop5): trying rollback from an earlier position [ 157.817219][ T6685] NILFS (loop4): recovery complete [ 157.817891][ T6683] NILFS (loop2): recovery complete [ 157.832541][ T6684] NILFS (loop0): recovery complete [ 157.834974][ T6687] loop3: detected capacity change from 0 to 4096 [ 157.839182][ T6689] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6687] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6687] close(3) = 0 [pid 6687] mkdir("./file0", 0777) = 0 [pid 6687] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6685] <... mount resumed>) = 0 [pid 6684] <... mount resumed>) = 0 [pid 6685] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6684] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6685] <... openat resumed>) = 3 [pid 6684] <... openat resumed>) = 3 [pid 6685] chdir("./file0" [pid 6684] chdir("./file0" [pid 6685] <... chdir resumed>) = 0 [pid 6684] <... chdir resumed>) = 0 [pid 6685] ioctl(4, LOOP_CLR_FD [pid 6684] ioctl(4, LOOP_CLR_FD [pid 6685] <... ioctl resumed>) = 0 [pid 6684] <... ioctl resumed>) = 0 [pid 6685] close(4 [pid 6684] close(4 [pid 6685] <... close resumed>) = 0 [pid 6684] <... close resumed>) = 0 [pid 6683] <... mount resumed>) = 0 [pid 6685] creat("./bus", 000 [ 157.849404][ T6688] NILFS (loop1): invalid segment: Checksum error in segment payload [ 157.856452][ T6690] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.876000][ T6686] NILFS (loop5): recovery complete [ 157.880580][ T6688] NILFS (loop1): trying rollback from an earlier position [ 157.892374][ T6687] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6684] creat("./bus", 000 [pid 6686] <... mount resumed>) = 0 [pid 6685] <... creat resumed>) = 4 [pid 6684] <... creat resumed>) = 4 [pid 6683] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6686] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6685] unlink("./bus" [pid 6684] unlink("./bus" [pid 6686] <... openat resumed>) = 3 [pid 6685] <... unlink resumed>) = 0 [pid 6684] <... unlink resumed>) = 0 [pid 6683] <... openat resumed>) = 3 [ 157.901731][ T6692] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.912608][ T6691] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.918957][ T6687] NILFS (loop3): trying rollback from an earlier position [ 157.940072][ T6688] NILFS (loop1): recovery complete [ 157.946044][ T6687] NILFS (loop3): recovery complete [pid 6685] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6684] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6686] chdir("./file0" [pid 6683] chdir("./file0" [pid 6686] <... chdir resumed>) = 0 [pid 6683] <... chdir resumed>) = 0 [pid 6684] <... pwritev2 resumed>) = 65007 [pid 6684] exit_group(0 [pid 6685] <... pwritev2 resumed>) = 65007 [pid 6686] ioctl(4, LOOP_CLR_FD [pid 6683] ioctl(4, LOOP_CLR_FD [pid 6688] <... mount resumed>) = 0 [pid 6687] <... mount resumed>) = 0 [pid 6686] <... ioctl resumed>) = 0 [pid 6685] exit_group(0 [pid 6684] <... exit_group resumed>) = ? [pid 6683] <... ioctl resumed>) = 0 [pid 6688] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6687] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6686] close(4 [pid 6685] <... exit_group resumed>) = ? [pid 6683] close(4 [pid 6688] <... openat resumed>) = 3 [pid 6687] <... openat resumed>) = 3 [pid 6686] <... close resumed>) = 0 [pid 6683] <... close resumed>) = 0 [pid 6688] chdir("./file0" [pid 6687] chdir("./file0" [pid 6686] creat("./bus", 000 [pid 6683] creat("./bus", 000 [pid 6688] <... chdir resumed>) = 0 [pid 6687] <... chdir resumed>) = 0 [pid 6683] <... creat resumed>) = 4 [pid 6688] ioctl(4, LOOP_CLR_FD [pid 6687] ioctl(4, LOOP_CLR_FD [pid 6686] <... creat resumed>) = 4 [pid 6683] unlink("./bus" [pid 6688] <... ioctl resumed>) = 0 [pid 6686] unlink("./bus" [pid 6688] close(4 [pid 6687] <... ioctl resumed>) = 0 [pid 6688] <... close resumed>) = 0 [pid 6687] close(4 [pid 6683] <... unlink resumed>) = 0 [pid 6686] <... unlink resumed>) = 0 [ 157.956644][ T6693] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 157.968653][ T6694] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6688] creat("./bus", 000 [pid 6687] <... close resumed>) = 0 [pid 6686] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6683] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6688] <... creat resumed>) = 4 [pid 6687] creat("./bus", 000 [pid 6688] unlink("./bus" [pid 6684] +++ exited with 0 +++ [pid 6685] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6685, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6684, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 6688] <... unlink resumed>) = 0 [pid 6688] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6687] <... creat resumed>) = 4 [pid 6687] unlink("./bus" [pid 6686] <... pwritev2 resumed>) = 65007 [pid 6683] <... pwritev2 resumed>) = 65007 [pid 6686] exit_group(0 [pid 4997] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6687] <... unlink resumed>) = 0 [pid 6686] <... exit_group resumed>) = ? [pid 6683] exit_group(0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6687] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6683] <... exit_group resumed>) = ? [pid 4997] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 6686] +++ exited with 0 +++ [pid 4997] fstat(3, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6686, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4997] getdents64(3, [pid 4998] <... restart_syscall resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] lstat("./140/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 3 [pid 4993] lstat("./140/binderfs", [pid 4998] fstat(3, [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] unlink("./140/binderfs" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(3, [pid 4997] <... unlink resumed>) = 0 [pid 4993] unlink("./140/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4998] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./140/binderfs") = 0 [pid 6688] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6688] exit_group(0) = ? [pid 6687] <... pwritev2 resumed>) = 65007 [pid 6683] +++ exited with 0 +++ [pid 6687] exit_group(0) = ? [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6683, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./137/binderfs") = 0 [pid 4995] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6688] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6688, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6687] +++ exited with 0 +++ [pid 4994] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6687, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./139/binderfs" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... unlink resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4994] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] fstat(3, [pid 4997] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./140/binderfs" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 4997] lstat("./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] lstat("./140/file0", [pid 4997] fstat(4, [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, [pid 4993] <... openat resumed>) = 4 [pid 4998] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] fstat(4, [pid 4997] close(4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 4997] rmdir("./140/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] getdents64(4, [pid 4997] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4997] close(3 [pid 4993] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] rmdir("./140/file0" [pid 4997] rmdir("./140" [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] mkdir("./141", 0777 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4993] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4993] rmdir("./140" [pid 4998] lstat("./140/file0", [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] mkdir("./141", 0777 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] close(3 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... openat resumed>) = 3 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6695 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6695 attached [pid 6695] chdir("./141" [pid 4998] <... openat resumed>) = 4 [pid 6695] <... chdir resumed>) = 0 [pid 4998] fstat(4, [pid 6695] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6695] <... prctl resumed>) = 0 [pid 4998] getdents64(4, [pid 6695] setpgid(0, 0) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] getdents64(4, [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6696 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6695] <... openat resumed>) = 3 [pid 4998] close(4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6695] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 6695] <... write resumed>) = 4 [pid 4998] rmdir("./140/file0" [pid 6695] close(3) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] lstat("./137/file0", [pid 4994] <... umount2 resumed>) = 0 [pid 6695] symlink("/dev/binderfs", "./binderfs" [pid 4998] getdents64(3, [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6696 attached [pid 6695] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6696] chdir("./141" [pid 6695] memfd_create("syzkaller", 0 [pid 4998] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6696] <... chdir resumed>) = 0 [pid 6695] <... memfd_create resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6696] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] rmdir("./140" [pid 4995] <... openat resumed>) = 4 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] fstat(4, [pid 6696] <... prctl resumed>) = 0 [pid 6695] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] mkdir("./141", 0777 [pid 4996] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(4, [pid 4994] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./140/file0", [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4996] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] lstat("./139/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(4 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6696] setpgid(0, 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 4994] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6696] <... setpgid resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... openat resumed>) = 4 [pid 4995] rmdir("./137/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... openat resumed>) = 3 [pid 4996] fstat(4, [pid 4995] <... rmdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6696] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4994] <... openat resumed>) = 4 [pid 6696] write(3, "1000", 4 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] fstat(4, [pid 6696] <... write resumed>) = 4 [pid 4998] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6696] close(3 [pid 4998] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 6696] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./137" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6696] symlink("/dev/binderfs", "./binderfs" [pid 4996] close(4 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4995] mkdir("./138", 0777 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./140/file0" [pid 4995] <... mkdir resumed>) = 0 [pid 4994] close(4 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] <... openat resumed>) = 3 [pid 4994] rmdir("./139/file0" [pid 6696] <... symlink resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6697 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... rmdir resumed>) = 0 [pid 6696] memfd_create("syzkaller", 0 [pid 4996] close(3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] getdents64(3, [pid 6696] <... memfd_create resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 4995] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] rmdir("./140" [pid 4995] <... close resumed>) = 0 [pid 4994] close(3 [pid 6696] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4996] mkdir("./141", 0777 [pid 4994] rmdir("./139" [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6698 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] mkdir("./140", 0777 [pid 4996] <... openat resumed>) = 3 [pid 4994] <... mkdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... openat resumed>) = 3 [pid 4996] close(3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] <... close resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 6698 attached [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] close(3 [pid 6698] chdir("./138" [pid 4994] <... close resumed>) = 0 [pid 6698] <... chdir resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6699 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6700 [pid 6698] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 6697 attached [pid 6698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 6699 attached [pid 6698] write(3, "1000", 4 [pid 6697] chdir("./141"./strace-static-x86_64: Process 6700 attached [pid 6699] chdir("./141" [pid 6698] <... write resumed>) = 4 [pid 6697] <... chdir resumed>) = 0 [pid 6695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6700] chdir("./140" [pid 6699] <... chdir resumed>) = 0 [pid 6698] close(3 [pid 6697] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6700] <... chdir resumed>) = 0 [pid 6699] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6698] <... close resumed>) = 0 [pid 6697] <... prctl resumed>) = 0 [pid 6700] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6699] <... prctl resumed>) = 0 [pid 6698] symlink("/dev/binderfs", "./binderfs" [pid 6697] setpgid(0, 0 [pid 6700] <... prctl resumed>) = 0 [pid 6699] setpgid(0, 0 [pid 6698] <... symlink resumed>) = 0 [pid 6697] <... setpgid resumed>) = 0 [pid 6700] setpgid(0, 0 [pid 6699] <... setpgid resumed>) = 0 [pid 6698] memfd_create("syzkaller", 0 [pid 6697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6700] <... setpgid resumed>) = 0 [pid 6699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6698] <... memfd_create resumed>) = 3 [pid 6697] <... openat resumed>) = 3 [pid 6700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6699] <... openat resumed>) = 3 [pid 6698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6697] write(3, "1000", 4 [pid 6700] <... openat resumed>) = 3 [pid 6699] write(3, "1000", 4 [pid 6698] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6697] <... write resumed>) = 4 [pid 6696] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6700] write(3, "1000", 4 [pid 6699] <... write resumed>) = 4 [pid 6697] close(3 [pid 6700] <... write resumed>) = 4 [pid 6699] close(3 [pid 6697] <... close resumed>) = 0 [pid 6700] close(3 [pid 6699] <... close resumed>) = 0 [pid 6697] symlink("/dev/binderfs", "./binderfs" [pid 6700] <... close resumed>) = 0 [pid 6699] symlink("/dev/binderfs", "./binderfs" [pid 6697] <... symlink resumed>) = 0 [pid 6700] symlink("/dev/binderfs", "./binderfs" [pid 6699] <... symlink resumed>) = 0 [pid 6697] memfd_create("syzkaller", 0 [pid 6700] <... symlink resumed>) = 0 [pid 6699] memfd_create("syzkaller", 0 [pid 6697] <... memfd_create resumed>) = 3 [pid 6700] memfd_create("syzkaller", 0 [pid 6699] <... memfd_create resumed>) = 3 [pid 6697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6700] <... memfd_create resumed>) = 3 [pid 6699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6697] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6699] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6700] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6695] <... write resumed>) = 2097152 [pid 6697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6695] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6695] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6695] <... openat resumed>) = 4 [pid 6695] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6700] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6695] close(3 [pid 6696] <... write resumed>) = 2097152 [pid 6695] <... close resumed>) = 0 [pid 6696] munmap(0x7f46b9f9b000, 2097152 [pid 6695] mkdir("./file0", 0777 [pid 6696] <... munmap resumed>) = 0 [pid 6696] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6695] <... mkdir resumed>) = 0 [pid 6696] <... openat resumed>) = 4 [pid 6695] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 158.384809][ T6695] loop4: detected capacity change from 0 to 4096 [ 158.420992][ T6696] loop0: detected capacity change from 0 to 4096 [pid 6696] ioctl(4, LOOP_SET_FD, 3 [pid 6699] <... write resumed>) = 2097152 [pid 6698] <... write resumed>) = 2097152 [pid 6698] munmap(0x7f46b9f9b000, 2097152 [pid 6696] <... ioctl resumed>) = 0 [pid 6696] close(3 [pid 6698] <... munmap resumed>) = 0 [pid 6696] <... close resumed>) = 0 [pid 6698] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6698] ioctl(4, LOOP_SET_FD, 3 [pid 6696] mkdir("./file0", 0777 [pid 6697] <... write resumed>) = 2097152 [pid 6696] <... mkdir resumed>) = 0 [pid 6697] munmap(0x7f46b9f9b000, 2097152 [pid 6696] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6698] <... ioctl resumed>) = 0 [pid 6697] <... munmap resumed>) = 0 [pid 6698] close(3) = 0 [pid 6699] munmap(0x7f46b9f9b000, 2097152 [ 158.427942][ T6695] NILFS (loop4): invalid segment: Checksum error in segment payload [ 158.454558][ T6698] loop2: detected capacity change from 0 to 4096 [ 158.464864][ T6695] NILFS (loop4): trying rollback from an earlier position [pid 6698] mkdir("./file0", 0777 [pid 6699] <... munmap resumed>) = 0 [pid 6698] <... mkdir resumed>) = 0 [pid 6697] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6698] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6699] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6697] <... openat resumed>) = 4 [pid 6699] ioctl(4, LOOP_SET_FD, 3 [ 158.482097][ T6696] NILFS (loop0): invalid segment: Checksum error in segment payload [ 158.495432][ T6698] NILFS (loop2): invalid segment: Checksum error in segment payload [ 158.501513][ T6695] NILFS (loop4): recovery complete [ 158.503432][ T6698] NILFS (loop2): trying rollback from an earlier position [ 158.508939][ T6696] NILFS (loop0): trying rollback from an earlier position [ 158.518371][ T6699] loop3: detected capacity change from 0 to 4096 [pid 6697] ioctl(4, LOOP_SET_FD, 3 [pid 6700] <... write resumed>) = 2097152 [pid 6700] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6697] <... ioctl resumed>) = 0 [pid 6695] <... mount resumed>) = 0 [pid 6700] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6700] ioctl(4, LOOP_SET_FD, 3 [pid 6697] close(3 [pid 6695] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6697] <... close resumed>) = 0 [pid 6695] <... openat resumed>) = 3 [pid 6697] mkdir("./file0", 0777 [pid 6695] chdir("./file0" [pid 6697] <... mkdir resumed>) = 0 [pid 6695] <... chdir resumed>) = 0 [pid 6699] <... ioctl resumed>) = 0 [pid 6697] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6695] ioctl(4, LOOP_CLR_FD) = 0 [ 158.531095][ T6697] loop5: detected capacity change from 0 to 4096 [ 158.540695][ T6701] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.545022][ T6700] loop1: detected capacity change from 0 to 4096 [ 158.558054][ T6696] NILFS (loop0): recovery complete [ 158.573589][ T6698] NILFS (loop2): recovery complete [pid 6699] close(3 [pid 6695] close(4 [pid 6700] <... ioctl resumed>) = 0 [pid 6700] close(3) = 0 [pid 6700] mkdir("./file0", 0777) = 0 [pid 6700] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6695] <... close resumed>) = 0 [pid 6695] creat("./bus", 000 [pid 6699] <... close resumed>) = 0 [pid 6698] <... mount resumed>) = 0 [pid 6698] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6698] chdir("./file0") = 0 [pid 6698] ioctl(4, LOOP_CLR_FD) = 0 [pid 6698] close(4) = 0 [pid 6698] creat("./bus", 000 [pid 6699] mkdir("./file0", 0777) = 0 [pid 6696] <... mount resumed>) = 0 [pid 6695] <... creat resumed>) = 4 [ 158.573934][ T6697] NILFS (loop5): invalid segment: Checksum error in segment payload [ 158.593835][ T6703] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.600216][ T6697] NILFS (loop5): trying rollback from an earlier position [ 158.611587][ T6702] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.625857][ T6700] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6699] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6696] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6695] unlink("./bus" [pid 6696] <... openat resumed>) = 3 [pid 6696] chdir("./file0" [pid 6695] <... unlink resumed>) = 0 [pid 6696] <... chdir resumed>) = 0 [pid 6695] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6696] ioctl(4, LOOP_CLR_FD) = 0 [pid 6696] close(4) = 0 [ 158.645443][ T6700] NILFS (loop1): trying rollback from an earlier position [pid 6696] creat("./bus", 000 [pid 6698] <... creat resumed>) = 4 [pid 6698] unlink("./bus" [pid 6696] <... creat resumed>) = 4 [pid 6696] unlink("./bus") = 0 [pid 6696] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6695] <... pwritev2 resumed>) = 65007 [pid 6698] <... unlink resumed>) = 0 [pid 6695] exit_group(0) = ? [pid 6698] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6697] <... mount resumed>) = 0 [pid 6695] +++ exited with 0 +++ [pid 6697] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 158.686254][ T6697] NILFS (loop5): recovery complete [ 158.692847][ T6699] NILFS (loop3): invalid segment: Checksum error in segment payload [ 158.702537][ T6699] NILFS (loop3): trying rollback from an earlier position [ 158.711582][ T6704] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.711630][ T6700] NILFS (loop1): recovery complete [pid 6698] <... pwritev2 resumed>) = 65007 [pid 6698] exit_group(0 [pid 6697] <... openat resumed>) = 3 [pid 6696] <... pwritev2 resumed>) = 65007 [pid 6696] exit_group(0) = ? [pid 6696] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6695, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 6698] <... exit_group resumed>) = ? [pid 6697] chdir("./file0" [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6696, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./141/binderfs") = 0 [pid 4997] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6697] <... chdir resumed>) = 0 [pid 6697] ioctl(4, LOOP_CLR_FD) = 0 [pid 6697] close(4 [pid 6700] <... mount resumed>) = 0 [pid 6698] +++ exited with 0 +++ [pid 6697] <... close resumed>) = 0 [pid 4993] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6700] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6697] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6700] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6700] chdir("./file0" [pid 4993] <... openat resumed>) = 3 [pid 6700] <... chdir resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6698, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] fstat(3, [pid 6700] ioctl(4, LOOP_CLR_FD [pid 4995] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6700] <... ioctl resumed>) = 0 [pid 4993] getdents64(3, [pid 6700] close(4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6697] <... creat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6700] <... close resumed>) = 0 [pid 6697] unlink("./bus" [pid 4995] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6700] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4993] lstat("./141/binderfs", [pid 6697] <... unlink resumed>) = 0 [pid 4995] fstat(3, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6699] <... mount resumed>) = 0 [pid 6697] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6699] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] unlink("./141/binderfs" [pid 6699] <... openat resumed>) = 3 [pid 4995] getdents64(3, [pid 4993] <... unlink resumed>) = 0 [pid 6699] chdir("./file0" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6699] <... chdir resumed>) = 0 [pid 4995] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6699] ioctl(4, LOOP_CLR_FD) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6699] close(4 [pid 4995] lstat("./138/binderfs", [pid 6700] <... creat resumed>) = 4 [pid 6700] unlink("./bus") = 0 [pid 6699] <... close resumed>) = 0 [pid 6700] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6699] creat("./bus", 000 [pid 4995] unlink("./138/binderfs") = 0 [pid 4995] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6699] <... creat resumed>) = 4 [ 158.749004][ T6699] NILFS (loop3): recovery complete [ 158.749424][ T6705] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 158.782466][ T6706] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6699] unlink("./bus") = 0 [pid 6697] <... pwritev2 resumed>) = 65007 [pid 4993] <... umount2 resumed>) = 0 [pid 6699] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6697] exit_group(0) = ? [pid 6697] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6697, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6699] <... pwritev2 resumed>) = 65007 [pid 6699] exit_group(0) = ? [pid 6700] <... pwritev2 resumed>) = 65007 [pid 6700] exit_group(0 [pid 4998] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6700] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./141/binderfs") = 0 [pid 4998] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./141/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6700] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6699] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6700, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4997] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6699, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] lstat("./141/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 4993] <... openat resumed>) = 4 [pid 4995] lstat("./138/file0", [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] fstat(4, [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4997] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 4994] lstat("./140/binderfs", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] getdents64(4, [pid 4997] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, [pid 4995] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./140/binderfs" [pid 4997] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] fstat(4, [pid 4996] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4996] lstat("./141/binderfs", [pid 4995] fstat(4, [pid 4993] close(4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 4996] unlink("./141/binderfs" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] rmdir("./141/file0" [pid 4996] <... unlink resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] close(4 [pid 4996] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(4, [pid 4993] getdents64(3, [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./141/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4993] close(3 [pid 4997] getdents64(3, [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... close resumed>) = 0 [pid 4997] close(3 [pid 4995] close(4 [pid 4993] rmdir("./141" [pid 4997] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] rmdir("./141" [pid 4995] rmdir("./138/file0" [pid 4993] mkdir("./142", 0777 [pid 4998] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] mkdir("./142", 0777 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] lstat("./141/file0", [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4994] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] lstat("./141/file0", [pid 4995] rmdir("./138" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(3 [pid 4998] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] lstat("./140/file0", [pid 4993] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4997] close(3 [pid 4996] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] mkdir("./139", 0777 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] fstat(4, [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... mkdir resumed>) = 0 [pid 4994] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6707 [pid 4998] getdents64(4, [pid 4996] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6708 [pid 4996] fstat(4, [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... openat resumed>) = 4 [pid 4998] getdents64(4, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] fstat(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(4, [pid 4995] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6707 attached [pid 4998] close(4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... close resumed>) = 0 [pid 4994] getdents64(4, ./strace-static-x86_64: Process 6708 attached [pid 6707] chdir("./142" [pid 4998] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6709 attached [pid 6708] chdir("./142" [pid 6707] <... chdir resumed>) = 0 [pid 4998] rmdir("./141/file0" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6709] chdir("./139" [pid 6708] <... chdir resumed>) = 0 [pid 6707] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6709 [pid 6707] <... prctl resumed>) = 0 [pid 4998] getdents64(3, [pid 6707] setpgid(0, 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6707] <... setpgid resumed>) = 0 [pid 4998] close(3 [pid 6707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... close resumed>) = 0 [pid 6707] <... openat resumed>) = 3 [pid 4998] rmdir("./141" [pid 6707] write(3, "1000", 4 [pid 6709] <... chdir resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] close(4 [pid 4994] getdents64(4, [pid 6709] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6708] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6707] <... write resumed>) = 4 [pid 4998] mkdir("./142", 0777 [pid 4996] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6707] close(3 [pid 4998] <... mkdir resumed>) = 0 [pid 6709] <... prctl resumed>) = 0 [pid 6708] <... prctl resumed>) = 0 [pid 6707] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] rmdir("./141/file0" [pid 6709] setpgid(0, 0 [pid 6708] setpgid(0, 0 [pid 6707] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... openat resumed>) = 3 [pid 4994] close(4 [pid 6709] <... setpgid resumed>) = 0 [pid 6708] <... setpgid resumed>) = 0 [pid 6707] <... symlink resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6707] memfd_create("syzkaller", 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] getdents64(3, [pid 4994] rmdir("./140/file0" [pid 6709] <... openat resumed>) = 3 [pid 6708] <... openat resumed>) = 3 [pid 6707] <... memfd_create resumed>) = 3 [pid 4998] close(3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6709] write(3, "1000", 4 [pid 6708] write(3, "1000", 4 [pid 6707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... close resumed>) = 0 [pid 4996] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 6709] <... write resumed>) = 4 [pid 6708] <... write resumed>) = 4 [pid 6707] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 6709] close(3 [pid 6708] close(3 [pid 4996] rmdir("./141" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6709] <... close resumed>) = 0 [pid 6708] <... close resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6710 ./strace-static-x86_64: Process 6710 attached [pid 6710] chdir("./142") = 0 [pid 6710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 6709] symlink("/dev/binderfs", "./binderfs" [pid 6708] symlink("/dev/binderfs", "./binderfs" [pid 4996] mkdir("./142", 0777 [pid 6710] setpgid(0, 0) = 0 [pid 6710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6710] write(3, "1000", 4) = 4 [pid 6710] close(3) = 0 [pid 6710] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6710] memfd_create("syzkaller", 0 [pid 4994] <... close resumed>) = 0 [pid 6710] <... memfd_create resumed>) = 3 [pid 6709] <... symlink resumed>) = 0 [pid 6708] <... symlink resumed>) = 0 [pid 6710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6708] memfd_create("syzkaller", 0 [pid 4994] rmdir("./140" [pid 6710] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6709] memfd_create("syzkaller", 0) = 3 [pid 6708] <... memfd_create resumed>) = 3 [pid 6707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] mkdir("./141", 0777 [pid 6709] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6708] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... mkdir resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6711 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6711 attached [pid 6711] chdir("./142" [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6712 [pid 6711] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 6712 attached [pid 6711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6712] chdir("./141" [pid 6711] setpgid(0, 0) = 0 [pid 6709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6707] <... write resumed>) = 2097152 [pid 6711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6712] <... chdir resumed>) = 0 [pid 6711] <... openat resumed>) = 3 [pid 6712] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6711] write(3, "1000", 4 [pid 6712] <... prctl resumed>) = 0 [pid 6711] <... write resumed>) = 4 [pid 6712] setpgid(0, 0 [pid 6711] close(3 [pid 6712] <... setpgid resumed>) = 0 [pid 6711] <... close resumed>) = 0 [pid 6712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6711] symlink("/dev/binderfs", "./binderfs" [pid 6712] <... openat resumed>) = 3 [pid 6711] <... symlink resumed>) = 0 [pid 6712] write(3, "1000", 4 [pid 6711] memfd_create("syzkaller", 0 [pid 6712] <... write resumed>) = 4 [pid 6711] <... memfd_create resumed>) = 3 [pid 6712] close(3 [pid 6711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6712] <... close resumed>) = 0 [pid 6711] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6712] symlink("/dev/binderfs", "./binderfs" [pid 6707] munmap(0x7f46b9f9b000, 2097152 [pid 6712] <... symlink resumed>) = 0 [pid 6712] memfd_create("syzkaller", 0) = 3 [pid 6707] <... munmap resumed>) = 0 [pid 6712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6707] ioctl(4, LOOP_SET_FD, 3 [pid 6712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6710] <... write resumed>) = 2097152 [pid 6709] <... write resumed>) = 2097152 [pid 6708] <... write resumed>) = 2097152 [pid 6707] <... ioctl resumed>) = 0 [pid 6709] munmap(0x7f46b9f9b000, 2097152 [pid 6708] munmap(0x7f46b9f9b000, 2097152 [pid 6707] close(3) = 0 [pid 6709] <... munmap resumed>) = 0 [pid 6707] mkdir("./file0", 0777 [pid 6710] munmap(0x7f46b9f9b000, 2097152 [pid 6709] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6708] <... munmap resumed>) = 0 [pid 6707] <... mkdir resumed>) = 0 [pid 6712] <... write resumed>) = 2097152 [pid 6710] <... munmap resumed>) = 0 [pid 6709] <... openat resumed>) = 4 [pid 6708] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6707] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6712] munmap(0x7f46b9f9b000, 2097152 [pid 6711] <... write resumed>) = 2097152 [pid 6710] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6709] ioctl(4, LOOP_SET_FD, 3 [pid 6708] <... openat resumed>) = 4 [pid 6712] <... munmap resumed>) = 0 [pid 6711] munmap(0x7f46b9f9b000, 2097152 [pid 6710] <... openat resumed>) = 4 [ 159.132564][ T6707] loop0: detected capacity change from 0 to 4096 [pid 6710] ioctl(4, LOOP_SET_FD, 3 [pid 6712] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6711] <... munmap resumed>) = 0 [pid 6709] <... ioctl resumed>) = 0 [pid 6708] ioctl(4, LOOP_SET_FD, 3 [pid 6710] <... ioctl resumed>) = 0 [pid 6710] close(3) = 0 [pid 6710] mkdir("./file0", 0777) = 0 [pid 6710] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6712] <... openat resumed>) = 4 [pid 6712] ioctl(4, LOOP_SET_FD, 3 [pid 6711] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6709] close(3 [pid 6708] <... ioctl resumed>) = 0 [pid 6711] <... openat resumed>) = 4 [pid 6709] <... close resumed>) = 0 [pid 6711] ioctl(4, LOOP_SET_FD, 3 [pid 6709] mkdir("./file0", 0777 [pid 6712] <... ioctl resumed>) = 0 [pid 6708] close(3 [pid 6709] <... mkdir resumed>) = 0 [pid 6708] <... close resumed>) = 0 [pid 6712] close(3 [pid 6709] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6708] mkdir("./file0", 0777 [pid 6712] <... close resumed>) = 0 [ 159.192702][ T6709] loop2: detected capacity change from 0 to 4096 [ 159.194203][ T6710] loop5: detected capacity change from 0 to 4096 [ 159.205276][ T6707] NILFS (loop0): invalid segment: Checksum error in segment payload [ 159.214053][ T6708] loop4: detected capacity change from 0 to 4096 [ 159.216037][ T6707] NILFS (loop0): trying rollback from an earlier position [ 159.224911][ T6710] NILFS (loop5): invalid segment: Checksum error in segment payload [ 159.236303][ T6712] loop1: detected capacity change from 0 to 4096 [pid 6712] mkdir("./file0", 0777 [pid 6708] <... mkdir resumed>) = 0 [pid 6712] <... mkdir resumed>) = 0 [pid 6708] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6712] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6707] <... mount resumed>) = 0 [ 159.247565][ T6707] NILFS (loop0): recovery complete [ 159.250001][ T6709] NILFS (loop2): invalid segment: Checksum error in segment payload [ 159.254850][ T6711] loop3: detected capacity change from 0 to 4096 [ 159.261857][ T6710] NILFS (loop5): trying rollback from an earlier position [ 159.271884][ T6708] NILFS (loop4): invalid segment: Checksum error in segment payload [ 159.275351][ T6713] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6707] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6711] <... ioctl resumed>) = 0 [pid 6711] close(3) = 0 [pid 6711] mkdir("./file0", 0777) = 0 [pid 6711] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6707] <... openat resumed>) = 3 [pid 6707] chdir("./file0") = 0 [pid 6707] ioctl(4, LOOP_CLR_FD) = 0 [pid 6707] close(4) = 0 [ 159.284666][ T6708] NILFS (loop4): trying rollback from an earlier position [ 159.293552][ T6709] NILFS (loop2): trying rollback from an earlier position [ 159.306981][ T6712] NILFS (loop1): invalid segment: Checksum error in segment payload [ 159.317207][ T6712] NILFS (loop1): trying rollback from an earlier position [ 159.320785][ T6711] NILFS (loop3): invalid segment: Checksum error in segment payload [ 159.338118][ T6711] NILFS (loop3): trying rollback from an earlier position [pid 6707] creat("./bus", 000) = 4 [pid 6707] unlink("./bus" [pid 6708] <... mount resumed>) = 0 [pid 6708] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6708] chdir("./file0") = 0 [pid 6708] ioctl(4, LOOP_CLR_FD) = 0 [pid 6708] close(4) = 0 [pid 6707] <... unlink resumed>) = 0 [ 159.350320][ T6708] NILFS (loop4): recovery complete [ 159.350386][ T6712] NILFS (loop1): recovery complete [ 159.360886][ T6709] NILFS (loop2): recovery complete [ 159.377440][ T6710] NILFS (loop5): recovery complete [ 159.382257][ T6714] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6708] creat("./bus", 000 [pid 6712] <... mount resumed>) = 0 [pid 6707] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6712] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6712] chdir("./file0") = 0 [pid 6712] ioctl(4, LOOP_CLR_FD) = 0 [pid 6712] close(4) = 0 [pid 6712] creat("./bus", 000 [pid 6709] <... mount resumed>) = 0 [pid 6709] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6709] chdir("./file0" [pid 6708] <... creat resumed>) = 4 [pid 6709] <... chdir resumed>) = 0 [pid 6708] unlink("./bus" [pid 6709] ioctl(4, LOOP_CLR_FD [pid 6708] <... unlink resumed>) = 0 [pid 6709] <... ioctl resumed>) = 0 [pid 6708] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6709] close(4) = 0 [pid 6709] creat("./bus", 000 [pid 6710] <... mount resumed>) = 0 [pid 6710] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6710] chdir("./file0" [pid 6709] <... creat resumed>) = 4 [pid 6710] <... chdir resumed>) = 0 [pid 6709] unlink("./bus" [pid 6710] ioctl(4, LOOP_CLR_FD) = 0 [pid 6709] <... unlink resumed>) = 0 [pid 6710] close(4 [pid 6709] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6710] <... close resumed>) = 0 [pid 6710] creat("./bus", 000) = 4 [pid 6710] unlink("./bus") = 0 [pid 6712] <... creat resumed>) = 4 [ 159.394850][ T6715] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.404047][ T6716] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 159.418927][ T6711] NILFS (loop3): recovery complete [ 159.421685][ T6717] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6710] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6712] unlink("./bus" [pid 6711] <... mount resumed>) = 0 [pid 6708] <... pwritev2 resumed>) = 65007 [pid 6707] <... pwritev2 resumed>) = 65007 [pid 6712] <... unlink resumed>) = 0 [pid 6711] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6709] <... pwritev2 resumed>) = 65007 [pid 6708] exit_group(0 [pid 6707] exit_group(0 [pid 6712] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6711] <... openat resumed>) = 3 [pid 6709] exit_group(0 [pid 6708] <... exit_group resumed>) = ? [pid 6707] <... exit_group resumed>) = ? [pid 6711] chdir("./file0") = 0 [pid 6711] ioctl(4, LOOP_CLR_FD) = 0 [pid 6711] close(4) = 0 [pid 6711] creat("./bus", 000 [pid 6710] <... pwritev2 resumed>) = 65007 [pid 6710] exit_group(0) = ? [pid 6709] <... exit_group resumed>) = ? [pid 6707] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6707, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./142/binderfs", [pid 6710] +++ exited with 0 +++ [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6710, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] unlink("./142/binderfs" [pid 4998] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6712] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6712] exit_group(0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6712] <... exit_group resumed>) = ? [pid 6708] +++ exited with 0 +++ [pid 4998] lstat("./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6708, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4998] unlink("./142/binderfs") = 0 [pid 4998] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 159.464815][ T6718] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, [pid 6709] +++ exited with 0 +++ [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6709, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./142/binderfs") = 0 [pid 4997] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./139/binderfs") = 0 [pid 4995] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6712] +++ exited with 0 +++ [pid 6711] <... creat resumed>) = 4 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6712, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6711] unlink("./bus" [pid 4994] <... restart_syscall resumed>) = 0 [pid 6711] <... unlink resumed>) = 0 [pid 4994] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./141/binderfs") = 0 [pid 4994] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6711] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = 0 [pid 4994] lstat("./141/file0", [pid 4993] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./142/file0", [pid 4994] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6711] <... pwritev2 resumed>) = 65007 [pid 4993] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [pid 6711] exit_group(0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6711] <... exit_group resumed>) = ? [pid 4994] fstat(4, [pid 4993] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... umount2 resumed>) = 0 [pid 4995] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(4, [pid 4994] close(4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./141/file0" [pid 4993] close(4 [pid 4995] lstat("./139/file0", [pid 4993] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] rmdir("./142/file0" [pid 4995] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 4994] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 4993] close(3) = 0 [pid 4994] rmdir("./141" [pid 4993] rmdir("./142" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 4 [pid 4997] lstat("./142/file0", [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] mkdir("./143", 0777 [pid 4997] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(4, [pid 4997] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... mkdir resumed>) = 0 [pid 4994] mkdir("./142", 0777 [pid 4997] <... openat resumed>) = 4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] getdents64(4, [pid 4997] fstat(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] close(4 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4995] rmdir("./139/file0" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./142/file0") = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./139" [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./142" [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./140", 0777) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4997] mkdir("./143", 0777 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... openat resumed>) = 3 [pid 4995] close(3 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3 [pid 4993] <... close resumed>) = 0 [pid 4997] close(3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6722 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6720 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6721 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6719 [pid 6711] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6711, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- ./strace-static-x86_64: Process 6719 attached ./strace-static-x86_64: Process 6721 attached [pid 6721] chdir("./142" [pid 6719] chdir("./143"./strace-static-x86_64: Process 6722 attached [pid 6721] <... chdir resumed>) = 0 [pid 6719] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 6720 attached [pid 6722] chdir("./143" [pid 6721] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6719] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6722] <... chdir resumed>) = 0 [pid 6721] <... prctl resumed>) = 0 [pid 6720] chdir("./140" [pid 6719] <... prctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6721] setpgid(0, 0 [pid 6720] <... chdir resumed>) = 0 [pid 6719] setpgid(0, 0 [pid 4996] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6722] <... prctl resumed>) = 0 [pid 6721] <... setpgid resumed>) = 0 [pid 6720] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6719] <... setpgid resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6722] setpgid(0, 0 [pid 6721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6720] <... prctl resumed>) = 0 [pid 6719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] fstat(3, [pid 6722] <... setpgid resumed>) = 0 [pid 6721] <... openat resumed>) = 3 [pid 6720] setpgid(0, 0 [pid 6719] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6721] write(3, "1000", 4 [pid 6720] <... setpgid resumed>) = 0 [pid 6719] write(3, "1000", 4 [pid 4996] getdents64(3, [pid 6722] <... openat resumed>) = 3 [pid 6721] <... write resumed>) = 4 [pid 6720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6719] <... write resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6722] write(3, "1000", 4 [pid 6721] close(3 [pid 6720] <... openat resumed>) = 3 [pid 6719] close(3 [pid 4998] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6722] <... write resumed>) = 4 [pid 6721] <... close resumed>) = 0 [pid 6720] write(3, "1000", 4 [pid 6719] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6722] close(3 [pid 6721] symlink("/dev/binderfs", "./binderfs" [pid 6720] <... write resumed>) = 4 [pid 6719] symlink("/dev/binderfs", "./binderfs" [pid 4998] lstat("./142/file0", [pid 4996] lstat("./142/binderfs", [pid 6722] <... close resumed>) = 0 [pid 6721] <... symlink resumed>) = 0 [pid 6720] close(3 [pid 6719] <... symlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6722] symlink("/dev/binderfs", "./binderfs" [pid 6721] memfd_create("syzkaller", 0 [pid 6720] <... close resumed>) = 0 [pid 6719] memfd_create("syzkaller", 0 [pid 4998] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] unlink("./142/binderfs" [pid 6722] <... symlink resumed>) = 0 [pid 6721] <... memfd_create resumed>) = 3 [pid 6720] symlink("/dev/binderfs", "./binderfs" [pid 6719] <... memfd_create resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... unlink resumed>) = 0 [pid 6722] memfd_create("syzkaller", 0 [pid 6721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6720] <... symlink resumed>) = 0 [pid 6719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6722] <... memfd_create resumed>) = 3 [pid 6721] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6720] memfd_create("syzkaller", 0 [pid 6719] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... openat resumed>) = 4 [pid 6722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6720] <... memfd_create resumed>) = 3 [pid 6722] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] fstat(4, [pid 6720] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./142/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./142") = 0 [pid 4998] mkdir("./143", 0777 [pid 6720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... mkdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6723 [pid 6719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 6723 attached [pid 6722] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6723] chdir("./143" [pid 4996] <... umount2 resumed>) = 0 [pid 6723] <... chdir resumed>) = 0 [pid 4996] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6723] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6723] <... prctl resumed>) = 0 [pid 4996] lstat("./142/file0", [pid 6723] setpgid(0, 0) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6723] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6723] write(3, "1000", 4 [pid 4996] fstat(4, [pid 6723] <... write resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 6723] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6723] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 6723] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6723] <... symlink resumed>) = 0 [pid 4996] close(4 [pid 6723] memfd_create("syzkaller", 0 [pid 4996] <... close resumed>) = 0 [pid 6723] <... memfd_create resumed>) = 3 [pid 4996] rmdir("./142/file0") = 0 [pid 6723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6723] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] close(3) = 0 [pid 4996] rmdir("./142") = 0 [pid 4996] mkdir("./143", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 6722] <... write resumed>) = 2097152 [pid 6720] <... write resumed>) = 2097152 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6724 ./strace-static-x86_64: Process 6724 attached [pid 6719] <... write resumed>) = 2097152 [pid 6720] munmap(0x7f46b9f9b000, 2097152 [pid 6724] chdir("./143" [pid 6720] <... munmap resumed>) = 0 [pid 6719] munmap(0x7f46b9f9b000, 2097152 [pid 6724] <... chdir resumed>) = 0 [pid 6724] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6722] munmap(0x7f46b9f9b000, 2097152 [pid 6719] <... munmap resumed>) = 0 [pid 6724] <... prctl resumed>) = 0 [pid 6722] <... munmap resumed>) = 0 [pid 6721] <... write resumed>) = 2097152 [pid 6720] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6719] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6724] setpgid(0, 0 [pid 6721] munmap(0x7f46b9f9b000, 2097152 [pid 6720] <... openat resumed>) = 4 [pid 6719] <... openat resumed>) = 4 [pid 6722] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6720] ioctl(4, LOOP_SET_FD, 3 [pid 6724] <... setpgid resumed>) = 0 [pid 6719] ioctl(4, LOOP_SET_FD, 3 [pid 6724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6722] <... openat resumed>) = 4 [pid 6721] <... munmap resumed>) = 0 [pid 6722] ioctl(4, LOOP_SET_FD, 3 [pid 6724] <... openat resumed>) = 3 [pid 6719] <... ioctl resumed>) = 0 [pid 6719] close(3) = 0 [pid 6719] mkdir("./file0", 0777 [pid 6720] <... ioctl resumed>) = 0 [pid 6720] close(3) = 0 [pid 6720] mkdir("./file0", 0777 [pid 6719] <... mkdir resumed>) = 0 [pid 6719] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6720] <... mkdir resumed>) = 0 [pid 6720] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6721] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6724] write(3, "1000", 4) = 4 [pid 6721] ioctl(4, LOOP_SET_FD, 3 [pid 6724] close(3) = 0 [pid 6724] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6724] memfd_create("syzkaller", 0) = 3 [pid 6724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6722] <... ioctl resumed>) = 0 [pid 6722] close(3) = 0 [pid 6722] mkdir("./file0", 0777) = 0 [ 159.774382][ T6719] loop0: detected capacity change from 0 to 4096 [ 159.780989][ T6720] loop2: detected capacity change from 0 to 4096 [ 159.801191][ T6722] loop4: detected capacity change from 0 to 4096 [ 159.801269][ T6721] loop1: detected capacity change from 0 to 4096 [pid 6722] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6724] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6723] <... write resumed>) = 2097152 [pid 6721] <... ioctl resumed>) = 0 [pid 6723] munmap(0x7f46b9f9b000, 2097152 [pid 6721] close(3) = 0 [pid 6721] mkdir("./file0", 0777 [pid 6723] <... munmap resumed>) = 0 [pid 6721] <... mkdir resumed>) = 0 [ 159.834459][ T6720] NILFS (loop2): invalid segment: Checksum error in segment payload [ 159.842503][ T6720] NILFS (loop2): trying rollback from an earlier position [ 159.868465][ T6719] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6723] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6721] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6723] <... openat resumed>) = 4 [ 159.911244][ T6722] NILFS (loop4): invalid segment: Checksum error in segment payload [ 159.931248][ T6721] NILFS (loop1): invalid segment: Checksum error in segment payload [ 159.933444][ T6722] NILFS (loop4): trying rollback from an earlier position [ 159.946987][ T6719] NILFS (loop0): trying rollback from an earlier position [pid 6723] ioctl(4, LOOP_SET_FD, 3 [pid 6724] <... write resumed>) = 2097152 [pid 6724] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6724] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 159.971524][ T6721] NILFS (loop1): trying rollback from an earlier position [ 159.979888][ T6720] NILFS (loop2): recovery complete [ 159.993446][ T6723] loop5: detected capacity change from 0 to 4096 [ 159.995905][ T6722] NILFS (loop4): recovery complete [ 160.015565][ T6724] loop3: detected capacity change from 0 to 4096 [pid 6724] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6724] close(3) = 0 [pid 6723] <... ioctl resumed>) = 0 [pid 6724] mkdir("./file0", 0777 [pid 6723] close(3 [pid 6724] <... mkdir resumed>) = 0 [pid 6723] <... close resumed>) = 0 [pid 6724] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6723] mkdir("./file0", 0777 [pid 6722] <... mount resumed>) = 0 [pid 6720] <... mount resumed>) = 0 [pid 6719] <... mount resumed>) = 0 [pid 6723] <... mkdir resumed>) = 0 [pid 6722] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6720] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6719] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6722] <... openat resumed>) = 3 [pid 6719] <... openat resumed>) = 3 [ 160.025134][ T6719] NILFS (loop0): recovery complete [ 160.025391][ T6725] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.046920][ T6726] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.057927][ T6727] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6722] chdir("./file0") = 0 [pid 6720] <... openat resumed>) = 3 [pid 6719] chdir("./file0" [pid 6723] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6720] chdir("./file0") = 0 [pid 6720] ioctl(4, LOOP_CLR_FD) = 0 [pid 6720] close(4) = 0 [pid 6720] creat("./bus", 000 [pid 6722] ioctl(4, LOOP_CLR_FD [pid 6719] <... chdir resumed>) = 0 [pid 6722] <... ioctl resumed>) = 0 [pid 6719] ioctl(4, LOOP_CLR_FD [pid 6722] close(4 [pid 6719] <... ioctl resumed>) = 0 [pid 6722] <... close resumed>) = 0 [pid 6719] close(4 [pid 6722] creat("./bus", 000 [pid 6719] <... close resumed>) = 0 [pid 6719] creat("./bus", 000 [pid 6720] <... creat resumed>) = 4 [pid 6720] unlink("./bus") = 0 [pid 6720] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6722] <... creat resumed>) = 4 [pid 6719] <... creat resumed>) = 4 [ 160.076430][ T6721] NILFS (loop1): recovery complete [pid 6722] unlink("./bus" [pid 6719] unlink("./bus" [pid 6722] <... unlink resumed>) = 0 [pid 6719] <... unlink resumed>) = 0 [pid 6722] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6719] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6720] <... pwritev2 resumed>) = 65007 [ 160.098551][ T6724] NILFS (loop3): invalid segment: Checksum error in segment payload [ 160.127182][ T6723] NILFS (loop5): invalid segment: Checksum error in segment payload [ 160.140708][ T6724] NILFS (loop3): trying rollback from an earlier position [pid 6722] <... pwritev2 resumed>) = 65007 [pid 6721] <... mount resumed>) = 0 [pid 6720] exit_group(0 [pid 6719] <... pwritev2 resumed>) = 65007 [pid 6722] exit_group(0 [pid 6721] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6720] <... exit_group resumed>) = ? [pid 6719] exit_group(0 [pid 6721] <... openat resumed>) = 3 [pid 6721] chdir("./file0") = 0 [pid 6721] ioctl(4, LOOP_CLR_FD) = 0 [pid 6721] close(4) = 0 [pid 6721] creat("./bus", 000 [pid 6722] <... exit_group resumed>) = ? [pid 6720] +++ exited with 0 +++ [pid 6719] <... exit_group resumed>) = ? [pid 6722] +++ exited with 0 +++ [pid 6721] <... creat resumed>) = 4 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6720, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 6721] unlink("./bus" [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6722, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4995] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW [ 160.148067][ T6728] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.166896][ T6723] NILFS (loop5): trying rollback from an earlier position [pid 4997] <... restart_syscall resumed>) = 0 [pid 6719] +++ exited with 0 +++ [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6721] <... unlink resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] getdents64(3, [pid 6721] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6724] <... mount resumed>) = 0 [pid 4997] fstat(3, [pid 4995] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6719, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(3, [pid 4995] lstat("./140/binderfs", [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] unlink("./140/binderfs" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... unlink resumed>) = 0 [pid 4997] lstat("./143/binderfs", [pid 4995] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] unlink("./143/binderfs") = 0 [pid 6724] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6724] <... openat resumed>) = 3 [pid 6723] <... mount resumed>) = 0 [pid 6721] <... pwritev2 resumed>) = 65007 [pid 6723] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6721] exit_group(0 [pid 6723] <... openat resumed>) = 3 [pid 6721] <... exit_group resumed>) = ? [pid 6723] chdir("./file0") = 0 [pid 6723] ioctl(4, LOOP_CLR_FD) = 0 [pid 6723] close(4) = 0 [pid 6723] creat("./bus", 000 [pid 6724] chdir("./file0" [ 160.203856][ T6724] NILFS (loop3): recovery complete [ 160.210817][ T6723] NILFS (loop5): recovery complete [ 160.218231][ T6729] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.237062][ T6730] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6724] <... chdir resumed>) = 0 [pid 6723] <... creat resumed>) = 4 [pid 6721] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 6723] unlink("./bus" [pid 4997] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6724] ioctl(4, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 3 [pid 6724] <... ioctl resumed>) = 0 [pid 6723] <... unlink resumed>) = 0 [pid 4997] lstat("./143/file0", [pid 6724] close(4 [pid 6723] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6721, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4993] fstat(3, [pid 6724] <... close resumed>) = 0 [pid 4997] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6724] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(3, [pid 4997] getdents64(4, [pid 6724] <... creat resumed>) = 4 [pid 6723] <... pwritev2 resumed>) = 65007 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6724] unlink("./bus" [pid 6723] exit_group(0 [pid 4997] close(4 [pid 6723] <... exit_group resumed>) = ? [pid 4997] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6724] <... unlink resumed>) = 0 [pid 4997] rmdir("./143/file0" [pid 4995] <... umount2 resumed>) = 0 [pid 6724] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./143") = 0 [pid 4997] mkdir("./144", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] lstat("./140/file0", [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./143/binderfs", [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6731 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] unlink("./143/binderfs" [pid 4994] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6731 attached [pid 4995] getdents64(4, [pid 4994] lstat("./142/binderfs", [pid 6731] chdir("./144" [pid 6723] +++ exited with 0 +++ [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6731] <... chdir resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6723, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4995] getdents64(4, [pid 6731] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] unlink("./142/binderfs" [pid 6731] <... prctl resumed>) = 0 [pid 4995] close(4 [pid 6731] setpgid(0, 0 [pid 4998] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 6731] <... setpgid resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] rmdir("./140/file0" [pid 6731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... rmdir resumed>) = 0 [pid 4994] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6731] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4995] getdents64(3, [pid 6731] write(3, "1000", 4 [pid 4998] fstat(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6731] <... write resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] close(3 [pid 6731] close(3 [pid 4998] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 6731] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] rmdir("./140" [pid 6731] symlink("/dev/binderfs", "./binderfs" [pid 4998] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 6731] <... symlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] mkdir("./141", 0777 [pid 6731] memfd_create("syzkaller", 0 [pid 4998] lstat("./143/binderfs", [pid 4995] <... mkdir resumed>) = 0 [pid 6731] <... memfd_create resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] unlink("./143/binderfs" [pid 4995] <... openat resumed>) = 3 [pid 6731] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... unlink resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6732 ./strace-static-x86_64: Process 6732 attached [pid 6724] <... pwritev2 resumed>) = 65007 [pid 6732] chdir("./141") = 0 [pid 6732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6732] setpgid(0, 0) = 0 [pid 6732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6724] exit_group(0) = ? [pid 6732] write(3, "1000", 4) = 4 [pid 6732] close(3) = 0 [pid 6732] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... umount2 resumed>) = 0 [pid 6732] <... symlink resumed>) = 0 [pid 6732] memfd_create("syzkaller", 0 [pid 4993] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6732] <... memfd_create resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4993] lstat("./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 6724] +++ exited with 0 +++ [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6724, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] lstat("./142/file0", [pid 4993] rmdir("./143/file0" [pid 4996] <... openat resumed>) = 3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4996] fstat(3, [pid 4993] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(3, [pid 4993] close(3 [pid 4998] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] rmdir("./143" [pid 4998] lstat("./143/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] lstat("./143/binderfs", [pid 4994] fstat(4, [pid 4993] mkdir("./144", 0777 [pid 4998] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] unlink("./143/binderfs" [pid 4994] getdents64(4, [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 4 [pid 4996] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] fstat(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 4998] getdents64(4, [pid 4993] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] close(4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] getdents64(4, [pid 4994] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6733 [pid 4998] close(4) = 0 [pid 4994] rmdir("./142/file0" [pid 4998] rmdir("./143/file0"./strace-static-x86_64: Process 6733 attached ) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6733] chdir("./144" [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6733] <... chdir resumed>) = 0 [pid 4998] close(3 [pid 4994] getdents64(3, [pid 6733] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6733] <... prctl resumed>) = 0 [pid 4998] rmdir("./143" [pid 4996] <... umount2 resumed>) = 0 [pid 6733] setpgid(0, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 6733] <... setpgid resumed>) = 0 [pid 4998] mkdir("./144", 0777 [pid 4994] <... close resumed>) = 0 [pid 6733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... mkdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4994] rmdir("./142" [pid 6733] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 6733] write(3, "1000", 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] mkdir("./143", 0777 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... mkdir resumed>) = 0 [pid 6733] <... write resumed>) = 4 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6734 [pid 6733] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6733] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6733] symlink("/dev/binderfs", "./binderfs" [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6733] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] close(3 [pid 4996] lstat("./143/file0", [pid 4994] <... close resumed>) = 0 [pid 6733] memfd_create("syzkaller", 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6734 attached [pid 6733] <... memfd_create resumed>) = 3 [pid 4996] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6734] chdir("./144" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6734] <... chdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6734] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... openat resumed>) = 4 [pid 6734] <... prctl resumed>) = 0 [pid 6733] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] fstat(4, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6735 [pid 6734] setpgid(0, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6734] <... setpgid resumed>) = 0 [pid 4996] getdents64(4, [pid 6734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6734] <... openat resumed>) = 3 [pid 6731] <... write resumed>) = 2097152 [pid 4996] getdents64(4, [pid 6734] write(3, "1000", 4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6734] <... write resumed>) = 4 [pid 4996] close(4 [pid 6734] close(3 [pid 4996] <... close resumed>) = 0 [pid 6734] <... close resumed>) = 0 [pid 4996] rmdir("./143/file0" [pid 6734] symlink("/dev/binderfs", "./binderfs" [pid 6731] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6735 attached [pid 6734] <... symlink resumed>) = 0 [pid 6731] <... munmap resumed>) = 0 [pid 4996] getdents64(3, [pid 6734] memfd_create("syzkaller", 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6735] chdir("./143" [pid 6734] <... memfd_create resumed>) = 3 [pid 6731] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] close(3 [pid 6735] <... chdir resumed>) = 0 [pid 6734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6731] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 6734] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6731] ioctl(4, LOOP_SET_FD, 3 [pid 4996] rmdir("./143" [pid 6735] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6731] <... ioctl resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6735] <... prctl resumed>) = 0 [pid 6731] close(3 [pid 4996] mkdir("./144", 0777 [pid 6735] setpgid(0, 0 [pid 6731] <... close resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 6731] mkdir("./file0", 0777 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6735] <... setpgid resumed>) = 0 [pid 6731] <... mkdir resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6731] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6735] <... openat resumed>) = 3 [pid 6733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6735] write(3, "1000", 4 [pid 4996] close(3 [pid 6735] <... write resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 6735] close(3 [pid 6732] <... write resumed>) = 2097152 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6735] <... close resumed>) = 0 [pid 6735] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6736 [pid 6735] <... symlink resumed>) = 0 [pid 6735] memfd_create("syzkaller", 0./strace-static-x86_64: Process 6736 attached ) = 3 [pid 6732] munmap(0x7f46b9f9b000, 2097152 [pid 6736] chdir("./144" [pid 6735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6732] <... munmap resumed>) = 0 [pid 6736] <... chdir resumed>) = 0 [pid 6735] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6732] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 160.554595][ T6731] loop4: detected capacity change from 0 to 4096 [ 160.593519][ T6731] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6732] ioctl(4, LOOP_SET_FD, 3 [pid 6736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6736] setpgid(0, 0) = 0 [pid 6736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6736] write(3, "1000", 4) = 4 [pid 6734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6736] close(3) = 0 [pid 6736] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6736] memfd_create("syzkaller", 0) = 3 [pid 6735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6734] <... write resumed>) = 2097152 [pid 6733] <... write resumed>) = 2097152 [pid 6736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6732] <... ioctl resumed>) = 0 [pid 6732] close(3 [pid 6736] <... mmap resumed>) = 0x7f46b9f9b000 [ 160.603657][ T6732] loop2: detected capacity change from 0 to 4096 [pid 6732] <... close resumed>) = 0 [pid 6732] mkdir("./file0", 0777) = 0 [pid 6732] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6734] munmap(0x7f46b9f9b000, 2097152 [pid 6733] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6733] ioctl(4, LOOP_SET_FD, 3 [pid 6734] <... munmap resumed>) = 0 [pid 6734] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6734] ioctl(4, LOOP_SET_FD, 3 [pid 6736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6735] <... write resumed>) = 2097152 [pid 6733] <... ioctl resumed>) = 0 [pid 6733] close(3) = 0 [pid 6733] mkdir("./file0", 0777) = 0 [ 160.641615][ T6731] NILFS (loop4): trying rollback from an earlier position [ 160.655247][ T6732] NILFS (loop2): invalid segment: Checksum error in segment payload [ 160.667361][ T6733] loop0: detected capacity change from 0 to 4096 [ 160.672421][ T6734] loop5: detected capacity change from 0 to 4096 [pid 6733] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6734] <... ioctl resumed>) = 0 [pid 6734] close(3) = 0 [pid 6734] mkdir("./file0", 0777) = 0 [pid 6734] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6735] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6735] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [ 160.693914][ T6732] NILFS (loop2): trying rollback from an earlier position [ 160.694959][ T6733] NILFS (loop0): invalid segment: Checksum error in segment payload [ 160.710820][ T6731] NILFS (loop4): recovery complete [ 160.720259][ T6735] loop1: detected capacity change from 0 to 4096 [ 160.731125][ T6734] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6735] ioctl(4, LOOP_SET_FD, 3 [pid 6736] <... write resumed>) = 2097152 [pid 6735] <... ioctl resumed>) = 0 [pid 6736] munmap(0x7f46b9f9b000, 2097152 [pid 6735] close(3 [pid 6731] <... mount resumed>) = 0 [pid 6736] <... munmap resumed>) = 0 [pid 6735] <... close resumed>) = 0 [pid 6731] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6736] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6735] mkdir("./file0", 0777 [pid 6731] <... openat resumed>) = 3 [pid 6736] <... openat resumed>) = 4 [pid 6735] <... mkdir resumed>) = 0 [pid 6736] ioctl(4, LOOP_SET_FD, 3 [pid 6735] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6731] chdir("./file0") = 0 [ 160.731599][ T6733] NILFS (loop0): trying rollback from an earlier position [ 160.744367][ T6737] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.757850][ T6733] NILFS (loop0): recovery complete [ 160.760172][ T6734] NILFS (loop5): trying rollback from an earlier position [ 160.772318][ T6736] loop3: detected capacity change from 0 to 4096 [ 160.781091][ T6732] NILFS (loop2): recovery complete [ 160.785251][ T6735] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6731] ioctl(4, LOOP_CLR_FD) = 0 [pid 6731] close(4) = 0 [pid 6736] <... ioctl resumed>) = 0 [pid 6731] creat("./bus", 000 [pid 6732] <... mount resumed>) = 0 [pid 6732] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6732] chdir("./file0") = 0 [pid 6732] ioctl(4, LOOP_CLR_FD) = 0 [pid 6732] close(4) = 0 [pid 6736] close(3 [pid 6734] <... mount resumed>) = 0 [pid 6732] creat("./bus", 000 [pid 6733] <... mount resumed>) = 0 [pid 6733] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6733] chdir("./file0") = 0 [pid 6733] ioctl(4, LOOP_CLR_FD) = 0 [pid 6733] close(4) = 0 [pid 6733] creat("./bus", 000 [pid 6734] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6734] chdir("./file0") = 0 [pid 6734] ioctl(4, LOOP_CLR_FD) = 0 [pid 6734] close(4) = 0 [pid 6734] creat("./bus", 000 [pid 6732] <... creat resumed>) = 4 [pid 6736] <... close resumed>) = 0 [pid 6736] mkdir("./file0", 0777 [pid 6732] unlink("./bus" [pid 6736] <... mkdir resumed>) = 0 [pid 6736] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6731] <... creat resumed>) = 4 [pid 6731] unlink("./bus") = 0 [pid 6731] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6732] <... unlink resumed>) = 0 [ 160.800112][ T6734] NILFS (loop5): recovery complete [ 160.806395][ T6739] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.816612][ T6735] NILFS (loop1): trying rollback from an earlier position [ 160.823716][ T6740] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.825212][ T6738] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6732] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6731] <... pwritev2 resumed>) = 65007 [pid 6731] exit_group(0) = ? [pid 6732] <... pwritev2 resumed>) = 65007 [pid 6732] exit_group(0) = ? [pid 6734] <... creat resumed>) = 4 [pid 6734] unlink("./bus" [pid 6732] +++ exited with 0 +++ [pid 6734] <... unlink resumed>) = 0 [ 160.868840][ T6736] NILFS (loop3): invalid segment: Checksum error in segment payload [ 160.886735][ T6736] NILFS (loop3): trying rollback from an earlier position [pid 6734] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6732, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6733] <... creat resumed>) = 4 [pid 6733] unlink("./bus" [pid 4995] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6731] +++ exited with 0 +++ [pid 4995] <... openat resumed>) = 3 [pid 4995] fstat(3, [pid 6733] <... unlink resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6733] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6731, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4995] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4995] unlink("./141/binderfs") = 0 [pid 4995] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6734] <... pwritev2 resumed>) = 65007 [pid 4997] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6734] exit_group(0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6734] <... exit_group resumed>) = ? [pid 4997] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6733] <... pwritev2 resumed>) = 65007 [ 160.913382][ T6735] NILFS (loop1): recovery complete [ 160.932275][ T6736] NILFS (loop3): recovery complete [pid 6733] exit_group(0 [pid 4997] <... openat resumed>) = 3 [pid 6734] +++ exited with 0 +++ [pid 6736] <... mount resumed>) = 0 [pid 6733] <... exit_group resumed>) = ? [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./144/binderfs") = 0 [pid 6736] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6734, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 6736] <... openat resumed>) = 3 [pid 6736] chdir("./file0") = 0 [pid 6735] <... mount resumed>) = 0 [pid 6736] ioctl(4, LOOP_CLR_FD) = 0 [pid 6735] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6736] close(4 [pid 4998] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6736] <... close resumed>) = 0 [pid 6736] creat("./bus", 000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6735] <... openat resumed>) = 3 [pid 6735] chdir("./file0") = 0 [pid 6735] ioctl(4, LOOP_CLR_FD) = 0 [pid 6735] close(4 [pid 4998] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6735] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 6735] creat("./bus", 000 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 6735] <... creat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6735] unlink("./bus" [pid 4998] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./144/binderfs", [pid 6735] <... unlink resumed>) = 0 [pid 6735] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./144/binderfs" [pid 6733] +++ exited with 0 +++ [pid 4998] <... unlink resumed>) = 0 [pid 4998] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6733, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4993] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6736] <... creat resumed>) = 4 [pid 6736] unlink("./bus" [pid 4993] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6736] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6736] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] lstat("./144/binderfs", [pid 6735] <... pwritev2 resumed>) = 65007 [pid 6735] exit_group(0) = ? [ 160.963771][ T6741] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 160.979230][ T6742] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./144/binderfs") = 0 [pid 4993] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4997] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./144/file0", [pid 4995] lstat("./141/file0", [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6736] <... pwritev2 resumed>) = 65007 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6736] exit_group(0 [pid 4997] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6736] <... exit_group resumed>) = ? [pid 4997] <... openat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4997] getdents64(4, [pid 4995] fstat(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4995] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 4997] rmdir("./144/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6735] +++ exited with 0 +++ [pid 4997] <... rmdir resumed>) = 0 [pid 4995] close(4 [pid 4997] getdents64(3, [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6735, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6736] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 4997] close(3 [pid 4995] rmdir("./141/file0" [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4998] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6736, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4995] <... rmdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] rmdir("./144" [pid 4995] getdents64(3, [pid 4993] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./144/file0", [pid 4994] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... rmdir resumed>) = 0 [pid 4996] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] mkdir("./145", 0777 [pid 4995] close(3 [pid 4994] fstat(3, [pid 4998] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 4995] rmdir("./141" [pid 4994] getdents64(3, [pid 4998] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] lstat("./144/file0", [pid 4998] <... openat resumed>) = 4 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(4, [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] getdents64(3, [pid 4995] mkdir("./142", 0777 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] close(3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] lstat("./143/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4996] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... mkdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./143/binderfs" [pid 4993] <... openat resumed>) = 4 [pid 4996] lstat("./144/binderfs", [pid 4994] <... unlink resumed>) = 0 [pid 4993] fstat(4, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] unlink("./144/binderfs" [pid 4993] getdents64(4, [pid 4996] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4998] getdents64(4, [pid 4995] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./144/file0" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./144") = 0 [pid 4993] mkdir("./145", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6743 ./strace-static-x86_64: Process 6743 attached [pid 6743] chdir("./145") = 0 [pid 6743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6743] setpgid(0, 0) = 0 [pid 6743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6743] write(3, "1000", 4) = 4 [pid 6743] close(3) = 0 [pid 6743] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4998] close(4 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6743] memfd_create("syzkaller", 0) = 3 [pid 6743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4998] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] rmdir("./144/file0" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6744 [pid 4995] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6745 [pid 4998] rmdir("./144") = 0 [pid 4998] mkdir("./145", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 6745 attached ) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 6744 attached [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6744] chdir("./145") = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6746 [pid 6744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6744] setpgid(0, 0) = 0 [pid 6744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6745] chdir("./142"./strace-static-x86_64: Process 6746 attached ) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6744] <... openat resumed>) = 3 [pid 6745] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6744] write(3, "1000", 4) = 4 [pid 6744] close(3 [pid 6745] <... prctl resumed>) = 0 [pid 6744] <... close resumed>) = 0 [pid 6744] symlink("/dev/binderfs", "./binderfs" [pid 6745] setpgid(0, 0 [pid 6746] chdir("./145" [pid 6745] <... setpgid resumed>) = 0 [pid 6744] <... symlink resumed>) = 0 [pid 6746] <... chdir resumed>) = 0 [pid 6745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6744] memfd_create("syzkaller", 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6744] <... memfd_create resumed>) = 3 [pid 6744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6745] <... openat resumed>) = 3 [pid 6746] setpgid(0, 0 [pid 6745] write(3, "1000", 4 [pid 6746] <... setpgid resumed>) = 0 [pid 6745] <... write resumed>) = 4 [pid 4994] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6745] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6746] <... openat resumed>) = 3 [pid 6745] <... close resumed>) = 0 [pid 4994] lstat("./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6745] symlink("/dev/binderfs", "./binderfs" [pid 4994] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6746] write(3, "1000", 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6745] <... symlink resumed>) = 0 [pid 6746] <... write resumed>) = 4 [pid 4994] <... openat resumed>) = 4 [pid 6746] close(3 [pid 6745] memfd_create("syzkaller", 0 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4996] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./143/file0" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6746] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6746] symlink("/dev/binderfs", "./binderfs" [pid 6745] <... memfd_create resumed>) = 3 [pid 4996] lstat("./144/file0", [pid 4994] getdents64(3, [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] rmdir("./143" [pid 4996] <... openat resumed>) = 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] fstat(4, [pid 4994] mkdir("./144", 0777 [pid 6746] <... symlink resumed>) = 0 [pid 6745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6746] memfd_create("syzkaller", 0 [pid 4996] getdents64(4, [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6746] <... memfd_create resumed>) = 3 [pid 6745] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... openat resumed>) = 3 [pid 6746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] close(4) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6746] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] rmdir("./144/file0" [pid 4994] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6747 [pid 4996] rmdir("./144") = 0 [pid 4996] mkdir("./145", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 6744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... close resumed>) = 0 ./strace-static-x86_64: Process 6747 attached [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6747] chdir("./144" [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6748 [pid 6747] <... chdir resumed>) = 0 [pid 6747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6747] setpgid(0, 0) = 0 [pid 6747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 6748 attached [pid 6747] write(3, "1000", 4 [pid 6748] chdir("./145" [pid 6747] <... write resumed>) = 4 [pid 6748] <... chdir resumed>) = 0 [pid 6747] close(3 [pid 6748] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6747] <... close resumed>) = 0 [pid 6748] <... prctl resumed>) = 0 [pid 6747] symlink("/dev/binderfs", "./binderfs" [pid 6748] setpgid(0, 0 [pid 6747] <... symlink resumed>) = 0 [pid 6745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6748] <... setpgid resumed>) = 0 [pid 6747] memfd_create("syzkaller", 0 [pid 6748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6747] <... memfd_create resumed>) = 3 [pid 6748] <... openat resumed>) = 3 [pid 6747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6748] write(3, "1000", 4 [pid 6747] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6748] <... write resumed>) = 4 [pid 6746] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6748] close(3) = 0 [pid 6748] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6748] memfd_create("syzkaller", 0) = 3 [pid 6748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6744] <... write resumed>) = 2097152 [pid 6743] <... write resumed>) = 2097152 [pid 6743] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6743] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6743] <... openat resumed>) = 4 [pid 6743] ioctl(4, LOOP_SET_FD, 3 [pid 6748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6744] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6744] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6744] ioctl(4, LOOP_SET_FD, 3 [pid 6743] <... ioctl resumed>) = 0 [pid 6743] close(3) = 0 [pid 6743] mkdir("./file0", 0777) = 0 [pid 6743] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6744] <... ioctl resumed>) = 0 [pid 6744] close(3) = 0 [pid 6744] mkdir("./file0", 0777 [pid 6746] <... write resumed>) = 2097152 [pid 6744] <... mkdir resumed>) = 0 [pid 6744] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6746] munmap(0x7f46b9f9b000, 2097152 [pid 6745] <... write resumed>) = 2097152 [ 161.332553][ T6743] loop0: detected capacity change from 0 to 4096 [ 161.349695][ T6744] loop4: detected capacity change from 0 to 4096 [pid 6748] <... write resumed>) = 2097152 [pid 6747] <... write resumed>) = 2097152 [pid 6746] <... munmap resumed>) = 0 [pid 6745] munmap(0x7f46b9f9b000, 2097152 [pid 6748] munmap(0x7f46b9f9b000, 2097152 [pid 6747] munmap(0x7f46b9f9b000, 2097152 [pid 6746] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6745] <... munmap resumed>) = 0 [pid 6746] <... openat resumed>) = 4 [pid 6745] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6746] ioctl(4, LOOP_SET_FD, 3 [pid 6745] <... openat resumed>) = 4 [pid 6748] <... munmap resumed>) = 0 [pid 6747] <... munmap resumed>) = 0 [pid 6746] <... ioctl resumed>) = 0 [pid 6745] ioctl(4, LOOP_SET_FD, 3 [pid 6748] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6747] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6746] close(3 [pid 6748] <... openat resumed>) = 4 [pid 6747] <... openat resumed>) = 4 [pid 6746] <... close resumed>) = 0 [ 161.385457][ T6743] NILFS (loop0): invalid segment: Checksum error in segment payload [ 161.393586][ T6743] NILFS (loop0): trying rollback from an earlier position [ 161.406512][ T6746] loop5: detected capacity change from 0 to 4096 [ 161.412344][ T6744] NILFS (loop4): invalid segment: Checksum error in segment payload [ 161.419877][ T6745] loop2: detected capacity change from 0 to 4096 [ 161.423892][ T6743] NILFS (loop0): recovery complete [pid 6748] ioctl(4, LOOP_SET_FD, 3 [pid 6747] ioctl(4, LOOP_SET_FD, 3 [pid 6746] mkdir("./file0", 0777) = 0 [pid 6745] <... ioctl resumed>) = 0 [pid 6748] <... ioctl resumed>) = 0 [pid 6746] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6745] close(3 [pid 6748] close(3 [pid 6747] <... ioctl resumed>) = 0 [pid 6748] <... close resumed>) = 0 [pid 6748] mkdir("./file0", 0777 [pid 6747] close(3 [pid 6748] <... mkdir resumed>) = 0 [pid 6747] <... close resumed>) = 0 [pid 6745] <... close resumed>) = 0 [pid 6748] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6747] mkdir("./file0", 0777 [pid 6745] mkdir("./file0", 0777 [pid 6747] <... mkdir resumed>) = 0 [pid 6745] <... mkdir resumed>) = 0 [pid 6747] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6743] <... mount resumed>) = 0 [ 161.432581][ T6748] loop3: detected capacity change from 0 to 4096 [ 161.432977][ T6744] NILFS (loop4): trying rollback from an earlier position [ 161.439990][ T6747] loop1: detected capacity change from 0 to 4096 [ 161.456422][ T6744] NILFS (loop4): recovery complete [ 161.467642][ T6749] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6743] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6745] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6743] <... openat resumed>) = 3 [pid 6743] chdir("./file0") = 0 [ 161.470057][ T6746] NILFS (loop5): invalid segment: Checksum error in segment payload [ 161.490308][ T6750] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.494329][ T6747] NILFS (loop1): invalid segment: Checksum error in segment payload [ 161.503782][ T6746] NILFS (loop5): trying rollback from an earlier position [ 161.510876][ T6748] NILFS (loop3): invalid segment: Checksum error in segment payload [ 161.516612][ T6745] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6743] ioctl(4, LOOP_CLR_FD) = 0 [pid 6744] <... mount resumed>) = 0 [pid 6743] close(4 [pid 6744] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6743] <... close resumed>) = 0 [pid 6744] <... openat resumed>) = 3 [pid 6743] creat("./bus", 000 [pid 6744] chdir("./file0") = 0 [pid 6744] ioctl(4, LOOP_CLR_FD) = 0 [pid 6744] close(4) = 0 [pid 6744] creat("./bus", 000 [pid 6743] <... creat resumed>) = 4 [pid 6743] unlink("./bus" [pid 6744] <... creat resumed>) = 4 [pid 6743] <... unlink resumed>) = 0 [pid 6744] unlink("./bus" [ 161.524844][ T6748] NILFS (loop3): trying rollback from an earlier position [ 161.536278][ T6745] NILFS (loop2): trying rollback from an earlier position [ 161.540516][ T6747] NILFS (loop1): trying rollback from an earlier position [ 161.568425][ T6745] NILFS (loop2): recovery complete [ 161.569879][ T6748] NILFS (loop3): recovery complete [ 161.573942][ T6746] NILFS (loop5): recovery complete [pid 6743] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6744] <... unlink resumed>) = 0 [pid 6744] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6745] <... mount resumed>) = 0 [pid 6745] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6745] chdir("./file0") = 0 [pid 6745] ioctl(4, LOOP_CLR_FD) = 0 [pid 6745] close(4) = 0 [pid 6743] <... pwritev2 resumed>) = 65007 [pid 6745] creat("./bus", 000 [pid 6743] exit_group(0) = ? [pid 6747] <... mount resumed>) = 0 [ 161.586382][ T6751] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.602667][ T6747] NILFS (loop1): recovery complete [pid 6747] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6744] <... pwritev2 resumed>) = 65007 [pid 6743] +++ exited with 0 +++ [pid 6748] <... mount resumed>) = 0 [pid 6747] chdir("./file0" [pid 6746] <... mount resumed>) = 0 [pid 6745] <... creat resumed>) = 4 [pid 6744] exit_group(0 [pid 6748] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6747] <... chdir resumed>) = 0 [pid 6746] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6745] unlink("./bus" [pid 6744] <... exit_group resumed>) = ? [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6743, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6748] <... openat resumed>) = 3 [pid 6747] ioctl(4, LOOP_CLR_FD [pid 6746] <... openat resumed>) = 3 [pid 4993] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6747] <... ioctl resumed>) = 0 [pid 6748] chdir("./file0" [pid 6747] close(4 [pid 6746] chdir("./file0" [pid 6745] <... unlink resumed>) = 0 [pid 6744] +++ exited with 0 +++ [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6748] <... chdir resumed>) = 0 [pid 6747] <... close resumed>) = 0 [pid 6746] <... chdir resumed>) = 0 [pid 6745] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6744, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6748] ioctl(4, LOOP_CLR_FD [pid 6747] creat("./bus", 000 [pid 6746] ioctl(4, LOOP_CLR_FD [pid 4993] <... openat resumed>) = 3 [pid 6748] <... ioctl resumed>) = 0 [pid 6746] <... ioctl resumed>) = 0 [pid 4993] fstat(3, [pid 6748] close(4 [pid 6746] close(4 [pid 4997] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6748] <... close resumed>) = 0 [pid 6746] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(3, [pid 6748] creat("./bus", 000 [pid 6746] creat("./bus", 000 [pid 4997] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... openat resumed>) = 3 [pid 4993] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./145/binderfs", [pid 4997] getdents64(3, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] unlink("./145/binderfs" [pid 4997] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] lstat("./145/binderfs", [pid 6748] <... creat resumed>) = 4 [pid 6747] <... creat resumed>) = 4 [pid 6746] <... creat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6748] unlink("./bus" [pid 6747] unlink("./bus" [pid 6746] unlink("./bus" [pid 4997] unlink("./145/binderfs") = 0 [ 161.630229][ T6752] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.633928][ T6753] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 161.653935][ T6754] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6746] <... unlink resumed>) = 0 [pid 6748] <... unlink resumed>) = 0 [pid 6747] <... unlink resumed>) = 0 [pid 6746] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6748] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6747] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./145/file0" [pid 6745] <... pwritev2 resumed>) = 65007 [pid 4993] <... rmdir resumed>) = 0 [pid 6745] exit_group(0) = ? [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./145") = 0 [pid 4993] mkdir("./146", 0777 [pid 6747] <... pwritev2 resumed>) = 65007 [pid 6746] <... pwritev2 resumed>) = 65007 [pid 6747] exit_group(0 [pid 6746] exit_group(0 [pid 4993] <... mkdir resumed>) = 0 [pid 6747] <... exit_group resumed>) = ? [pid 6746] <... exit_group resumed>) = ? [pid 6748] <... pwritev2 resumed>) = 65007 [pid 4997] <... umount2 resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 6748] exit_group(0) = ? [pid 4997] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6755 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, ./strace-static-x86_64: Process 6755 attached [pid 6755] chdir("./146" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6755] <... chdir resumed>) = 0 [pid 6748] +++ exited with 0 +++ [pid 6745] +++ exited with 0 +++ [pid 4997] getdents64(4, [pid 6755] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6746] +++ exited with 0 +++ [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6748, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6745, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6755] <... prctl resumed>) = 0 [pid 6747] +++ exited with 0 +++ [pid 4997] close(4 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 6755] setpgid(0, 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6746, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 4997] <... close resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 6755] <... setpgid resumed>) = 0 [pid 4998] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] rmdir("./145/file0" [pid 6755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6747, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6755] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(3, [pid 4996] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6755] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6755] <... write resumed>) = 4 [pid 4998] fstat(3, [pid 4997] close(3 [pid 4996] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6755] close(3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 6755] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] rmdir("./145" [pid 4996] fstat(3, [pid 4995] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 6755] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6755] <... symlink resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6755] memfd_create("syzkaller", 0 [pid 4995] getdents64(3, [pid 6755] <... memfd_create resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4995] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 6755] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] mkdir("./146", 0777 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] lstat("./145/binderfs", [pid 4997] <... mkdir resumed>) = 0 [pid 4996] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./142/binderfs", [pid 4994] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] unlink("./142/binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] unlink("./145/binderfs" [pid 4997] <... openat resumed>) = 3 [pid 4996] lstat("./145/binderfs", [pid 4995] <... unlink resumed>) = 0 [pid 4995] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] unlink("./145/binderfs" [pid 4994] unlink("./144/binderfs" [pid 4998] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4997] close(3) = 0 [pid 4996] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6755] <... write resumed>) = 2097152 [pid 6755] munmap(0x7f46b9f9b000, 2097152) = 0 ./strace-static-x86_64: Process 6756 attached [pid 6756] chdir("./146") = 0 [pid 6756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6756] setpgid(0, 0) = 0 [pid 6755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6756 [pid 6755] ioctl(4, LOOP_SET_FD, 3 [pid 6756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6756] write(3, "1000", 4) = 4 [pid 6756] close(3) = 0 [pid 6756] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6756] memfd_create("syzkaller", 0) = 3 [pid 6756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(4 [pid 4994] lstat("./144/file0", [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./145/file0", [pid 6755] <... ioctl resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] rmdir("./145/file0" [pid 4994] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6755] close(3 [pid 4998] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6755] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6755] mkdir("./file0", 0777 [pid 4998] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, [pid 4995] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [ 161.912269][ T6755] loop0: detected capacity change from 0 to 4096 [pid 6755] <... mkdir resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] fstat(4, [pid 6755] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] fstat(4, [pid 4995] lstat("./142/file0", [pid 4996] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4998] getdents64(4, [pid 4996] rmdir("./145" [pid 4995] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] mkdir("./146", 0777 [pid 4995] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4995] fstat(4, [pid 4998] <... close resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(4 [pid 4998] rmdir("./145/file0" [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] getdents64(4, [pid 4994] <... close resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] rmdir("./144/file0" [pid 4998] getdents64(3, [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4996] close(3 [pid 4995] close(4 [pid 4994] getdents64(3, [pid 6756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] rmdir("./145" [pid 4995] rmdir("./142/file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] mkdir("./146", 0777 [pid 4995] getdents64(3, [pid 4998] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] close(3 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] rmdir("./142" [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4995] mkdir("./143", 0777 [pid 4998] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... mkdir resumed>) = 0 [pid 4994] close(3 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4994] <... close resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6757 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6758 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4994] rmdir("./144" [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6759 [pid 4994] mkdir("./145", 0777./strace-static-x86_64: Process 6758 attached [pid 6758] chdir("./146" [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6758] <... chdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6759 attached ./strace-static-x86_64: Process 6757 attached [pid 6758] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6759] chdir("./143" [pid 6758] <... prctl resumed>) = 0 [pid 6757] chdir("./146" [pid 6759] <... chdir resumed>) = 0 [pid 6758] setpgid(0, 0 [pid 6757] <... chdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6759] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6758] <... setpgid resumed>) = 0 [pid 6757] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] close(3 [pid 6759] <... prctl resumed>) = 0 [pid 6758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6757] <... prctl resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6759] setpgid(0, 0 [pid 6758] <... openat resumed>) = 3 [pid 6757] setpgid(0, 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6759] <... setpgid resumed>) = 0 [pid 6758] write(3, "1000", 4 [pid 6757] <... setpgid resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6760 [pid 6759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6758] <... write resumed>) = 4 [pid 6757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6759] <... openat resumed>) = 3 [pid 6758] close(3 [pid 6757] <... openat resumed>) = 3 [pid 6759] write(3, "1000", 4 [pid 6758] <... close resumed>) = 0 [pid 6757] write(3, "1000", 4 [pid 6759] <... write resumed>) = 4 [ 161.994576][ T6755] NILFS (loop0): invalid segment: Checksum error in segment payload [ 162.002959][ T6755] NILFS (loop0): trying rollback from an earlier position [pid 6758] symlink("/dev/binderfs", "./binderfs" [pid 6757] <... write resumed>) = 4 [pid 6759] close(3 [pid 6758] <... symlink resumed>) = 0 [pid 6757] close(3 [pid 6759] <... close resumed>) = 0 [pid 6758] memfd_create("syzkaller", 0 [pid 6757] <... close resumed>) = 0 [pid 6759] symlink("/dev/binderfs", "./binderfs" [pid 6758] <... memfd_create resumed>) = 3 [pid 6757] symlink("/dev/binderfs", "./binderfs" [pid 6759] <... symlink resumed>) = 0 [pid 6758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6757] <... symlink resumed>) = 0 [pid 6759] memfd_create("syzkaller", 0 [pid 6758] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6757] memfd_create("syzkaller", 0 [pid 6759] <... memfd_create resumed>) = 3 [pid 6757] <... memfd_create resumed>) = 3 [pid 6756] <... write resumed>) = 2097152 [pid 6759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6759] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6757] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6756] munmap(0x7f46b9f9b000, 2097152 [pid 6755] <... mount resumed>) = 0 [pid 6756] <... munmap resumed>) = 0 [pid 6755] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6756] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6755] chdir("./file0" [pid 6756] ioctl(4, LOOP_SET_FD, 3 [pid 6755] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 6760 attached [pid 6760] chdir("./145") = 0 [pid 6760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6760] setpgid(0, 0) = 0 [pid 6760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6760] write(3, "1000", 4) = 4 [pid 6760] close(3) = 0 [pid 6760] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6756] <... ioctl resumed>) = 0 [pid 6755] ioctl(4, LOOP_CLR_FD [pid 6760] memfd_create("syzkaller", 0 [pid 6755] <... ioctl resumed>) = 0 [pid 6760] <... memfd_create resumed>) = 3 [pid 6755] close(4 [pid 6760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6755] <... close resumed>) = 0 [pid 6756] close(3 [pid 6755] creat("./bus", 000 [pid 6756] <... close resumed>) = 0 [pid 6756] mkdir("./file0", 0777) = 0 [pid 6755] <... creat resumed>) = 4 [pid 6756] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6755] unlink("./bus") = 0 [pid 6759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6755] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 162.055222][ T6755] NILFS (loop0): recovery complete [ 162.065567][ T6761] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.095282][ T6756] loop4: detected capacity change from 0 to 4096 [pid 6757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6755] <... pwritev2 resumed>) = 65007 [pid 6755] exit_group(0) = ? [pid 6758] <... write resumed>) = 2097152 [ 162.141510][ T6756] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6757] <... write resumed>) = 2097152 [pid 6755] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6755, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4993] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./146/binderfs") = 0 [pid 4993] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6757] munmap(0x7f46b9f9b000, 2097152 [pid 6758] munmap(0x7f46b9f9b000, 2097152 [pid 6759] <... write resumed>) = 2097152 [pid 6759] munmap(0x7f46b9f9b000, 2097152 [pid 6758] <... munmap resumed>) = 0 [pid 6758] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6759] <... munmap resumed>) = 0 [pid 6758] ioctl(4, LOOP_SET_FD, 3 [pid 6757] <... munmap resumed>) = 0 [pid 6757] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6757] ioctl(4, LOOP_SET_FD, 3 [pid 6759] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 162.182069][ T6756] NILFS (loop4): trying rollback from an earlier position [ 162.201534][ T6756] NILFS (loop4): recovery complete [ 162.212460][ T6762] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.218788][ T6757] loop5: detected capacity change from 0 to 4096 [pid 6759] ioctl(4, LOOP_SET_FD, 3 [pid 6758] <... ioctl resumed>) = 0 [pid 6756] <... mount resumed>) = 0 [pid 6760] <... write resumed>) = 2097152 [pid 6758] close(3 [pid 6757] <... ioctl resumed>) = 0 [pid 6756] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6760] munmap(0x7f46b9f9b000, 2097152 [pid 6758] <... close resumed>) = 0 [pid 6757] close(3 [pid 6756] <... openat resumed>) = 3 [pid 6760] <... munmap resumed>) = 0 [pid 6758] mkdir("./file0", 0777 [pid 6757] <... close resumed>) = 0 [pid 6756] chdir("./file0" [pid 6760] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6758] <... mkdir resumed>) = 0 [pid 6757] mkdir("./file0", 0777 [pid 6756] <... chdir resumed>) = 0 [pid 6760] <... openat resumed>) = 4 [pid 6758] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6757] <... mkdir resumed>) = 0 [pid 6756] ioctl(4, LOOP_CLR_FD [pid 6760] ioctl(4, LOOP_SET_FD, 3 [pid 6757] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6756] <... ioctl resumed>) = 0 [pid 6759] <... ioctl resumed>) = 0 [pid 6756] close(4) = 0 [pid 6760] <... ioctl resumed>) = 0 [pid 6756] creat("./bus", 000 [pid 6760] close(3 [pid 6756] <... creat resumed>) = 4 [pid 6760] <... close resumed>) = 0 [pid 6756] unlink("./bus" [pid 6760] mkdir("./file0", 0777 [pid 6756] <... unlink resumed>) = 0 [pid 6760] <... mkdir resumed>) = 0 [ 162.223619][ T6758] loop3: detected capacity change from 0 to 4096 [ 162.232740][ T6759] loop2: detected capacity change from 0 to 4096 [ 162.251528][ T6760] loop1: detected capacity change from 0 to 4096 [ 162.261258][ T6758] NILFS (loop3): invalid segment: Checksum error in segment payload [ 162.274362][ T6757] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6756] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6760] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6759] close(3 [pid 6756] <... pwritev2 resumed>) = 65007 [pid 6756] exit_group(0) = ? [pid 6759] <... close resumed>) = 0 [pid 6759] mkdir("./file0", 0777 [pid 4993] <... umount2 resumed>) = 0 [pid 6759] <... mkdir resumed>) = 0 [pid 4993] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 162.292690][ T6757] NILFS (loop5): trying rollback from an earlier position [ 162.308218][ T6758] NILFS (loop3): trying rollback from an earlier position [ 162.314089][ T6757] NILFS (loop5): recovery complete [ 162.324731][ T6758] NILFS (loop3): recovery complete [ 162.331748][ T6760] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6759] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6756] +++ exited with 0 +++ [pid 4993] lstat("./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6756, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 4 [pid 4997] <... openat resumed>) = 3 [pid 4993] fstat(4, [pid 6757] <... mount resumed>) = 0 [pid 4997] fstat(3, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4997] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] getdents64(4, [pid 4997] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(4 [pid 4997] lstat("./146/binderfs", [pid 4993] <... close resumed>) = 0 [pid 6757] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] rmdir("./146/file0" [pid 6757] <... openat resumed>) = 3 [pid 4997] unlink("./146/binderfs" [pid 4993] <... rmdir resumed>) = 0 [pid 6757] chdir("./file0" [pid 4997] <... unlink resumed>) = 0 [pid 4993] getdents64(3, [pid 6757] <... chdir resumed>) = 0 [pid 4997] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6757] ioctl(4, LOOP_CLR_FD [pid 4993] close(3 [pid 6758] <... mount resumed>) = 0 [pid 6757] <... ioctl resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6758] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [ 162.336468][ T6759] NILFS (loop2): invalid segment: Checksum error in segment payload [ 162.340376][ T6760] NILFS (loop1): trying rollback from an earlier position [ 162.358015][ T6764] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.378321][ T6763] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6757] close(4 [pid 4993] rmdir("./146" [pid 6758] <... openat resumed>) = 3 [pid 6757] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6758] chdir("./file0" [pid 6757] creat("./bus", 000 [pid 4993] mkdir("./147", 0777 [pid 6758] <... chdir resumed>) = 0 [pid 6757] <... creat resumed>) = 4 [pid 4993] <... mkdir resumed>) = 0 [pid 6758] ioctl(4, LOOP_CLR_FD [pid 6757] unlink("./bus" [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6758] <... ioctl resumed>) = 0 [pid 6757] <... unlink resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 6758] close(4 [pid 6757] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... close resumed>) = 0 [pid 6758] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6758] creat("./bus", 000 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6766 ./strace-static-x86_64: Process 6766 attached [pid 6766] chdir("./147") = 0 [pid 6766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6766] setpgid(0, 0) = 0 [pid 6766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6766] write(3, "1000", 4) = 4 [pid 6766] close(3) = 0 [pid 6760] <... mount resumed>) = 0 [ 162.392026][ T6760] NILFS (loop1): recovery complete [ 162.412752][ T6759] NILFS (loop2): trying rollback from an earlier position [pid 6766] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6766] memfd_create("syzkaller", 0) = 3 [pid 6760] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6760] <... openat resumed>) = 3 [pid 6757] <... pwritev2 resumed>) = 65007 [pid 6766] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6760] chdir("./file0" [pid 6757] exit_group(0 [pid 6760] <... chdir resumed>) = 0 [pid 6757] <... exit_group resumed>) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 6760] ioctl(4, LOOP_CLR_FD) = 0 [pid 4997] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6760] close(4 [pid 6758] <... creat resumed>) = 4 [pid 6757] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6760] <... close resumed>) = 0 [pid 6758] unlink("./bus" [pid 4997] lstat("./146/file0", [pid 6760] creat("./bus", 000 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6757, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, [pid 6758] <... unlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6760] <... creat resumed>) = 4 [pid 6758] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] getdents64(3, [pid 4997] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6760] unlink("./bus" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./146/binderfs", [pid 4997] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... openat resumed>) = 4 [pid 6760] <... unlink resumed>) = 0 [pid 6760] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] unlink("./146/binderfs" [pid 4997] fstat(4, [pid 4998] <... unlink resumed>) = 0 [pid 4998] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [ 162.441379][ T6765] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.477750][ T6759] NILFS (loop2): recovery complete [pid 4997] close(4 [pid 6766] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6760] <... pwritev2 resumed>) = 65007 [pid 4997] <... close resumed>) = 0 [pid 6760] exit_group(0 [pid 4997] rmdir("./146/file0" [pid 6760] <... exit_group resumed>) = ? [pid 4997] <... rmdir resumed>) = 0 [pid 6758] <... pwritev2 resumed>) = 65007 [pid 6758] exit_group(0) = ? [pid 6766] <... write resumed>) = 2097152 [pid 6760] +++ exited with 0 +++ [pid 6759] <... mount resumed>) = 0 [pid 4997] getdents64(3, [pid 6759] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6760, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6759] <... openat resumed>) = 3 [pid 4997] close(3 [pid 6759] chdir("./file0" [pid 4997] <... close resumed>) = 0 [pid 6759] <... chdir resumed>) = 0 [pid 4997] rmdir("./146" [pid 6759] ioctl(4, LOOP_CLR_FD [pid 4994] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6759] <... ioctl resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6759] close(4 [pid 4997] mkdir("./147", 0777 [pid 4994] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6759] <... close resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6759] creat("./bus", 000 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] <... umount2 resumed>) = 0 [pid 4994] fstat(3, [pid 4997] <... openat resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] lstat("./146/file0", [pid 4997] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./145/binderfs", [pid 4998] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6768 [pid 4998] <... openat resumed>) = 4 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6758] +++ exited with 0 +++ [pid 4998] fstat(4, [pid 4994] unlink("./145/binderfs" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6758, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] <... unlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4994] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... restart_syscall resumed>) = 0 [ 162.542971][ T6767] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ./strace-static-x86_64: Process 6768 attached [pid 6766] munmap(0x7f46b9f9b000, 2097152 [pid 4998] getdents64(4, [pid 6768] chdir("./147" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6766] <... munmap resumed>) = 0 [pid 4998] close(4 [pid 6768] <... chdir resumed>) = 0 [pid 6766] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... close resumed>) = 0 [pid 4996] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6768] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6766] <... openat resumed>) = 4 [pid 6759] <... creat resumed>) = 4 [pid 4998] rmdir("./146/file0" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6768] <... prctl resumed>) = 0 [pid 6766] ioctl(4, LOOP_SET_FD, 3 [pid 6759] unlink("./bus" [pid 4998] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6768] setpgid(0, 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./146") = 0 [pid 4998] mkdir("./147", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 6768] <... setpgid resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] fstat(3, [pid 6768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6759] <... unlink resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6768] <... openat resumed>) = 3 [pid 6759] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6769 [pid 4996] getdents64(3, [pid 4994] <... umount2 resumed>) = 0 [pid 6768] write(3, "1000", 4./strace-static-x86_64: Process 6769 attached [pid 6769] chdir("./147") = 0 [pid 6769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6769] setpgid(0, 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6769] <... setpgid resumed>) = 0 [pid 6768] <... write resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] lstat("./145/file0", [pid 6769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6768] close(3 [pid 4996] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6769] <... openat resumed>) = 3 [pid 6768] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6769] write(3, "1000", 4 [pid 6768] symlink("/dev/binderfs", "./binderfs" [pid 4996] lstat("./146/binderfs", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6769] <... write resumed>) = 4 [pid 6768] <... symlink resumed>) = 0 [pid 6766] <... ioctl resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6769] close(3 [pid 6768] memfd_create("syzkaller", 0 [pid 6766] close(3 [pid 4996] unlink("./146/binderfs" [pid 4994] <... openat resumed>) = 4 [pid 6769] <... close resumed>) = 0 [pid 6768] <... memfd_create resumed>) = 3 [pid 6766] <... close resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4994] fstat(4, [pid 6769] symlink("/dev/binderfs", "./binderfs" [pid 6768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6766] mkdir("./file0", 0777 [pid 6759] <... pwritev2 resumed>) = 65007 [pid 4996] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6769] <... symlink resumed>) = 0 [pid 6768] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6766] <... mkdir resumed>) = 0 [pid 6759] exit_group(0 [pid 4994] getdents64(4, [pid 6769] memfd_create("syzkaller", 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6769] <... memfd_create resumed>) = 3 [pid 4994] getdents64(4, [pid 6769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6769] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] close(4 [pid 6768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6766] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6759] <... exit_group resumed>) = ? [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./145/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [ 162.620452][ T6766] loop0: detected capacity change from 0 to 4096 [pid 4994] rmdir("./145") = 0 [pid 4994] mkdir("./146", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6770 ./strace-static-x86_64: Process 6770 attached [pid 6770] chdir("./146") = 0 [pid 6770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6770] setpgid(0, 0) = 0 [pid 6770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6770] write(3, "1000", 4 [pid 6769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6770] <... write resumed>) = 4 [pid 6770] close(3) = 0 [pid 6770] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6770] memfd_create("syzkaller", 0) = 3 [pid 6770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... umount2 resumed>) = 0 [pid 6759] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6759, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./146/file0", [pid 4995] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./143/binderfs" [pid 4996] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... unlink resumed>) = 0 [pid 6770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./146/file0" [pid 6769] <... write resumed>) = 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./146") = 0 [pid 6768] <... write resumed>) = 2097152 [pid 4996] mkdir("./147", 0777 [pid 6768] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6768] <... munmap resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6769] munmap(0x7f46b9f9b000, 2097152 [ 162.721624][ T6766] NILFS (loop0): invalid segment: Checksum error in segment payload [ 162.743185][ T6766] NILFS (loop0): trying rollback from an earlier position [pid 6768] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] close(3 [pid 6770] <... write resumed>) = 2097152 [pid 6769] <... munmap resumed>) = 0 [pid 6768] <... openat resumed>) = 4 [pid 6766] <... mount resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6769] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6769] ioctl(4, LOOP_SET_FD, 3 [pid 6770] munmap(0x7f46b9f9b000, 2097152 [pid 6768] ioctl(4, LOOP_SET_FD, 3 [pid 6766] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6769] <... ioctl resumed>) = 0 [pid 6769] close(3) = 0 [pid 6769] mkdir("./file0", 0777) = 0 [pid 6769] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6766] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6772 attached [pid 6770] <... munmap resumed>) = 0 [pid 6768] <... ioctl resumed>) = 0 [pid 6766] chdir("./file0" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6772] chdir("./147" [pid 6770] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6768] close(3 [pid 6766] <... chdir resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6772 [pid 4995] lstat("./143/file0", [pid 6772] <... chdir resumed>) = 0 [pid 6770] <... openat resumed>) = 4 [pid 6768] <... close resumed>) = 0 [pid 6766] ioctl(4, LOOP_CLR_FD [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6772] prctl(PR_SET_PDEATHSIG, SIGKILL [ 162.798276][ T6766] NILFS (loop0): recovery complete [ 162.805836][ T6771] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.820286][ T6769] loop5: detected capacity change from 0 to 4096 [ 162.824760][ T6768] loop4: detected capacity change from 0 to 4096 [pid 6770] ioctl(4, LOOP_SET_FD, 3 [pid 6768] mkdir("./file0", 0777 [pid 6766] <... ioctl resumed>) = 0 [pid 4995] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6772] <... prctl resumed>) = 0 [pid 6770] <... ioctl resumed>) = 0 [pid 6768] <... mkdir resumed>) = 0 [pid 6766] close(4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6772] setpgid(0, 0 [pid 6768] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6766] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6772] <... setpgid resumed>) = 0 [pid 6770] close(3 [pid 6766] creat("./bus", 000 [pid 4995] <... openat resumed>) = 4 [pid 6772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] fstat(4, [pid 6772] <... openat resumed>) = 3 [pid 6770] <... close resumed>) = 0 [pid 6766] <... creat resumed>) = 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6772] write(3, "1000", 4 [pid 6766] unlink("./bus" [pid 4995] getdents64(4, [pid 6772] <... write resumed>) = 4 [pid 6770] mkdir("./file0", 0777 [pid 6766] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6772] close(3 [ 162.845318][ T6770] loop1: detected capacity change from 0 to 4096 [ 162.846269][ T6769] NILFS (loop5): invalid segment: Checksum error in segment payload [ 162.860555][ T6769] NILFS (loop5): trying rollback from an earlier position [ 162.867069][ T6768] NILFS (loop4): invalid segment: Checksum error in segment payload [ 162.879070][ T6768] NILFS (loop4): trying rollback from an earlier position [ 162.889506][ T6769] NILFS (loop5): recovery complete [pid 6766] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] getdents64(4, [pid 6772] <... close resumed>) = 0 [pid 6770] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6772] symlink("/dev/binderfs", "./binderfs" [pid 6766] <... pwritev2 resumed>) = 65007 [pid 4995] close(4 [pid 6772] <... symlink resumed>) = 0 [pid 6766] exit_group(0 [pid 4995] <... close resumed>) = 0 [pid 6772] memfd_create("syzkaller", 0 [pid 6766] <... exit_group resumed>) = ? [pid 4995] rmdir("./143/file0" [pid 6772] <... memfd_create resumed>) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 6772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6770] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] getdents64(3, [pid 6772] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6772] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6769] <... mount resumed>) = 0 [pid 6766] +++ exited with 0 +++ [pid 4995] close(3 [pid 6769] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6766, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6769] <... openat resumed>) = 3 [pid 6769] chdir("./file0") = 0 [pid 6769] ioctl(4, LOOP_CLR_FD) = 0 [pid 6769] close(4) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6769] creat("./bus", 000 [pid 4995] rmdir("./143" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6769] <... creat resumed>) = 4 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6769] unlink("./bus" [ 162.900843][ T6773] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.921115][ T6770] NILFS (loop1): invalid segment: Checksum error in segment payload [ 162.929566][ T6768] NILFS (loop4): recovery complete [ 162.931145][ T6770] NILFS (loop1): trying rollback from an earlier position [pid 4995] mkdir("./144", 0777 [pid 4993] <... openat resumed>) = 3 [pid 6769] <... unlink resumed>) = 0 [pid 6768] <... mount resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] fstat(3, [pid 6769] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6768] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6772] <... write resumed>) = 2097152 [pid 6768] <... openat resumed>) = 3 [pid 4993] getdents64(3, [pid 6768] chdir("./file0" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6768] <... chdir resumed>) = 0 [pid 4993] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6768] ioctl(4, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6768] <... ioctl resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4993] lstat("./147/binderfs", [pid 6768] close(4 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6768] <... close resumed>) = 0 [pid 4993] unlink("./147/binderfs" [pid 6768] creat("./bus", 000 [pid 4993] <... unlink resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 6769] <... pwritev2 resumed>) = 65007 [pid 6769] exit_group(0) = ? [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6775 [pid 6768] <... creat resumed>) = 4 [pid 6768] unlink("./bus") = 0 [pid 6768] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6769] +++ exited with 0 +++ ./strace-static-x86_64: Process 6775 attached [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6769, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6775] chdir("./144" [pid 6772] munmap(0x7f46b9f9b000, 2097152 [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6775] <... chdir resumed>) = 0 [pid 6775] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6772] <... munmap resumed>) = 0 [pid 4998] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6775] <... prctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6775] setpgid(0, 0 [pid 6772] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6775] <... setpgid resumed>) = 0 [pid 6772] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 6775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6772] ioctl(4, LOOP_SET_FD, 3 [ 162.962960][ T6774] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 162.983328][ T6770] NILFS (loop1): recovery complete [pid 4998] fstat(3, [pid 4993] <... umount2 resumed>) = 0 [pid 6775] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6775] write(3, "1000", 4 [pid 6770] <... mount resumed>) = 0 [pid 6768] <... pwritev2 resumed>) = 65007 [pid 4998] getdents64(3, [pid 4993] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6775] <... write resumed>) = 4 [pid 6770] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6768] exit_group(0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6775] close(3 [pid 6772] <... ioctl resumed>) = 0 [pid 6770] <... openat resumed>) = 3 [pid 6768] <... exit_group resumed>) = ? [pid 4998] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./147/file0", [pid 6775] <... close resumed>) = 0 [pid 6772] close(3 [pid 6770] chdir("./file0" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6775] symlink("/dev/binderfs", "./binderfs" [pid 6772] <... close resumed>) = 0 [pid 6770] <... chdir resumed>) = 0 [pid 4998] lstat("./147/binderfs", [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6775] <... symlink resumed>) = 0 [pid 6772] mkdir("./file0", 0777 [pid 6770] ioctl(4, LOOP_CLR_FD [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6775] memfd_create("syzkaller", 0 [pid 6772] <... mkdir resumed>) = 0 [pid 6770] <... ioctl resumed>) = 0 [pid 4998] unlink("./147/binderfs" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6775] <... memfd_create resumed>) = 3 [pid 6772] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6770] close(4 [pid 4998] <... unlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6770] <... close resumed>) = 0 [pid 4998] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6770] creat("./bus", 000 [pid 4993] <... openat resumed>) = 4 [pid 6775] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] fstat(4, [pid 6768] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6768, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(4 [pid 4997] <... openat resumed>) = 3 [pid 4993] <... close resumed>) = 0 [ 163.044007][ T6772] loop3: detected capacity change from 0 to 4096 [ 163.044114][ T6776] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] rmdir("./147/file0" [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 6770] <... creat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] getdents64(3, [pid 6770] unlink("./bus") = 0 [pid 4997] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(3 [pid 4997] lstat("./147/binderfs", [pid 4993] <... close resumed>) = 0 [pid 6770] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] rmdir("./147" [pid 4997] unlink("./147/binderfs" [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4993] mkdir("./148", 0777 [pid 4997] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 6770] <... pwritev2 resumed>) = 65007 [pid 6770] exit_group(0) = ? [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6777 [ 163.100117][ T6772] NILFS (loop3): invalid segment: Checksum error in segment payload [ 163.110358][ T6772] NILFS (loop3): trying rollback from an earlier position [pid 4998] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6777 attached [pid 6777] chdir("./148") = 0 [pid 6777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6777] setpgid(0, 0) = 0 [pid 6777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6777] write(3, "1000", 4) = 4 [pid 6770] +++ exited with 0 +++ [pid 6777] close(3) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6770, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [ 163.179550][ T6772] NILFS (loop3): recovery complete [pid 6777] symlink("/dev/binderfs", "./binderfs" [pid 4998] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6772] <... mount resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6777] <... symlink resumed>) = 0 [pid 4994] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6777] memfd_create("syzkaller", 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6777] <... memfd_create resumed>) = 3 [pid 6772] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] lstat("./147/file0", [pid 4994] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6775] <... write resumed>) = 2097152 [pid 6772] <... openat resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6777] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6775] munmap(0x7f46b9f9b000, 2097152 [pid 6772] chdir("./file0" [pid 4998] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./146/binderfs") = 0 [pid 4994] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6775] <... munmap resumed>) = 0 [pid 6772] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./147/file0", [pid 6775] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6772] ioctl(4, LOOP_CLR_FD [pid 4998] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4997] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] getdents64(4, [pid 4997] <... openat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] fstat(4, [pid 4998] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4998] close(4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [ 163.202506][ T6778] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 6775] <... openat resumed>) = 4 [pid 6772] <... ioctl resumed>) = 0 [pid 6775] ioctl(4, LOOP_SET_FD, 3 [pid 6772] close(4 [pid 4998] rmdir("./147/file0" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6772] <... close resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] close(4 [pid 4998] getdents64(3, [pid 4997] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] rmdir("./147/file0" [pid 4998] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4998] rmdir("./147" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] close(3 [pid 4998] mkdir("./148", 0777 [pid 4997] <... close resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] rmdir("./147" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... rmdir resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] mkdir("./148", 0777 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... mkdir resumed>) = 0 [pid 6775] <... ioctl resumed>) = 0 [pid 6772] creat("./bus", 000 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6779 [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6772] <... creat resumed>) = 4 [pid 6772] unlink("./bus" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6780 [pid 6772] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 6780 attached [pid 6775] close(3 [pid 6780] chdir("./148" [pid 6775] <... close resumed>) = 0 [pid 6772] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 6779 attached [pid 6775] mkdir("./file0", 0777 [pid 6779] chdir("./148" [pid 4994] <... umount2 resumed>) = 0 [pid 6779] <... chdir resumed>) = 0 [pid 6779] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6775] <... mkdir resumed>) = 0 [pid 4994] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6780] <... chdir resumed>) = 0 [pid 6779] <... prctl resumed>) = 0 [pid 6775] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6779] setpgid(0, 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6779] <... setpgid resumed>) = 0 [pid 6779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] lstat("./146/file0", [pid 6780] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6779] <... openat resumed>) = 3 [pid 6779] write(3, "1000", 4 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6780] <... prctl resumed>) = 0 [pid 6779] <... write resumed>) = 4 [pid 4994] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6779] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6780] setpgid(0, 0 [pid 6779] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6779] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... openat resumed>) = 4 [pid 6780] <... setpgid resumed>) = 0 [pid 6779] <... symlink resumed>) = 0 [pid 4994] fstat(4, [pid 6780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6779] memfd_create("syzkaller", 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6779] <... memfd_create resumed>) = 3 [pid 4994] getdents64(4, [pid 6780] <... openat resumed>) = 3 [pid 6779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6780] write(3, "1000", 4 [pid 6779] <... mmap resumed>) = 0x7f46b9f9b000 [ 163.245253][ T6775] loop2: detected capacity change from 0 to 4096 [pid 4994] getdents64(4, [pid 6780] <... write resumed>) = 4 [pid 6772] <... pwritev2 resumed>) = 65007 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6780] close(3 [pid 4994] close(4 [pid 6780] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6780] symlink("/dev/binderfs", "./binderfs" [pid 4994] rmdir("./146/file0" [pid 6780] <... symlink resumed>) = 0 [pid 6772] exit_group(0 [pid 4994] <... rmdir resumed>) = 0 [pid 6780] memfd_create("syzkaller", 0 [pid 6777] <... write resumed>) = 2097152 [pid 6772] <... exit_group resumed>) = ? [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3 [pid 6780] <... memfd_create resumed>) = 3 [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./146") = 0 [pid 4994] mkdir("./147", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6781 [pid 6780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 6781 attached ) = 0x7f46b9f9b000 [pid 6781] chdir("./147") = 0 [pid 6781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6781] setpgid(0, 0) = 0 [pid 6781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6777] munmap(0x7f46b9f9b000, 2097152 [pid 6781] <... openat resumed>) = 3 [pid 6777] <... munmap resumed>) = 0 [pid 6781] write(3, "1000", 4) = 4 [pid 6781] close(3) = 0 [pid 6781] symlink("/dev/binderfs", "./binderfs" [pid 6777] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6781] <... symlink resumed>) = 0 [pid 6779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6777] <... openat resumed>) = 4 [pid 6781] memfd_create("syzkaller", 0 [ 163.306457][ T6775] NILFS (loop2): invalid segment: Checksum error in segment payload [ 163.343663][ T6777] loop0: detected capacity change from 0 to 4096 [pid 6777] ioctl(4, LOOP_SET_FD, 3 [pid 6781] <... memfd_create resumed>) = 3 [pid 6772] +++ exited with 0 +++ [pid 6781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6772, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 6781] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./147/binderfs") = 0 [pid 4996] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 163.344654][ T6775] NILFS (loop2): trying rollback from an earlier position [pid 6780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6777] <... ioctl resumed>) = 0 [pid 6777] close(3) = 0 [pid 6777] mkdir("./file0", 0777) = 0 [pid 6777] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6780] <... write resumed>) = 2097152 [pid 6781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6780] munmap(0x7f46b9f9b000, 2097152 [pid 6779] <... write resumed>) = 2097152 [pid 6775] <... mount resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./147/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 6779] munmap(0x7f46b9f9b000, 2097152 [pid 4996] rmdir("./147" [pid 6779] <... munmap resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6780] <... munmap resumed>) = 0 [ 163.418115][ T6777] NILFS (loop0): invalid segment: Checksum error in segment payload [ 163.423621][ T6775] NILFS (loop2): recovery complete [ 163.438700][ T6782] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.455556][ T6779] loop5: detected capacity change from 0 to 4096 [pid 4996] mkdir("./148", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6779] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 6779] <... openat resumed>) = 4 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6779] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 6781] <... write resumed>) = 2097152 [pid 6780] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6775] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... close resumed>) = 0 [pid 6781] munmap(0x7f46b9f9b000, 2097152 [pid 6780] <... openat resumed>) = 4 [pid 6775] <... openat resumed>) = 3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6781] <... munmap resumed>) = 0 [pid 6780] ioctl(4, LOOP_SET_FD, 3 [pid 6775] chdir("./file0" [pid 6781] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6783 [pid 6779] <... ioctl resumed>) = 0 [pid 6779] close(3) = 0 [pid 6779] mkdir("./file0", 0777 [pid 6775] <... chdir resumed>) = 0 [pid 6781] <... openat resumed>) = 4 [pid 6775] ioctl(4, LOOP_CLR_FD [pid 6781] ioctl(4, LOOP_SET_FD, 3 [pid 6775] <... ioctl resumed>) = 0 [pid 6780] <... ioctl resumed>) = 0 [pid 6779] <... mkdir resumed>) = 0 [pid 6779] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6775] close(4./strace-static-x86_64: Process 6783 attached [pid 6781] <... ioctl resumed>) = 0 [pid 6780] close(3 [pid 6775] <... close resumed>) = 0 [pid 6783] chdir("./148" [pid 6781] close(3 [pid 6780] <... close resumed>) = 0 [pid 6775] creat("./bus", 000 [pid 6783] <... chdir resumed>) = 0 [pid 6781] <... close resumed>) = 0 [pid 6780] mkdir("./file0", 0777 [pid 6775] <... creat resumed>) = 4 [pid 6783] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6781] mkdir("./file0", 0777 [pid 6780] <... mkdir resumed>) = 0 [ 163.467322][ T6777] NILFS (loop0): trying rollback from an earlier position [ 163.483405][ T6780] loop4: detected capacity change from 0 to 4096 [ 163.493109][ T6781] loop1: detected capacity change from 0 to 4096 [ 163.504988][ T6777] NILFS (loop0): recovery complete [pid 6775] unlink("./bus" [pid 6783] <... prctl resumed>) = 0 [pid 6781] <... mkdir resumed>) = 0 [pid 6780] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6775] <... unlink resumed>) = 0 [pid 6783] setpgid(0, 0 [pid 6781] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6775] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6783] <... setpgid resumed>) = 0 [pid 6777] <... mount resumed>) = 0 [pid 6783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6777] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6783] <... openat resumed>) = 3 [pid 6777] <... openat resumed>) = 3 [pid 6783] write(3, "1000", 4 [pid 6777] chdir("./file0" [pid 6775] <... pwritev2 resumed>) = 65007 [pid 6783] <... write resumed>) = 4 [ 163.520826][ T6779] NILFS (loop5): invalid segment: Checksum error in segment payload [ 163.526842][ T6780] NILFS (loop4): invalid segment: Checksum error in segment payload [ 163.530405][ T6779] NILFS (loop5): trying rollback from an earlier position [ 163.541915][ T6781] NILFS (loop1): invalid segment: Checksum error in segment payload [ 163.548436][ T6780] NILFS (loop4): trying rollback from an earlier position [ 163.559913][ T6784] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6777] <... chdir resumed>) = 0 [pid 6783] close(3 [pid 6777] ioctl(4, LOOP_CLR_FD [pid 6775] exit_group(0 [pid 6783] <... close resumed>) = 0 [pid 6777] <... ioctl resumed>) = 0 [pid 6783] symlink("/dev/binderfs", "./binderfs" [pid 6777] close(4 [pid 6775] <... exit_group resumed>) = ? [pid 6783] <... symlink resumed>) = 0 [pid 6777] <... close resumed>) = 0 [pid 6783] memfd_create("syzkaller", 0 [pid 6777] creat("./bus", 000 [pid 6783] <... memfd_create resumed>) = 3 [pid 6783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 163.573441][ T6779] NILFS (loop5): recovery complete [pid 6777] <... creat resumed>) = 4 [pid 6777] unlink("./bus" [pid 6775] +++ exited with 0 +++ [pid 6779] <... mount resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6775, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6779] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6777] <... unlink resumed>) = 0 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6777] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6779] <... openat resumed>) = 3 [pid 4995] <... restart_syscall resumed>) = 0 [pid 6779] chdir("./file0" [pid 6783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6779] <... chdir resumed>) = 0 [pid 6779] ioctl(4, LOOP_CLR_FD) = 0 [pid 4995] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6779] close(4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6779] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6779] creat("./bus", 000 [pid 6783] <... write resumed>) = 2097152 [pid 4995] <... openat resumed>) = 3 [pid 6783] munmap(0x7f46b9f9b000, 2097152 [pid 4995] fstat(3, [pid 6780] <... mount resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6783] <... munmap resumed>) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6780] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 4995] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6780] chdir("./file0" [pid 6779] <... creat resumed>) = 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6780] <... chdir resumed>) = 0 [pid 4995] lstat("./144/binderfs", [pid 6780] ioctl(4, LOOP_CLR_FD [pid 6779] unlink("./bus" [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6780] <... ioctl resumed>) = 0 [pid 6780] close(4 [pid 4995] unlink("./144/binderfs" [pid 6780] <... close resumed>) = 0 [ 163.597760][ T6785] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.610504][ T6780] NILFS (loop4): recovery complete [ 163.616801][ T6781] NILFS (loop1): trying rollback from an earlier position [ 163.627351][ T6786] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] <... unlink resumed>) = 0 [pid 6780] creat("./bus", 000 [pid 4995] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6777] <... pwritev2 resumed>) = 65007 [pid 6779] <... unlink resumed>) = 0 [pid 6777] exit_group(0 [pid 6779] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6783] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6777] <... exit_group resumed>) = ? [pid 6783] <... openat resumed>) = 4 [ 163.659127][ T6781] NILFS (loop1): recovery complete [pid 6783] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6783] close(3) = 0 [pid 6783] mkdir("./file0", 0777 [pid 6777] +++ exited with 0 +++ [pid 6780] <... creat resumed>) = 4 [pid 6780] unlink("./bus" [pid 6783] <... mkdir resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6777, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6779] <... pwritev2 resumed>) = 65007 [pid 6779] exit_group(0 [pid 6783] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6780] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6780] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6779] <... exit_group resumed>) = ? [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 6781] <... mount resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [ 163.685398][ T6783] loop3: detected capacity change from 0 to 4096 [ 163.718956][ T6787] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6781] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6781] <... openat resumed>) = 3 [pid 6781] chdir("./file0" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6781] <... chdir resumed>) = 0 [pid 6781] ioctl(4, LOOP_CLR_FD [pid 4995] lstat("./144/file0", [pid 6781] <... ioctl resumed>) = 0 [pid 6781] close(4 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6781] <... close resumed>) = 0 [pid 6781] creat("./bus", 000 [pid 4995] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./148/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] unlink("./148/binderfs" [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4995] close(4) = 0 [pid 4993] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./144/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./144" [pid 6781] <... creat resumed>) = 4 [pid 6779] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6779, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6781] unlink("./bus" [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./145", 0777 [pid 4998] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] fstat(3, [pid 4995] close(3) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6788 [pid 6781] <... unlink resumed>) = 0 [pid 4998] getdents64(3, [pid 6781] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./148/binderfs") = 0 [pid 6780] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6780] exit_group(0) = ? [ 163.739489][ T6783] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6780] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6780, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6788 attached [pid 6788] chdir("./145" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6788] <... chdir resumed>) = 0 [pid 6788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6788] setpgid(0, 0) = 0 [pid 6788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6781] <... pwritev2 resumed>) = 65007 [pid 6788] <... openat resumed>) = 3 [pid 6781] exit_group(0) = ? [pid 6788] write(3, "1000", 4 [pid 4997] <... openat resumed>) = 3 [pid 4993] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6788] <... write resumed>) = 4 [pid 6788] close(3 [pid 4997] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6788] <... close resumed>) = 0 [pid 6788] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] lstat("./148/file0", [pid 6788] memfd_create("syzkaller", 0 [pid 4997] getdents64(3, [pid 6788] <... memfd_create resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6781] +++ exited with 0 +++ [pid 4997] lstat("./148/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6781, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] unlink("./148/binderfs" [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... openat resumed>) = 4 [pid 4997] <... unlink resumed>) = 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] fstat(4, [pid 4997] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(4, [pid 4994] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] fstat(3, [pid 4993] close(4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4993] rmdir("./148/file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... rmdir resumed>) = 0 [pid 4994] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] lstat("./147/binderfs", [pid 4993] close(3 [pid 4998] <... umount2 resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... close resumed>) = 0 [ 163.811226][ T6783] NILFS (loop3): trying rollback from an earlier position [pid 4998] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./147/binderfs" [pid 4993] rmdir("./148" [pid 4998] lstat("./148/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] mkdir("./149", 0777 [pid 4998] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./148/file0") = 0 [pid 4993] <... openat resumed>) = 3 [pid 6788] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] getdents64(3, [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6789 ./strace-static-x86_64: Process 6789 attached [pid 6789] chdir("./149") = 0 [pid 6789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6789] setpgid(0, 0) = 0 [pid 6789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6789] write(3, "1000", 4) = 4 [pid 6789] close(3) = 0 [pid 6789] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6789] <... symlink resumed>) = 0 [pid 4998] close(3 [pid 6789] memfd_create("syzkaller", 0 [pid 4998] <... close resumed>) = 0 [pid 6789] <... memfd_create resumed>) = 3 [pid 4997] <... umount2 resumed>) = 0 [pid 6789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] rmdir("./148" [pid 4997] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6789] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6788] <... write resumed>) = 2097152 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6788] munmap(0x7f46b9f9b000, 2097152 [pid 4998] mkdir("./149", 0777 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 163.908308][ T6783] NILFS (loop3): recovery complete [pid 4994] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6788] <... munmap resumed>) = 0 [pid 6783] <... mount resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] lstat("./148/file0", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6788] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6783] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./147/file0", [pid 6788] <... openat resumed>) = 4 [pid 6783] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4997] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6788] ioctl(4, LOOP_SET_FD, 3 [pid 6783] chdir("./file0" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6783] <... chdir resumed>) = 0 [pid 6783] ioctl(4, LOOP_CLR_FD) = 0 [pid 6783] close(4) = 0 [pid 6783] creat("./bus", 000 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6788] <... ioctl resumed>) = 0 [pid 4998] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4994] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6788] close(3 [pid 4998] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4994] <... openat resumed>) = 4 [pid 6788] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(4, [pid 4997] getdents64(4, [pid 6788] mkdir("./file0", 0777 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6791 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6788] <... mkdir resumed>) = 0 [pid 4997] close(4 [pid 4994] getdents64(4, [pid 6788] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] rmdir("./148/file0" [pid 4994] close(4 [pid 4997] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6791 attached [pid 6789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] getdents64(3, [pid 4994] <... close resumed>) = 0 [ 163.942186][ T6790] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 163.960793][ T6788] loop2: detected capacity change from 0 to 4096 [pid 6791] chdir("./149" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./147/file0" [pid 6783] <... creat resumed>) = 4 [pid 6783] unlink("./bus") = 0 [pid 6783] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6791] <... chdir resumed>) = 0 [pid 4997] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 6791] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... close resumed>) = 0 [pid 6791] <... prctl resumed>) = 0 [pid 4997] rmdir("./148" [pid 6791] setpgid(0, 0 [pid 4994] getdents64(3, [pid 4997] <... rmdir resumed>) = 0 [pid 6791] <... setpgid resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] close(3 [pid 6791] <... openat resumed>) = 3 [pid 4997] mkdir("./149", 0777 [pid 4994] <... close resumed>) = 0 [pid 6791] write(3, "1000", 4 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] rmdir("./147" [pid 6791] <... write resumed>) = 4 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6791] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 6791] <... close resumed>) = 0 [pid 4994] mkdir("./148", 0777 [pid 6791] symlink("/dev/binderfs", "./binderfs" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6791] <... symlink resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6791] memfd_create("syzkaller", 0) = 3 [pid 4997] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] <... close resumed>) = 0 [pid 6791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 3 [pid 6791] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6792 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6793 [pid 6783] <... pwritev2 resumed>) = 65007 [ 163.986429][ T6788] NILFS (loop2): invalid segment: Checksum error in segment payload [ 164.003518][ T6788] NILFS (loop2): trying rollback from an earlier position [pid 6783] exit_group(0) = ? ./strace-static-x86_64: Process 6793 attached ./strace-static-x86_64: Process 6792 attached [pid 6789] <... write resumed>) = 2097152 [pid 6792] chdir("./149" [pid 6793] chdir("./148" [pid 6792] <... chdir resumed>) = 0 [pid 6792] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6793] <... chdir resumed>) = 0 [pid 6792] <... prctl resumed>) = 0 [pid 6793] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6792] setpgid(0, 0 [pid 6793] <... prctl resumed>) = 0 [pid 6792] <... setpgid resumed>) = 0 [pid 6793] setpgid(0, 0) = 0 [pid 6792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6792] <... openat resumed>) = 3 [pid 6793] write(3, "1000", 4 [pid 6792] write(3, "1000", 4 [pid 6791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6793] <... write resumed>) = 4 [pid 6792] <... write resumed>) = 4 [pid 6783] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6783, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6793] close(3 [pid 4996] unlink("./148/binderfs" [pid 6792] close(3 [pid 6793] <... close resumed>) = 0 [pid 6792] <... close resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 6793] symlink("/dev/binderfs", "./binderfs" [pid 6792] symlink("/dev/binderfs", "./binderfs" [pid 6789] munmap(0x7f46b9f9b000, 2097152 [pid 4996] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6793] <... symlink resumed>) = 0 [pid 6792] <... symlink resumed>) = 0 [pid 6789] <... munmap resumed>) = 0 [pid 6789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 164.066856][ T6788] NILFS (loop2): recovery complete [pid 6789] ioctl(4, LOOP_SET_FD, 3 [pid 6793] memfd_create("syzkaller", 0 [pid 6792] memfd_create("syzkaller", 0 [pid 6791] <... write resumed>) = 2097152 [pid 6789] <... ioctl resumed>) = 0 [pid 6793] <... memfd_create resumed>) = 3 [pid 6792] <... memfd_create resumed>) = 3 [pid 6791] munmap(0x7f46b9f9b000, 2097152 [pid 6793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6791] <... munmap resumed>) = 0 [pid 6793] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6792] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6791] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6789] close(3 [pid 6788] <... mount resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 6791] ioctl(4, LOOP_SET_FD, 3 [pid 6789] <... close resumed>) = 0 [pid 6788] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 164.090855][ T6789] loop0: detected capacity change from 0 to 4096 [ 164.107510][ T6794] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6792] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6789] mkdir("./file0", 0777 [pid 6788] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6791] <... ioctl resumed>) = 0 [pid 6791] close(3) = 0 [pid 6791] mkdir("./file0", 0777 [pid 6789] <... mkdir resumed>) = 0 [pid 6788] chdir("./file0" [pid 4996] lstat("./148/file0", [pid 6789] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6788] <... chdir resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6791] <... mkdir resumed>) = 0 [pid 6788] ioctl(4, LOOP_CLR_FD [pid 4996] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6791] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6788] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6788] close(4 [pid 4996] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6788] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 6788] creat("./bus", 000 [pid 4996] fstat(4, [pid 6788] <... creat resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6788] unlink("./bus" [pid 4996] getdents64(4, [pid 6788] <... unlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [ 164.136071][ T6791] loop5: detected capacity change from 0 to 4096 [ 164.152003][ T6789] NILFS (loop0): invalid segment: Checksum error in segment payload [ 164.170072][ T6791] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6788] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] getdents64(4, [pid 6793] <... write resumed>) = 2097152 [pid 6792] <... write resumed>) = 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./148/file0" [pid 6793] munmap(0x7f46b9f9b000, 2097152 [pid 6792] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 6788] <... pwritev2 resumed>) = 65007 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6788] exit_group(0 [pid 4996] close(3 [pid 6788] <... exit_group resumed>) = ? [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./148") = 0 [pid 4996] mkdir("./149", 0777) = 0 [pid 6793] <... munmap resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6793] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6792] <... munmap resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6793] <... openat resumed>) = 4 [pid 6792] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 6793] ioctl(4, LOOP_SET_FD, 3 [pid 6792] <... openat resumed>) = 4 [pid 6788] +++ exited with 0 +++ [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6792] ioctl(4, LOOP_SET_FD, 3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6788, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6795 [ 164.190074][ T6791] NILFS (loop5): trying rollback from an earlier position [ 164.212052][ T6789] NILFS (loop0): trying rollback from an earlier position [ 164.227107][ T6792] loop4: detected capacity change from 0 to 4096 [ 164.227716][ T6793] loop1: detected capacity change from 0 to 4096 ./strace-static-x86_64: Process 6795 attached [pid 6792] <... ioctl resumed>) = 0 [pid 6792] close(3 [pid 6795] chdir("./149" [pid 6792] <... close resumed>) = 0 [pid 6792] mkdir("./file0", 0777 [pid 6795] <... chdir resumed>) = 0 [pid 6795] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6792] <... mkdir resumed>) = 0 [pid 6791] <... mount resumed>) = 0 [pid 6791] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6791] chdir("./file0") = 0 [pid 6791] ioctl(4, LOOP_CLR_FD) = 0 [pid 6791] close(4) = 0 [pid 6791] creat("./bus", 000 [pid 6793] <... ioctl resumed>) = 0 [pid 6793] close(3) = 0 [pid 6793] mkdir("./file0", 0777 [pid 6792] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6793] <... mkdir resumed>) = 0 [pid 6793] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, [pid 6795] <... prctl resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6795] setpgid(0, 0 [pid 4995] getdents64(3, [pid 6795] <... setpgid resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6795] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6795] write(3, "1000", 4 [pid 4995] lstat("./145/binderfs", [pid 6795] <... write resumed>) = 4 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6795] close(3 [pid 4995] unlink("./145/binderfs" [pid 6795] <... close resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6795] symlink("/dev/binderfs", "./binderfs" [pid 4995] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6795] <... symlink resumed>) = 0 [pid 6795] memfd_create("syzkaller", 0) = 3 [pid 6795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 164.241520][ T6791] NILFS (loop5): recovery complete [ 164.250235][ T6796] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.251060][ T6789] NILFS (loop0): recovery complete [pid 6791] <... creat resumed>) = 4 [pid 6791] unlink("./bus") = 0 [pid 6791] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 164.285636][ T6792] NILFS (loop4): invalid segment: Checksum error in segment payload [ 164.289281][ T6793] NILFS (loop1): invalid segment: Checksum error in segment payload [ 164.305892][ T6792] NILFS (loop4): trying rollback from an earlier position [pid 6795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6789] <... mount resumed>) = 0 [pid 6789] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6789] chdir("./file0" [pid 6791] <... pwritev2 resumed>) = 65007 [pid 6791] exit_group(0) = ? [pid 6789] <... chdir resumed>) = 0 [pid 6789] ioctl(4, LOOP_CLR_FD) = 0 [pid 6789] close(4) = 0 [pid 6789] creat("./bus", 000 [pid 6791] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6791, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6789] <... creat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 6789] unlink("./bus" [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6789] <... unlink resumed>) = 0 [pid 6789] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./149/binderfs") = 0 [pid 4998] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6795] <... write resumed>) = 2097152 [pid 4995] <... umount2 resumed>) = 0 [pid 6789] <... pwritev2 resumed>) = 65007 [pid 6789] exit_group(0) = ? [pid 4995] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 164.341897][ T6797] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.355106][ T6793] NILFS (loop1): trying rollback from an earlier position [ 164.363522][ T6792] NILFS (loop4): recovery complete [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 6795] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6792] <... mount resumed>) = 0 [pid 6792] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6795] <... munmap resumed>) = 0 [pid 4995] close(4 [pid 6792] chdir("./file0") = 0 [pid 6792] ioctl(4, LOOP_CLR_FD) = 0 [pid 6792] close(4) = 0 [pid 6792] creat("./bus", 000 [pid 4995] <... close resumed>) = 0 [pid 6795] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6789] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6789, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4995] rmdir("./145/file0" [pid 6795] <... openat resumed>) = 4 [pid 4998] <... umount2 resumed>) = 0 [pid 4993] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 6795] ioctl(4, LOOP_SET_FD, 3 [pid 4995] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4993] lstat("./149/binderfs", [pid 4998] lstat("./149/file0", [pid 4995] rmdir("./145" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] unlink("./149/binderfs" [pid 4998] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] mkdir("./146", 0777 [pid 4993] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4998] fstat(4, [pid 4993] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4993] lstat("./149/file0", [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4993] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(4 [pid 4993] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4998] rmdir("./149/file0" [pid 4993] fstat(4, [pid 4998] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4993] getdents64(4, [pid 4995] <... openat resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] close(3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] getdents64(4, [pid 4998] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./149" [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] close(3 [pid 4993] <... close resumed>) = 0 [pid 4998] mkdir("./150", 0777 [pid 4995] <... close resumed>) = 0 [pid 4993] rmdir("./149/file0" [pid 4998] <... mkdir resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... rmdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] getdents64(3, [pid 4998] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4993] close(3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... close resumed>) = 0 [pid 4998] close(3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6800 [pid 4993] rmdir("./149" [pid 4998] <... close resumed>) = 0 [ 164.427419][ T6798] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.441324][ T6793] NILFS (loop1): recovery complete [ 164.459566][ T6795] loop3: detected capacity change from 0 to 4096 [pid 4993] <... rmdir resumed>) = 0 [pid 6793] <... mount resumed>) = 0 [pid 6792] <... creat resumed>) = 4 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] mkdir("./150", 0777 [pid 6793] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6792] unlink("./bus" [pid 4993] <... mkdir resumed>) = 0 [pid 6793] <... openat resumed>) = 3 [pid 6792] <... unlink resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6801 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 6800 attached [pid 6793] chdir("./file0" [pid 6792] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... openat resumed>) = 3 [pid 6793] <... chdir resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6800] chdir("./146" [pid 6795] <... ioctl resumed>) = 0 [pid 6793] ioctl(4, LOOP_CLR_FD) = 0 [pid 6793] close(4) = 0 [pid 6793] creat("./bus", 000 [pid 6800] <... chdir resumed>) = 0 [pid 6795] close(3 [pid 6800] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6795] <... close resumed>) = 0 ./strace-static-x86_64: Process 6801 attached [pid 6800] <... prctl resumed>) = 0 [pid 6801] chdir("./150" [pid 6800] setpgid(0, 0 [pid 6795] mkdir("./file0", 0777 [pid 6801] <... chdir resumed>) = 0 [pid 6801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6801] setpgid(0, 0) = 0 [pid 6801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6800] <... setpgid resumed>) = 0 [pid 6795] <... mkdir resumed>) = 0 [pid 6801] write(3, "1000", 4 [pid 6800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6792] <... pwritev2 resumed>) = 65007 [pid 6801] <... write resumed>) = 4 [pid 6800] <... openat resumed>) = 3 [pid 6795] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6792] exit_group(0 [pid 6801] close(3 [pid 6800] write(3, "1000", 4 [pid 6792] <... exit_group resumed>) = ? [pid 6801] <... close resumed>) = 0 [pid 6800] <... write resumed>) = 4 [pid 6801] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6801] memfd_create("syzkaller", 0 [pid 6800] close(3 [pid 6801] <... memfd_create resumed>) = 3 [pid 6800] <... close resumed>) = 0 [pid 6801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6800] symlink("/dev/binderfs", "./binderfs" [pid 6801] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6800] <... symlink resumed>) = 0 [pid 6793] <... creat resumed>) = 4 [pid 6793] unlink("./bus" [pid 6800] memfd_create("syzkaller", 0 [pid 6792] +++ exited with 0 +++ [pid 6800] <... memfd_create resumed>) = 3 [pid 6793] <... unlink resumed>) = 0 [pid 6800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [ 164.477740][ T6799] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.516358][ T6795] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6793] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6792, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=3 /* 0.03 s */} --- [pid 6800] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, [pid 6793] <... pwritev2 resumed>) = 65007 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6793] exit_group(0) = ? [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./149/binderfs" [pid 6793] +++ exited with 0 +++ [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6793, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] <... ioctl resumed>) = 0 [pid 4993] close(3 [pid 6800] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... umount2 resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4997] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [ 164.539162][ T6795] NILFS (loop3): trying rollback from an earlier position [pid 4997] lstat("./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6802 [pid 4997] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4994] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] close(4 [pid 4994] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6802 attached [pid 4997] <... close resumed>) = 0 [pid 4994] fstat(3, [pid 6802] chdir("./150" [pid 4997] rmdir("./149/file0" [pid 6802] <... chdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6802] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] getdents64(3, [pid 4994] getdents64(3, [pid 6802] <... prctl resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6802] setpgid(0, 0 [pid 4997] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6802] <... setpgid resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] rmdir("./149" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6802] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] lstat("./148/binderfs", [pid 6802] write(3, "1000", 4 [pid 4997] mkdir("./150", 0777 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6802] <... write resumed>) = 4 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] unlink("./148/binderfs" [pid 6802] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6802] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... unlink resumed>) = 0 [pid 6802] symlink("/dev/binderfs", "./binderfs" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6802] <... symlink resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6802] memfd_create("syzkaller", 0 [pid 4997] close(3 [pid 6802] <... memfd_create resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 6802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6802] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6803 ./strace-static-x86_64: Process 6803 attached [pid 6803] chdir("./150") = 0 [pid 6803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6803] setpgid(0, 0) = 0 [pid 6803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6803] write(3, "1000", 4) = 4 [pid 6803] close(3) = 0 [pid 6803] symlink("/dev/binderfs", "./binderfs") = 0 [ 164.637294][ T6795] NILFS (loop3): recovery complete [pid 6803] memfd_create("syzkaller", 0) = 3 [pid 6803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6802] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6800] <... write resumed>) = 2097152 [pid 6795] <... mount resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6803] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6795] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 4994] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6800] munmap(0x7f46b9f9b000, 2097152 [pid 6795] chdir("./file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6800] <... munmap resumed>) = 0 [pid 6795] <... chdir resumed>) = 0 [pid 4994] lstat("./148/file0", [pid 6801] <... write resumed>) = 2097152 [pid 6800] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6795] ioctl(4, LOOP_CLR_FD [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6800] <... openat resumed>) = 4 [pid 6795] <... ioctl resumed>) = 0 [pid 4994] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6800] ioctl(4, LOOP_SET_FD, 3 [pid 6795] close(4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 164.668689][ T6804] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6801] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6801] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6801] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6795] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6795] creat("./bus", 000 [pid 4994] <... openat resumed>) = 4 [pid 6801] close(3) = 0 [pid 6801] mkdir("./file0", 0777) = 0 [pid 4994] fstat(4, [pid 6801] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 6795] <... creat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 6795] unlink("./bus" [pid 4994] rmdir("./148/file0" [pid 6795] <... unlink resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [ 164.713692][ T6800] loop2: detected capacity change from 0 to 4096 [ 164.717951][ T6801] loop5: detected capacity change from 0 to 4096 [pid 6795] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] getdents64(3, [pid 6800] <... ioctl resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6800] close(3 [pid 4994] close(3 [pid 6800] <... close resumed>) = 0 [pid 6800] mkdir("./file0", 0777 [pid 4994] <... close resumed>) = 0 [pid 6800] <... mkdir resumed>) = 0 [pid 4994] rmdir("./148" [pid 6795] <... pwritev2 resumed>) = 65007 [pid 6800] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6795] exit_group(0 [pid 4994] <... rmdir resumed>) = 0 [pid 6802] <... write resumed>) = 2097152 [pid 6795] <... exit_group resumed>) = ? [pid 6802] munmap(0x7f46b9f9b000, 2097152 [pid 4994] mkdir("./149", 0777 [pid 6802] <... munmap resumed>) = 0 [pid 6802] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 164.760584][ T6801] NILFS (loop5): invalid segment: Checksum error in segment payload [ 164.786910][ T6801] NILFS (loop5): trying rollback from an earlier position [ 164.800540][ T6800] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6802] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... mkdir resumed>) = 0 [pid 6795] +++ exited with 0 +++ [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6795, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=8 /* 0.08 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... openat resumed>) = 3 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] close(3 [pid 4996] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] <... close resumed>) = 0 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6805 [pid 4996] lstat("./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./149/binderfs") = 0 [pid 6803] <... write resumed>) = 2097152 [pid 4996] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6805 attached [pid 6802] <... ioctl resumed>) = 0 [pid 6805] chdir("./149" [ 164.807001][ T6802] loop0: detected capacity change from 0 to 4096 [ 164.815102][ T6800] NILFS (loop2): trying rollback from an earlier position [pid 6803] munmap(0x7f46b9f9b000, 2097152 [pid 6802] close(3 [pid 6805] <... chdir resumed>) = 0 [pid 6803] <... munmap resumed>) = 0 [pid 6802] <... close resumed>) = 0 [pid 6805] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6802] mkdir("./file0", 0777 [pid 6803] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6802] <... mkdir resumed>) = 0 [pid 6803] <... openat resumed>) = 4 [pid 6802] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6803] ioctl(4, LOOP_SET_FD, 3 [pid 6805] <... prctl resumed>) = 0 [pid 6805] setpgid(0, 0) = 0 [pid 6805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6803] <... ioctl resumed>) = 0 [pid 6801] <... mount resumed>) = 0 [pid 6800] <... mount resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [ 164.858975][ T6801] NILFS (loop5): recovery complete [ 164.868294][ T6800] NILFS (loop2): recovery complete [ 164.873247][ T6803] loop4: detected capacity change from 0 to 4096 [ 164.884062][ T6806] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 164.895848][ T6807] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6801] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6801] chdir("./file0") = 0 [pid 6801] ioctl(4, LOOP_CLR_FD) = 0 [pid 6801] close(4 [pid 6805] <... openat resumed>) = 3 [pid 6803] close(3 [pid 6801] <... close resumed>) = 0 [pid 6800] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6805] write(3, "1000", 4 [pid 6803] <... close resumed>) = 0 [pid 6800] <... openat resumed>) = 3 [pid 6801] creat("./bus", 000 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6805] <... write resumed>) = 4 [pid 6803] mkdir("./file0", 0777 [pid 6800] chdir("./file0" [pid 4996] lstat("./149/file0", [pid 6805] close(3 [pid 6803] <... mkdir resumed>) = 0 [pid 6800] <... chdir resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6805] <... close resumed>) = 0 [pid 6803] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6800] ioctl(4, LOOP_CLR_FD [pid 4996] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6805] symlink("/dev/binderfs", "./binderfs" [pid 6800] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6805] <... symlink resumed>) = 0 [pid 6800] close(4 [pid 4996] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6805] memfd_create("syzkaller", 0 [pid 6800] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 6805] <... memfd_create resumed>) = 3 [pid 6800] creat("./bus", 000 [ 164.898058][ T6802] NILFS (loop0): invalid segment: Checksum error in segment payload [ 164.915477][ T6802] NILFS (loop0): trying rollback from an earlier position [ 164.929578][ T6802] NILFS (loop0): recovery complete [ 164.939803][ T6803] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 4996] fstat(4, [pid 6805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6802] <... mount resumed>) = 0 [pid 6800] <... creat resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6805] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6800] unlink("./bus" [pid 4996] getdents64(4, [pid 6802] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6801] <... creat resumed>) = 4 [pid 6800] <... unlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6801] unlink("./bus" [pid 6800] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] getdents64(4, [pid 6802] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 6802] chdir("./file0" [pid 6801] <... unlink resumed>) = 0 [pid 4996] rmdir("./149/file0" [pid 6802] <... chdir resumed>) = 0 [pid 6801] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6802] ioctl(4, LOOP_CLR_FD [pid 6800] <... pwritev2 resumed>) = 65007 [pid 4996] getdents64(3, [pid 6800] exit_group(0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6800] <... exit_group resumed>) = ? [pid 4996] close(3) = 0 [pid 6802] <... ioctl resumed>) = 0 [pid 4996] rmdir("./149" [pid 6802] close(4 [pid 4996] <... rmdir resumed>) = 0 [pid 6802] <... close resumed>) = 0 [pid 4996] mkdir("./150", 0777 [pid 6802] creat("./bus", 000 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6805] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 164.949474][ T6808] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6802] <... creat resumed>) = 4 [pid 6801] <... pwritev2 resumed>) = 65007 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6809 [pid 6802] unlink("./bus" [pid 6801] exit_group(0 [pid 6802] <... unlink resumed>) = 0 [pid 6801] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6809 attached [pid 6809] chdir("./150" [pid 6802] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6800] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6800, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6809] <... chdir resumed>) = 0 [pid 6809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6809] setpgid(0, 0) = 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 6809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4995] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6809] write(3, "1000", 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6809] <... write resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6809] close(3 [pid 4995] <... openat resumed>) = 3 [pid 6809] <... close resumed>) = 0 [pid 4995] fstat(3, [pid 6809] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6809] <... symlink resumed>) = 0 [pid 4995] getdents64(3, [pid 6809] memfd_create("syzkaller", 0 [pid 6801] +++ exited with 0 +++ [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6809] <... memfd_create resumed>) = 3 [pid 4995] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6801, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6809] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4995] lstat("./146/binderfs", [pid 6802] <... pwritev2 resumed>) = 65007 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./146/binderfs") = 0 [pid 6802] exit_group(0 [pid 4995] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6802] <... exit_group resumed>) = ? [pid 4998] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 164.992001][ T6803] NILFS (loop4): trying rollback from an earlier position [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./150/binderfs") = 0 [pid 4998] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6805] <... write resumed>) = 2097152 [pid 6802] +++ exited with 0 +++ [pid 6805] munmap(0x7f46b9f9b000, 2097152 [ 165.064185][ T6803] NILFS (loop4): recovery complete [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6802, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6805] <... munmap resumed>) = 0 [pid 6805] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6805] ioctl(4, LOOP_SET_FD, 3 [pid 4993] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 6805] <... ioctl resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6805] close(3 [pid 4993] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6809] <... write resumed>) = 2097152 [pid 6805] <... close resumed>) = 0 [pid 6803] <... mount resumed>) = 0 [pid 4998] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6809] munmap(0x7f46b9f9b000, 2097152 [pid 6805] mkdir("./file0", 0777 [pid 6803] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./150/binderfs", [pid 6809] <... munmap resumed>) = 0 [pid 6803] <... openat resumed>) = 3 [pid 4998] lstat("./150/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6809] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6803] chdir("./file0" [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./146/file0", [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6809] <... openat resumed>) = 4 [pid 6805] <... mkdir resumed>) = 0 [pid 6803] <... chdir resumed>) = 0 [pid 4998] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] unlink("./150/binderfs" [pid 6809] ioctl(4, LOOP_SET_FD, 3 [pid 6803] ioctl(4, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6809] <... ioctl resumed>) = 0 [pid 6805] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6803] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 6809] close(3 [pid 6803] close(4 [pid 4998] <... openat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6803] <... close resumed>) = 0 [pid 6809] <... close resumed>) = 0 [pid 6809] mkdir("./file0", 0777) = 0 [pid 6809] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6803] creat("./bus", 000 [pid 4998] fstat(4, [pid 4995] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 6803] <... creat resumed>) = 4 [pid 4998] getdents64(4, [ 165.107784][ T6805] loop1: detected capacity change from 0 to 4096 [ 165.126688][ T6810] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.145231][ T6809] loop3: detected capacity change from 0 to 4096 [pid 6803] unlink("./bus" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6803] <... unlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4995] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6803] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 4998] rmdir("./150/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] close(4 [pid 4993] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(3 [pid 4995] rmdir("./146/file0" [pid 4993] lstat("./150/file0", [pid 4998] <... close resumed>) = 0 [pid 6803] <... pwritev2 resumed>) = 65007 [pid 4998] rmdir("./150" [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6803] exit_group(0 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6803] <... exit_group resumed>) = ? [pid 4998] mkdir("./151", 0777 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... mkdir resumed>) = 0 [pid 4995] close(3 [ 165.179879][ T6805] NILFS (loop1): invalid segment: Checksum error in segment payload [ 165.200973][ T6809] NILFS (loop3): invalid segment: Checksum error in segment payload [ 165.206231][ T6805] NILFS (loop1): trying rollback from an earlier position [ 165.218105][ T6809] NILFS (loop3): trying rollback from an earlier position [pid 4993] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... openat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4993] fstat(4, [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] close(3 [pid 4993] getdents64(4, [pid 4998] <... close resumed>) = 0 [pid 4995] rmdir("./146" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6803] +++ exited with 0 +++ [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] getdents64(4, [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6803, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6811 [pid 4995] mkdir("./147", 0777 [pid 4993] close(4) = 0 [pid 4993] rmdir("./150/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./150") = 0 [pid 4993] mkdir("./151", 0777 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 3 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6814 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, [pid 4995] close(3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6809] <... mount resumed>) = 0 ./strace-static-x86_64: Process 6815 attached ./strace-static-x86_64: Process 6814 attached ./strace-static-x86_64: Process 6811 attached [pid 6805] <... mount resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6805] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6809] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6805] <... openat resumed>) = 3 [pid 6815] chdir("./147" [pid 6805] chdir("./file0" [pid 6814] chdir("./151" [pid 6805] <... chdir resumed>) = 0 [pid 6811] chdir("./151" [pid 6805] ioctl(4, LOOP_CLR_FD [pid 4997] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6815 [pid 6814] <... chdir resumed>) = 0 [pid 6811] <... chdir resumed>) = 0 [pid 6809] <... openat resumed>) = 3 [pid 6805] <... ioctl resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6815] <... chdir resumed>) = 0 [pid 6814] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6811] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6809] chdir("./file0" [pid 6805] close(4 [pid 4997] lstat("./150/binderfs", [pid 6815] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6805] <... close resumed>) = 0 [pid 6805] creat("./bus", 000 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6809] <... chdir resumed>) = 0 [pid 6815] <... prctl resumed>) = 0 [pid 6814] <... prctl resumed>) = 0 [pid 6811] <... prctl resumed>) = 0 [pid 4997] unlink("./150/binderfs" [pid 6815] setpgid(0, 0 [pid 6814] setpgid(0, 0 [pid 6811] setpgid(0, 0 [pid 6809] ioctl(4, LOOP_CLR_FD [pid 4997] <... unlink resumed>) = 0 [pid 6814] <... setpgid resumed>) = 0 [pid 6809] <... ioctl resumed>) = 0 [pid 6815] <... setpgid resumed>) = 0 [pid 6811] <... setpgid resumed>) = 0 [pid 6814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6809] close(4 [pid 6815] <... openat resumed>) = 3 [pid 6809] <... close resumed>) = 0 [pid 6809] creat("./bus", 000 [pid 6811] <... openat resumed>) = 3 [pid 6815] write(3, "1000", 4 [pid 6814] <... openat resumed>) = 3 [pid 6811] write(3, "1000", 4 [pid 4997] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6815] <... write resumed>) = 4 [pid 6814] write(3, "1000", 4 [pid 6811] <... write resumed>) = 4 [pid 6815] close(3 [pid 6805] <... creat resumed>) = 4 [pid 6815] <... close resumed>) = 0 [pid 6814] <... write resumed>) = 4 [pid 6811] close(3 [pid 6809] <... creat resumed>) = 4 [pid 6805] unlink("./bus" [pid 6815] symlink("/dev/binderfs", "./binderfs" [pid 6814] close(3 [pid 6811] <... close resumed>) = 0 [pid 6809] unlink("./bus" [pid 6815] <... symlink resumed>) = 0 [pid 6814] <... close resumed>) = 0 [pid 6811] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6814] symlink("/dev/binderfs", "./binderfs" [pid 6809] <... unlink resumed>) = 0 [pid 6809] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6815] memfd_create("syzkaller", 0 [pid 6814] <... symlink resumed>) = 0 [pid 6811] memfd_create("syzkaller", 0 [pid 4997] <... umount2 resumed>) = 0 [pid 6805] <... unlink resumed>) = 0 [ 165.235846][ T6805] NILFS (loop1): recovery complete [ 165.239153][ T6809] NILFS (loop3): recovery complete [ 165.249881][ T6812] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.268408][ T6813] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6805] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6815] <... memfd_create resumed>) = 3 [pid 6814] memfd_create("syzkaller", 0 [pid 6811] <... memfd_create resumed>) = 3 [pid 4997] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6814] <... memfd_create resumed>) = 3 [pid 6811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6815] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6811] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] lstat("./150/file0", [pid 6809] <... pwritev2 resumed>) = 65007 [pid 6814] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6809] exit_group(0) = ? [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6805] <... pwritev2 resumed>) = 65007 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6805] exit_group(0 [pid 4997] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6805] <... exit_group resumed>) = ? [pid 4997] <... openat resumed>) = 4 [pid 6814] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6809] +++ exited with 0 +++ [pid 4997] close(4) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6809, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4997] rmdir("./150/file0" [pid 6815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 6805] +++ exited with 0 +++ [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6805, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] rmdir("./150" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] mkdir("./151", 0777 [pid 4996] <... openat resumed>) = 3 [pid 6811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] fstat(3, [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] close(3 [pid 4996] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] lstat("./150/binderfs", [pid 4994] fstat(3, [pid 6815] <... write resumed>) = 2097152 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6816 attached [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6816 [pid 4996] unlink("./150/binderfs" [pid 4994] getdents64(3, [pid 6816] chdir("./151" [pid 6815] munmap(0x7f46b9f9b000, 2097152 [pid 6814] <... write resumed>) = 2097152 [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6816] <... chdir resumed>) = 0 [pid 6816] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6815] <... munmap resumed>) = 0 [pid 6814] munmap(0x7f46b9f9b000, 2097152 [pid 4996] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6816] <... prctl resumed>) = 0 [pid 6815] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6814] <... munmap resumed>) = 0 [pid 6816] setpgid(0, 0 [pid 6815] <... openat resumed>) = 4 [pid 6814] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6816] <... setpgid resumed>) = 0 [pid 6815] ioctl(4, LOOP_SET_FD, 3 [pid 6814] <... openat resumed>) = 4 [pid 6811] <... write resumed>) = 2097152 [pid 4994] lstat("./149/binderfs", [pid 6816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6814] ioctl(4, LOOP_SET_FD, 3 [pid 6811] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6816] <... openat resumed>) = 3 [pid 6811] <... munmap resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] unlink("./149/binderfs" [pid 6816] write(3, "1000", 4 [pid 6811] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] <... unlink resumed>) = 0 [pid 6816] <... write resumed>) = 4 [pid 6814] <... ioctl resumed>) = 0 [pid 6811] <... openat resumed>) = 4 [pid 4994] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6816] close(3 [pid 6814] close(3 [pid 6811] ioctl(4, LOOP_SET_FD, 3 [pid 6816] <... close resumed>) = 0 [pid 6814] <... close resumed>) = 0 [pid 4996] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6816] symlink("/dev/binderfs", "./binderfs" [pid 6814] mkdir("./file0", 0777 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6816] <... symlink resumed>) = 0 [pid 6815] <... ioctl resumed>) = 0 [pid 6814] <... mkdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6816] memfd_create("syzkaller", 0 [pid 6814] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6816] <... memfd_create resumed>) = 3 [pid 6815] close(3 [pid 4996] lstat("./150/file0", [pid 6816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6815] <... close resumed>) = 0 [pid 6816] <... mmap resumed>) = 0x7f46b9f9b000 [ 165.429656][ T6814] loop0: detected capacity change from 0 to 4096 [ 165.430145][ T6815] loop2: detected capacity change from 0 to 4096 [ 165.440331][ T6811] loop5: detected capacity change from 0 to 4096 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6816] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6815] mkdir("./file0", 0777 [pid 6811] <... ioctl resumed>) = 0 [pid 6811] close(3) = 0 [pid 6811] mkdir("./file0", 0777) = 0 [pid 6811] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./149/file0" [pid 4996] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6815] <... mkdir resumed>) = 0 [pid 6815] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./149" [pid 4996] getdents64(4, [pid 4994] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 4994] mkdir("./150", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6817 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 165.494647][ T6814] NILFS (loop0): invalid segment: Checksum error in segment payload [ 165.502680][ T6814] NILFS (loop0): trying rollback from an earlier position [ 165.520354][ T6815] NILFS (loop2): invalid segment: Checksum error in segment payload [ 165.534651][ T6811] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 4996] close(4./strace-static-x86_64: Process 6817 attached [pid 6817] chdir("./150") = 0 [pid 6817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6817] setpgid(0, 0) = 0 [pid 6817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./150/file0") = 0 [pid 4996] getdents64(3, [pid 6817] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 6817] write(3, "1000", 4) = 4 [pid 6816] <... write resumed>) = 2097152 [pid 4996] <... close resumed>) = 0 [pid 6817] close(3) = 0 [pid 6817] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4996] rmdir("./150" [pid 6817] memfd_create("syzkaller", 0) = 3 [pid 6817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] mkdir("./151", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 6816] munmap(0x7f46b9f9b000, 2097152 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6816] <... munmap resumed>) = 0 [pid 6816] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 165.546792][ T6815] NILFS (loop2): trying rollback from an earlier position [ 165.558514][ T6811] NILFS (loop5): trying rollback from an earlier position [ 165.568313][ T6815] NILFS (loop2): recovery complete [pid 6816] ioctl(4, LOOP_SET_FD, 3 [pid 6817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6819 ./strace-static-x86_64: Process 6819 attached [pid 6816] <... ioctl resumed>) = 0 [pid 6815] <... mount resumed>) = 0 [pid 6819] chdir("./151" [pid 6816] close(3 [pid 6815] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6816] <... close resumed>) = 0 [pid 6816] mkdir("./file0", 0777 [pid 6815] <... openat resumed>) = 3 [pid 6819] <... chdir resumed>) = 0 [pid 6816] <... mkdir resumed>) = 0 [pid 6819] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6815] chdir("./file0" [pid 6819] <... prctl resumed>) = 0 [pid 6816] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6815] <... chdir resumed>) = 0 [pid 6819] setpgid(0, 0) = 0 [pid 6815] ioctl(4, LOOP_CLR_FD [pid 6819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6815] <... ioctl resumed>) = 0 [pid 6819] <... openat resumed>) = 3 [pid 6815] close(4 [pid 6819] write(3, "1000", 4) = 4 [pid 6815] <... close resumed>) = 0 [ 165.599985][ T6816] loop4: detected capacity change from 0 to 4096 [ 165.602654][ T6814] NILFS (loop0): recovery complete [ 165.618290][ T6818] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.644252][ T6811] NILFS (loop5): recovery complete [pid 6819] close(3 [pid 6815] creat("./bus", 000 [pid 6819] <... close resumed>) = 0 [pid 6819] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6817] <... write resumed>) = 2097152 [pid 6819] memfd_create("syzkaller", 0 [pid 6817] munmap(0x7f46b9f9b000, 2097152 [pid 6814] <... mount resumed>) = 0 [pid 6814] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6817] <... munmap resumed>) = 0 [pid 6814] chdir("./file0") = 0 [pid 6814] ioctl(4, LOOP_CLR_FD) = 0 [pid 6814] close(4) = 0 [pid 6814] creat("./bus", 000 [pid 6815] <... creat resumed>) = 4 [pid 6815] unlink("./bus" [pid 6819] <... memfd_create resumed>) = 3 [pid 6819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6817] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6819] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6815] <... unlink resumed>) = 0 [pid 6817] <... openat resumed>) = 4 [pid 6815] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6811] <... mount resumed>) = 0 [pid 6811] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 165.650597][ T6816] NILFS (loop4): invalid segment: Checksum error in segment payload [ 165.660932][ T6820] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.671791][ T6816] NILFS (loop4): trying rollback from an earlier position [pid 6811] chdir("./file0" [pid 6817] ioctl(4, LOOP_SET_FD, 3 [pid 6811] <... chdir resumed>) = 0 [pid 6811] ioctl(4, LOOP_CLR_FD) = 0 [pid 6811] close(4) = 0 [pid 6811] creat("./bus", 000 [pid 6815] <... pwritev2 resumed>) = 65007 [pid 6815] exit_group(0) = ? [pid 6814] <... creat resumed>) = 4 [pid 6814] unlink("./bus" [pid 6817] <... ioctl resumed>) = 0 [pid 6817] close(3 [pid 6814] <... unlink resumed>) = 0 [pid 6817] <... close resumed>) = 0 [pid 6814] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6817] mkdir("./file0", 0777) = 0 [pid 6817] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6811] <... creat resumed>) = 4 [pid 6811] unlink("./bus") = 0 [ 165.691465][ T6821] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.710021][ T6817] loop1: detected capacity change from 0 to 4096 [pid 6811] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6815] +++ exited with 0 +++ [pid 6814] <... pwritev2 resumed>) = 65007 [pid 6814] exit_group(0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6815, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 6814] <... exit_group resumed>) = ? [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6811] <... pwritev2 resumed>) = 65007 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6811] exit_group(0 [pid 4995] lstat("./147/binderfs", [pid 6814] +++ exited with 0 +++ [pid 6811] <... exit_group resumed>) = ? [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./147/binderfs") = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6814, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./151/binderfs", [pid 6811] +++ exited with 0 +++ [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./151/binderfs") = 0 [ 165.769587][ T6817] NILFS (loop1): invalid segment: Checksum error in segment payload [ 165.796312][ T6816] NILFS (loop4): recovery complete [ 165.803558][ T6817] NILFS (loop1): trying rollback from an earlier position [pid 4993] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6819] <... write resumed>) = 2097152 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6811, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6816] <... mount resumed>) = 0 [pid 6819] munmap(0x7f46b9f9b000, 2097152 [pid 4998] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6816] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6819] <... munmap resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6816] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 6816] chdir("./file0" [pid 4998] fstat(3, [pid 6819] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6816] <... chdir resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6816] ioctl(4, LOOP_CLR_FD [pid 6819] <... openat resumed>) = 4 [pid 4998] getdents64(3, [pid 6816] <... ioctl resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6816] close(4 [pid 6819] ioctl(4, LOOP_SET_FD, 3 [pid 6816] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4998] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6816] creat("./bus", 000 [pid 4995] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./147/file0") = 0 [pid 6819] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./151/binderfs" [pid 4995] getdents64(3, [pid 4998] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./147" [pid 4998] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./148", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6823 [ 165.825144][ T6822] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 165.854476][ T6819] loop3: detected capacity change from 0 to 4096 [ 165.868918][ T6817] NILFS (loop1): recovery complete ./strace-static-x86_64: Process 6823 attached [pid 6819] close(3 [pid 6817] <... mount resumed>) = 0 [pid 6816] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 6823] chdir("./148" [pid 6816] unlink("./bus" [pid 4993] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6823] <... chdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4993] lstat("./151/file0", [pid 6823] <... prctl resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6823] setpgid(0, 0 [pid 4993] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6823] <... setpgid resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6823] <... openat resumed>) = 3 [pid 6817] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... openat resumed>) = 4 [pid 6823] write(3, "1000", 4) = 4 [pid 4993] fstat(4, [pid 6823] close(3 [pid 6817] <... openat resumed>) = 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6823] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 6823] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6823] <... symlink resumed>) = 0 [pid 6817] chdir("./file0" [pid 4993] getdents64(4, [pid 6823] memfd_create("syzkaller", 0 [pid 6817] <... chdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6823] <... memfd_create resumed>) = 3 [pid 4993] close(4 [pid 6823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6817] ioctl(4, LOOP_CLR_FD [pid 6816] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6823] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6816] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] rmdir("./151/file0" [pid 6817] <... ioctl resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6817] close(4 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6817] <... close resumed>) = 0 [pid 4993] close(3 [pid 6819] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6819] mkdir("./file0", 0777 [pid 4993] rmdir("./151" [pid 6819] <... mkdir resumed>) = 0 [pid 6817] creat("./bus", 000 [pid 4993] <... rmdir resumed>) = 0 [pid 6819] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] mkdir("./152", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6816] <... pwritev2 resumed>) = 65007 [pid 6816] exit_group(0 [pid 4998] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6825 [pid 6816] <... exit_group resumed>) = ? [ 165.883321][ T6824] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6825 attached [pid 4998] lstat("./151/file0", [pid 6825] chdir("./152" [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6825] <... chdir resumed>) = 0 [pid 6825] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6825] <... prctl resumed>) = 0 [pid 6817] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6825] setpgid(0, 0 [pid 6817] unlink("./bus" [pid 4998] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6825] <... setpgid resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 6825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6817] <... unlink resumed>) = 0 [pid 4998] fstat(4, [pid 6825] <... openat resumed>) = 3 [pid 6817] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6825] write(3, "1000", 4 [pid 6816] +++ exited with 0 +++ [pid 6825] <... write resumed>) = 4 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6816, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6825] close(3) = 0 [pid 6825] symlink("/dev/binderfs", "./binderfs" [pid 4997] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6825] <... symlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6825] memfd_create("syzkaller", 0 [pid 4997] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6825] <... memfd_create resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 6825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] fstat(3, [pid 6825] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4997] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4997] lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] unlink("./151/binderfs" [pid 4998] close(4 [pid 4997] <... unlink resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] rmdir("./151/file0" [pid 6817] <... pwritev2 resumed>) = 65007 [ 165.954927][ T6819] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6817] exit_group(0 [pid 4998] <... rmdir resumed>) = 0 [pid 6817] <... exit_group resumed>) = ? [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./151") = 0 [pid 4998] mkdir("./152", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 6825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6817] +++ exited with 0 +++ [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6826 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6817, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, ./strace-static-x86_64: Process 6826 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6826] chdir("./152" [pid 4994] getdents64(3, [pid 6826] <... chdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6826] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6823] <... write resumed>) = 2097152 [pid 4994] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6826] <... prctl resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6826] setpgid(0, 0 [ 165.998323][ T6819] NILFS (loop3): trying rollback from an earlier position [pid 4994] lstat("./150/binderfs", [pid 6826] <... setpgid resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6823] munmap(0x7f46b9f9b000, 2097152 [pid 4994] unlink("./150/binderfs" [pid 6826] <... openat resumed>) = 3 [pid 6823] <... munmap resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 6826] write(3, "1000", 4 [pid 4994] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6826] <... write resumed>) = 4 [pid 6826] close(3 [pid 6823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6826] <... close resumed>) = 0 [pid 6826] symlink("/dev/binderfs", "./binderfs" [pid 6823] <... openat resumed>) = 4 [pid 4997] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6826] <... symlink resumed>) = 0 [pid 6823] ioctl(4, LOOP_SET_FD, 3 [pid 6826] memfd_create("syzkaller", 0 [pid 6825] <... write resumed>) = 2097152 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6825] munmap(0x7f46b9f9b000, 2097152 [pid 4997] lstat("./151/file0", [pid 6826] <... memfd_create resumed>) = 3 [pid 6825] <... munmap resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6825] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6825] <... openat resumed>) = 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6825] ioctl(4, LOOP_SET_FD, 3 [pid 4997] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6826] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6823] <... ioctl resumed>) = 0 [pid 6819] <... mount resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = 0 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./151/file0") = 0 [pid 6823] close(3 [pid 6819] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(3, [pid 4994] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6823] <... close resumed>) = 0 [pid 6819] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6823] mkdir("./file0", 0777 [pid 6819] chdir("./file0" [pid 4997] close(3 [pid 4994] lstat("./150/file0", [pid 6823] <... mkdir resumed>) = 0 [pid 6819] <... chdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6823] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6819] ioctl(4, LOOP_CLR_FD [pid 4997] rmdir("./151" [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6819] <... ioctl resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [ 166.073611][ T6823] loop2: detected capacity change from 0 to 4096 [ 166.095663][ T6819] NILFS (loop3): recovery complete [ 166.104033][ T6825] loop0: detected capacity change from 0 to 4096 [ 166.105802][ T6827] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] mkdir("./152", 0777 [pid 6819] close(4 [pid 4997] <... mkdir resumed>) = 0 [pid 4994] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6819] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6825] <... ioctl resumed>) = 0 [pid 6819] creat("./bus", 000 [pid 4997] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6825] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 6825] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... openat resumed>) = 4 [pid 6825] mkdir("./file0", 0777 [pid 4997] close(3 [pid 4994] fstat(4, [pid 6826] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6825] <... mkdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6825] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6828 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 6819] <... creat resumed>) = 4 [pid 6819] unlink("./bus" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6819] <... unlink resumed>) = 0 [pid 4994] getdents64(4, ./strace-static-x86_64: Process 6828 attached [pid 6819] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6828] chdir("./152" [pid 4994] close(4 [pid 6828] <... chdir resumed>) = 0 [pid 6828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6828] setpgid(0, 0) = 0 [pid 6828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4994] <... close resumed>) = 0 [pid 6828] write(3, "1000", 4 [pid 4994] rmdir("./150/file0" [pid 6828] <... write resumed>) = 4 [pid 6826] <... write resumed>) = 2097152 [pid 6819] <... pwritev2 resumed>) = 65007 [pid 6828] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, [pid 6828] <... close resumed>) = 0 [pid 6819] exit_group(0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6828] symlink("/dev/binderfs", "./binderfs" [pid 6819] <... exit_group resumed>) = ? [pid 4994] close(3 [pid 6828] <... symlink resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 6828] memfd_create("syzkaller", 0 [pid 4994] rmdir("./150" [pid 6828] <... memfd_create resumed>) = 3 [ 166.137185][ T6823] NILFS (loop2): invalid segment: Checksum error in segment payload [ 166.152510][ T6823] NILFS (loop2): trying rollback from an earlier position [ 166.166704][ T6825] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6828] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] mkdir("./151", 0777 [pid 6826] munmap(0x7f46b9f9b000, 2097152 [pid 6819] +++ exited with 0 +++ [pid 4994] <... mkdir resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6819, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6826] <... munmap resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 3 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] fstat(3, [pid 4994] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 6826] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] getdents64(3, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6826] <... openat resumed>) = 4 [pid 6823] <... mount resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6826] ioctl(4, LOOP_SET_FD, 3 [pid 6823] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6830 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./151/binderfs") = 0 [pid 4996] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6830 attached [pid 6823] <... openat resumed>) = 3 [ 166.212898][ T6823] NILFS (loop2): recovery complete [ 166.220981][ T6825] NILFS (loop0): trying rollback from an earlier position [ 166.229762][ T6829] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.241516][ T6826] loop5: detected capacity change from 0 to 4096 [pid 6830] chdir("./151" [pid 6826] <... ioctl resumed>) = 0 [pid 6823] chdir("./file0" [pid 4996] <... umount2 resumed>) = 0 [pid 6830] <... chdir resumed>) = 0 [pid 6828] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6826] close(3 [pid 6825] <... mount resumed>) = 0 [pid 6823] <... chdir resumed>) = 0 [pid 6830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6830] setpgid(0, 0) = 0 [pid 6830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6830] write(3, "1000", 4) = 4 [pid 6830] close(3) = 0 [pid 6830] symlink("/dev/binderfs", "./binderfs" [pid 6826] <... close resumed>) = 0 [pid 6825] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6823] ioctl(4, LOOP_CLR_FD [pid 4996] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6830] <... symlink resumed>) = 0 [pid 6826] mkdir("./file0", 0777 [pid 6825] <... openat resumed>) = 3 [pid 6823] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6830] memfd_create("syzkaller", 0 [pid 6825] chdir("./file0" [pid 6823] close(4 [pid 4996] lstat("./151/file0", [pid 6830] <... memfd_create resumed>) = 3 [pid 6828] <... write resumed>) = 2097152 [pid 6825] <... chdir resumed>) = 0 [pid 6823] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6828] munmap(0x7f46b9f9b000, 2097152 [pid 6825] ioctl(4, LOOP_CLR_FD [pid 6823] creat("./bus", 000 [pid 4996] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6830] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6825] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6828] <... munmap resumed>) = 0 [pid 6825] close(4 [pid 6823] <... creat resumed>) = 4 [pid 4996] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6828] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6825] <... close resumed>) = 0 [pid 6823] unlink("./bus" [pid 4996] <... openat resumed>) = 4 [pid 6828] <... openat resumed>) = 4 [pid 6826] <... mkdir resumed>) = 0 [pid 6825] creat("./bus", 000 [pid 6823] <... unlink resumed>) = 0 [ 166.259909][ T6825] NILFS (loop0): recovery complete [ 166.267284][ T6831] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] fstat(4, [pid 6828] ioctl(4, LOOP_SET_FD, 3 [pid 6826] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6825] <... creat resumed>) = 4 [pid 6823] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6825] unlink("./bus" [pid 4996] getdents64(4, [pid 6825] <... unlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6828] <... ioctl resumed>) = 0 [pid 6825] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] getdents64(4, [pid 6828] close(3 [pid 6830] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 6828] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 6828] mkdir("./file0", 0777 [pid 4996] rmdir("./151/file0") = 0 [pid 6828] <... mkdir resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6828] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 166.325934][ T6828] loop4: detected capacity change from 0 to 4096 [ 166.354931][ T6826] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 4996] close(3 [pid 6825] <... pwritev2 resumed>) = 65007 [pid 6825] exit_group(0) = ? [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./151") = 0 [pid 4996] mkdir("./152", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6825] +++ exited with 0 +++ [pid 6823] <... pwritev2 resumed>) = 65007 [ 166.373907][ T6826] NILFS (loop5): trying rollback from an earlier position [ 166.390714][ T6828] NILFS (loop4): invalid segment: Checksum error in segment payload [ 166.407691][ T6828] NILFS (loop4): trying rollback from an earlier position [pid 4996] close(3 [pid 6830] <... write resumed>) = 2097152 [pid 6823] exit_group(0 [pid 4996] <... close resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6825, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6823] <... exit_group resumed>) = ? [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6830] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6830] <... munmap resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6833 [pid 4993] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6830] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6828] <... mount resumed>) = 0 [pid 6823] +++ exited with 0 +++ [pid 6830] <... openat resumed>) = 4 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6823, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6830] ioctl(4, LOOP_SET_FD, 3 [pid 4995] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 6833 attached [pid 6828] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] fstat(3, [pid 6833] chdir("./152" [pid 6828] <... openat resumed>) = 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6833] <... chdir resumed>) = 0 [pid 6828] chdir("./file0" [pid 4993] getdents64(3, [pid 6833] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6828] <... chdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6833] <... prctl resumed>) = 0 [pid 6828] ioctl(4, LOOP_CLR_FD [pid 4993] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6833] setpgid(0, 0 [pid 6828] <... ioctl resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6833] <... setpgid resumed>) = 0 [pid 6828] close(4 [pid 4993] lstat("./152/binderfs", [pid 6833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6828] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6833] <... openat resumed>) = 3 [pid 6828] creat("./bus", 000 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] unlink("./152/binderfs" [pid 6833] write(3, "1000", 4 [pid 6828] <... creat resumed>) = 4 [pid 4993] <... unlink resumed>) = 0 [pid 6833] <... write resumed>) = 4 [pid 6828] unlink("./bus" [pid 4993] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6833] close(3 [pid 6828] <... unlink resumed>) = 0 [pid 4995] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6833] <... close resumed>) = 0 [pid 6828] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6833] symlink("/dev/binderfs", "./binderfs" [pid 6830] <... ioctl resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6833] <... symlink resumed>) = 0 [pid 6833] memfd_create("syzkaller", 0 [pid 6828] <... pwritev2 resumed>) = 65007 [pid 4995] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6833] <... memfd_create resumed>) = 3 [pid 6828] exit_group(0 [pid 6833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6828] <... exit_group resumed>) = ? [pid 6833] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... openat resumed>) = 3 [pid 6830] close(3) = 0 [ 166.425943][ T6828] NILFS (loop4): recovery complete [ 166.441552][ T6832] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.446830][ T6830] loop1: detected capacity change from 0 to 4096 [ 166.467128][ T6826] NILFS (loop5): recovery complete [pid 4995] fstat(3, [pid 6830] mkdir("./file0", 0777 [pid 6826] <... mount resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6826] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] getdents64(3, [pid 6830] <... mkdir resumed>) = 0 [pid 6830] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6826] <... openat resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6826] chdir("./file0" [pid 4995] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6826] <... chdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6826] ioctl(4, LOOP_CLR_FD [pid 4995] lstat("./148/binderfs", [pid 6833] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6826] <... ioctl resumed>) = 0 [pid 4995] unlink("./148/binderfs" [pid 6828] +++ exited with 0 +++ [pid 6826] close(4 [pid 4995] <... unlink resumed>) = 0 [pid 6826] <... close resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6828, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6826] creat("./bus", 000 [pid 4995] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6826] <... creat resumed>) = 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6826] unlink("./bus" [pid 4997] lstat("./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./152/binderfs" [pid 6826] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 6826] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6833] <... write resumed>) = 2097152 [pid 6833] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6833] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 166.505825][ T6834] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.527859][ T6830] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6833] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6833] close(3) = 0 [pid 6833] mkdir("./file0", 0777) = 0 [pid 6833] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 6826] <... pwritev2 resumed>) = 65007 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6826] exit_group(0 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./152/file0" [pid 6826] <... exit_group resumed>) = ? [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 166.560996][ T6833] loop3: detected capacity change from 0 to 4096 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] close(3) = 0 [pid 6826] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 4995] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./152" [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6826, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4997] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4995] lstat("./148/file0", [pid 4998] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./152/file0") = 0 [pid 4997] getdents64(3, [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] mkdir("./153", 0777 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./152" [pid 4998] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... rmdir resumed>) = 0 [pid 4995] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] mkdir("./153", 0777 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4998] fstat(3, [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] close(3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] getdents64(3, [pid 4995] fstat(4, [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6835 [pid 4998] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(4, [pid 4993] close(3) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] lstat("./152/binderfs", [pid 4995] getdents64(4, [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 166.615106][ T6833] NILFS (loop3): invalid segment: Checksum error in segment payload [ 166.632847][ T6830] NILFS (loop1): trying rollback from an earlier position [ 166.638957][ T6833] NILFS (loop3): trying rollback from an earlier position [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6836 [pid 4998] unlink("./152/binderfs" [pid 4995] close(4./strace-static-x86_64: Process 6836 attached [pid 6836] chdir("./153") = 0 [pid 6836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6836] setpgid(0, 0) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] rmdir("./148/file0"./strace-static-x86_64: Process 6835 attached [pid 4998] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 6836] <... openat resumed>) = 3 [pid 6836] write(3, "1000", 4) = 4 [pid 6835] chdir("./153" [pid 6836] close(3 [pid 4995] getdents64(3, [pid 6836] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6836] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6835] <... chdir resumed>) = 0 [pid 4995] close(3 [pid 6836] memfd_create("syzkaller", 0 [pid 6835] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6836] <... memfd_create resumed>) = 3 [pid 6836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6835] <... prctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6835] setpgid(0, 0) = 0 [pid 4995] rmdir("./148") = 0 [pid 6835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6833] <... mount resumed>) = 0 [pid 4995] mkdir("./149", 0777 [pid 6835] write(3, "1000", 4 [pid 6833] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6835] <... write resumed>) = 4 [pid 6833] <... openat resumed>) = 3 [pid 6830] <... mount resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6830] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6835] close(3 [pid 6830] chdir("./file0" [pid 6833] chdir("./file0" [pid 6835] <... close resumed>) = 0 [pid 6830] <... chdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6835] symlink("/dev/binderfs", "./binderfs" [pid 6833] <... chdir resumed>) = 0 [pid 6830] ioctl(4, LOOP_CLR_FD) = 0 [pid 6830] close(4 [pid 4998] <... umount2 resumed>) = 0 [pid 6835] <... symlink resumed>) = 0 [pid 6833] ioctl(4, LOOP_CLR_FD [pid 6830] <... close resumed>) = 0 [pid 6833] <... ioctl resumed>) = 0 [pid 6830] creat("./bus", 000 [pid 4995] <... openat resumed>) = 3 [pid 6835] memfd_create("syzkaller", 0 [pid 6833] close(4 [pid 4998] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6835] <... memfd_create resumed>) = 3 [pid 6833] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] lstat("./152/file0", [pid 6835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6833] creat("./bus", 000 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6835] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./152/file0") = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6839 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6833] <... creat resumed>) = 4 [pid 4998] close(3 [pid 6833] unlink("./bus" [pid 4998] <... close resumed>) = 0 ./strace-static-x86_64: Process 6839 attached [pid 4998] rmdir("./152" [pid 6839] chdir("./149" [pid 6833] <... unlink resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 6839] <... chdir resumed>) = 0 [ 166.675957][ T6830] NILFS (loop1): recovery complete [ 166.678143][ T6833] NILFS (loop3): recovery complete [ 166.692243][ T6837] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 166.714893][ T6838] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6833] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] mkdir("./153", 0777 [pid 6839] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... mkdir resumed>) = 0 [pid 6839] <... prctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6839] setpgid(0, 0 [pid 4998] <... openat resumed>) = 3 [pid 6839] <... setpgid resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6839] <... openat resumed>) = 3 [pid 4998] close(3 [pid 6839] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 6839] <... write resumed>) = 4 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6839] close(3) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6840 [pid 6839] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6833] <... pwritev2 resumed>) = 65007 [pid 6839] memfd_create("syzkaller", 0 [pid 6833] exit_group(0 [pid 6839] <... memfd_create resumed>) = 3 [pid 6833] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 6840 attached [pid 6839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6839] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6830] <... creat resumed>) = 4 [pid 6830] unlink("./bus" [pid 6840] chdir("./153" [pid 6830] <... unlink resumed>) = 0 [pid 6830] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6840] <... chdir resumed>) = 0 [pid 6833] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6833, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, [pid 6840] <... prctl resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 6840] setpgid(0, 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6840] <... setpgid resumed>) = 0 [pid 4996] unlink("./152/binderfs" [pid 6840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6840] <... openat resumed>) = 3 [pid 6840] write(3, "1000", 4) = 4 [pid 6840] close(3) = 0 [pid 6840] symlink("/dev/binderfs", "./binderfs" [pid 6830] <... pwritev2 resumed>) = 65007 [pid 6840] <... symlink resumed>) = 0 [pid 6839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6830] exit_group(0 [pid 6836] <... write resumed>) = 2097152 [pid 6835] <... write resumed>) = 2097152 [pid 6830] <... exit_group resumed>) = ? [pid 6840] memfd_create("syzkaller", 0 [pid 6836] munmap(0x7f46b9f9b000, 2097152 [pid 6835] munmap(0x7f46b9f9b000, 2097152 [pid 6840] <... memfd_create resumed>) = 3 [pid 6836] <... munmap resumed>) = 0 [pid 6840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6835] <... munmap resumed>) = 0 [pid 6840] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6836] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6835] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6830] +++ exited with 0 +++ [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6830, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6835] <... openat resumed>) = 4 [pid 6836] <... openat resumed>) = 4 [pid 6835] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6836] ioctl(4, LOOP_SET_FD, 3 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./152/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./152") = 0 [pid 4996] mkdir("./153", 0777) = 0 [pid 6835] <... ioctl resumed>) = 0 [pid 4994] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6841 [pid 4994] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./151/binderfs" [pid 6836] <... ioctl resumed>) = 0 [pid 6835] close(3 [pid 4994] <... unlink resumed>) = 0 [pid 4994] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6836] close(3 [pid 6835] <... close resumed>) = 0 [pid 6836] <... close resumed>) = 0 [pid 6835] mkdir("./file0", 0777./strace-static-x86_64: Process 6841 attached [pid 6841] chdir("./153" [pid 6836] mkdir("./file0", 0777 [pid 6841] <... chdir resumed>) = 0 [pid 6841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6841] setpgid(0, 0 [pid 6836] <... mkdir resumed>) = 0 [pid 6841] <... setpgid resumed>) = 0 [pid 6841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6835] <... mkdir resumed>) = 0 [pid 6841] <... openat resumed>) = 3 [pid 6841] write(3, "1000", 4) = 4 [pid 6841] close(3) = 0 [pid 6835] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6841] symlink("/dev/binderfs", "./binderfs" [pid 6839] <... write resumed>) = 2097152 [pid 6841] <... symlink resumed>) = 0 [pid 6839] munmap(0x7f46b9f9b000, 2097152 [pid 6836] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6841] memfd_create("syzkaller", 0 [pid 6839] <... munmap resumed>) = 0 [pid 6841] <... memfd_create resumed>) = 3 [pid 6841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6839] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6841] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6839] <... openat resumed>) = 4 [ 166.866651][ T6835] loop4: detected capacity change from 0 to 4096 [ 166.873617][ T6836] loop0: detected capacity change from 0 to 4096 [pid 6839] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6839] <... ioctl resumed>) = 0 [pid 6839] close(3 [pid 4994] lstat("./151/file0", [pid 6839] <... close resumed>) = 0 [pid 6839] mkdir("./file0", 0777 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6839] <... mkdir resumed>) = 0 [pid 6839] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./151/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./151") = 0 [pid 4994] mkdir("./152", 0777 [ 166.925493][ T6839] loop2: detected capacity change from 0 to 4096 [ 166.951346][ T6835] NILFS (loop4): invalid segment: Checksum error in segment payload [ 166.961928][ T6836] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 6841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6842 ./strace-static-x86_64: Process 6842 attached [ 166.972496][ T6839] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6842] chdir("./152") = 0 [pid 6842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6842] setpgid(0, 0) = 0 [pid 6842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6842] write(3, "1000", 4) = 4 [pid 6842] close(3) = 0 [pid 6842] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6842] memfd_create("syzkaller", 0) = 3 [pid 6842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6840] <... write resumed>) = 2097152 [pid 6840] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6840] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6840] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6840] close(3) = 0 [pid 6840] mkdir("./file0", 0777 [pid 6841] <... write resumed>) = 2097152 [pid 6840] <... mkdir resumed>) = 0 [pid 6840] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6841] munmap(0x7f46b9f9b000, 2097152) = 0 [ 166.998914][ T6836] NILFS (loop0): trying rollback from an earlier position [ 167.008153][ T6835] NILFS (loop4): trying rollback from an earlier position [ 167.023797][ T6839] NILFS (loop2): trying rollback from an earlier position [ 167.036398][ T6840] loop5: detected capacity change from 0 to 4096 [pid 6842] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6841] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 167.067825][ T6836] NILFS (loop0): recovery complete [ 167.069394][ T6841] loop3: detected capacity change from 0 to 4096 [ 167.074365][ T6835] NILFS (loop4): recovery complete [ 167.088272][ T6840] NILFS (loop5): invalid segment: Checksum error in segment payload [ 167.089031][ T6839] NILFS (loop2): recovery complete [ 167.096661][ T6840] NILFS (loop5): trying rollback from an earlier position [pid 6841] ioctl(4, LOOP_SET_FD, 3 [pid 6836] <... mount resumed>) = 0 [pid 6836] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6836] chdir("./file0") = 0 [pid 6836] ioctl(4, LOOP_CLR_FD [pid 6835] <... mount resumed>) = 0 [pid 6836] <... ioctl resumed>) = 0 [pid 6835] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6841] <... ioctl resumed>) = 0 [pid 6836] close(4 [pid 6835] <... openat resumed>) = 3 [pid 6841] close(3) = 0 [pid 6841] mkdir("./file0", 0777) = 0 [pid 6841] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6842] <... write resumed>) = 2097152 [pid 6839] <... mount resumed>) = 0 [pid 6836] <... close resumed>) = 0 [pid 6835] chdir("./file0" [pid 6842] munmap(0x7f46b9f9b000, 2097152 [pid 6839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6836] creat("./bus", 000 [pid 6835] <... chdir resumed>) = 0 [pid 6842] <... munmap resumed>) = 0 [pid 6839] <... openat resumed>) = 3 [pid 6836] <... creat resumed>) = 4 [pid 6835] ioctl(4, LOOP_CLR_FD [ 167.108773][ T6843] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.120010][ T6840] NILFS (loop5): recovery complete [ 167.129620][ T6844] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.139660][ T6845] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6842] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6839] chdir("./file0" [pid 6836] unlink("./bus" [pid 6835] <... ioctl resumed>) = 0 [pid 6842] <... openat resumed>) = 4 [pid 6835] close(4 [pid 6842] ioctl(4, LOOP_SET_FD, 3 [pid 6840] <... mount resumed>) = 0 [pid 6839] <... chdir resumed>) = 0 [pid 6836] <... unlink resumed>) = 0 [pid 6835] <... close resumed>) = 0 [pid 6840] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6840] chdir("./file0") = 0 [pid 6840] ioctl(4, LOOP_CLR_FD) = 0 [pid 6839] ioctl(4, LOOP_CLR_FD [pid 6836] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6835] creat("./bus", 000 [pid 6840] close(4) = 0 [pid 6839] <... ioctl resumed>) = 0 [ 167.161261][ T6841] NILFS (loop3): invalid segment: Checksum error in segment payload [ 167.170343][ T6841] NILFS (loop3): trying rollback from an earlier position [ 167.172348][ T6846] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.188982][ T6842] loop1: detected capacity change from 0 to 4096 [pid 6839] close(4 [pid 6840] creat("./bus", 000 [pid 6839] <... close resumed>) = 0 [pid 6835] <... creat resumed>) = 4 [pid 6839] creat("./bus", 000 [pid 6835] unlink("./bus") = 0 [pid 6835] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6842] <... ioctl resumed>) = 0 [pid 6840] <... creat resumed>) = 4 [pid 6840] unlink("./bus" [pid 6842] close(3) = 0 [pid 6842] mkdir("./file0", 0777 [pid 6839] <... creat resumed>) = 4 [pid 6842] <... mkdir resumed>) = 0 [pid 6842] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6839] unlink("./bus" [pid 6836] <... pwritev2 resumed>) = 65007 [pid 6839] <... unlink resumed>) = 0 [pid 6836] exit_group(0 [pid 6840] <... unlink resumed>) = 0 [pid 6839] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6836] <... exit_group resumed>) = ? [pid 6835] <... pwritev2 resumed>) = 65007 [ 167.214685][ T6841] NILFS (loop3): recovery complete [pid 6840] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6841] <... mount resumed>) = 0 [pid 6839] <... pwritev2 resumed>) = 65007 [pid 6836] +++ exited with 0 +++ [pid 6835] exit_group(0 [pid 6839] exit_group(0 [pid 6835] <... exit_group resumed>) = ? [pid 6841] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6839] <... exit_group resumed>) = ? [pid 6835] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6836, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6839] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6835, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4993] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6839, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4993] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6841] <... openat resumed>) = 3 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 6841] chdir("./file0" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6841] <... chdir resumed>) = 0 [pid 4995] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 6841] ioctl(4, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6841] <... ioctl resumed>) = 0 [pid 4997] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6841] close(4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 167.258082][ T6847] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.285197][ T6842] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 4995] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6841] <... close resumed>) = 0 [pid 6840] <... pwritev2 resumed>) = 65007 [pid 4997] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, [pid 4993] lstat("./153/binderfs", [pid 6841] creat("./bus", 000 [pid 6840] exit_group(0 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6840] <... exit_group resumed>) = ? [pid 4997] fstat(3, [pid 4995] getdents64(3, [pid 4993] unlink("./153/binderfs" [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... unlink resumed>) = 0 [pid 4997] getdents64(3, [pid 4995] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./149/binderfs", [pid 6841] <... creat resumed>) = 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6841] unlink("./bus" [pid 6840] +++ exited with 0 +++ [pid 4997] lstat("./153/binderfs", [pid 4995] unlink("./149/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4997] unlink("./153/binderfs" [ 167.304513][ T6842] NILFS (loop1): trying rollback from an earlier position [pid 4995] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6840, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 6841] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4997] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6842] <... mount resumed>) = 0 [pid 6841] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6842] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6842] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6842] chdir("./file0" [pid 4998] <... openat resumed>) = 3 [pid 4993] lstat("./153/file0", [pid 6842] <... chdir resumed>) = 0 [pid 4998] fstat(3, [pid 6842] ioctl(4, LOOP_CLR_FD [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 6842] <... ioctl resumed>) = 0 [pid 6842] close(4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6842] <... close resumed>) = 0 [pid 6841] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 6842] creat("./bus", 000 [pid 6841] exit_group(0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 167.349887][ T6842] NILFS (loop1): recovery complete [ 167.357351][ T6848] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6841] <... exit_group resumed>) = ? [pid 4998] lstat("./153/binderfs", [pid 4993] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4998] unlink("./153/binderfs" [pid 4993] fstat(4, [pid 6842] <... creat resumed>) = 4 [pid 6841] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6841, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4998] <... unlink resumed>) = 0 [pid 4993] getdents64(4, [pid 6842] unlink("./bus" [pid 4998] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... restart_syscall resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6842] <... unlink resumed>) = 0 [pid 4995] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 6842] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./149/file0", [pid 4996] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, [pid 4993] close(4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./153/file0" [pid 4996] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./153/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./153/binderfs") = 0 [pid 4995] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... rmdir resumed>) = 0 [pid 4996] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6842] <... pwritev2 resumed>) = 65007 [pid 4995] <... openat resumed>) = 4 [pid 4993] getdents64(3, [pid 6842] exit_group(0 [pid 4997] <... umount2 resumed>) = 0 [pid 4995] fstat(4, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6842] <... exit_group resumed>) = ? [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 4997] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./153/file0", [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... close resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4997] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] rmdir("./153" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(4 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4995] rmdir("./149/file0" [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... rmdir resumed>) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./153/file0" [pid 4995] getdents64(3, [pid 4993] mkdir("./154", 0777 [pid 4997] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./153" [pid 4993] <... mkdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] mkdir("./154", 0777 [pid 4995] close(3 [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] rmdir("./149" [pid 4998] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6849 [pid 4995] mkdir("./150", 0777 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] lstat("./153/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4998] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] close(3 [pid 4998] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 4 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] <... close resumed>) = 0 [pid 4998] fstat(4, [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] close(3 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] close(4 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6849 attached [pid 4998] <... close resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6850 [pid 6849] chdir("./154" [pid 4998] rmdir("./153/file0" [pid 6849] <... chdir resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 6849] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] getdents64(3, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6851 [pid 6849] <... prctl resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6849] setpgid(0, 0 [pid 4998] close(3 [pid 6849] <... setpgid resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 6849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] rmdir("./153" [pid 6849] <... openat resumed>) = 3 [pid 4998] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6851 attached [pid 6849] write(3, "1000", 4 [pid 4998] mkdir("./154", 0777 [pid 6851] chdir("./150" [pid 6849] <... write resumed>) = 4 [pid 4998] <... mkdir resumed>) = 0 [pid 6851] <... chdir resumed>) = 0 [pid 6849] close(3 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6851] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6849] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 6851] <... prctl resumed>) = 0 [pid 6849] symlink("/dev/binderfs", "./binderfs" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6851] setpgid(0, 0 [pid 6849] <... symlink resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6851] <... setpgid resumed>) = 0 [pid 6849] memfd_create("syzkaller", 0 [pid 4998] close(3 [pid 6851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6849] <... memfd_create resumed>) = 3 [pid 4998] <... close resumed>) = 0 [pid 6851] <... openat resumed>) = 3 [pid 6849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6850 attached [pid 6851] write(3, "1000", 4 [pid 6849] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6842] +++ exited with 0 +++ [pid 6851] <... write resumed>) = 4 [pid 6850] chdir("./154" [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6852 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6842, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6851] close(3 [pid 6850] <... chdir resumed>) = 0 [pid 4996] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 6851] <... close resumed>) = 0 [pid 6850] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... restart_syscall resumed>) = 0 [pid 6851] symlink("/dev/binderfs", "./binderfs" [pid 6850] <... prctl resumed>) = 0 [pid 6851] <... symlink resumed>) = 0 [pid 6850] setpgid(0, 0 [pid 6851] memfd_create("syzkaller", 0 [pid 6850] <... setpgid resumed>) = 0 [pid 4994] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6851] <... memfd_create resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6852 attached [pid 6851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6852] chdir("./154" [pid 6851] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6850] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 6852] <... chdir resumed>) = 0 [pid 6849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] fstat(3, [pid 6852] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6850] write(3, "1000", 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6852] <... prctl resumed>) = 0 [pid 4994] getdents64(3, [pid 6852] setpgid(0, 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6852] <... setpgid resumed>) = 0 [pid 4994] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6852] <... openat resumed>) = 3 [pid 4994] lstat("./152/binderfs", [pid 6852] write(3, "1000", 4 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6852] <... write resumed>) = 4 [pid 4994] unlink("./152/binderfs" [pid 6852] close(3 [pid 4994] <... unlink resumed>) = 0 [pid 6852] <... close resumed>) = 0 [pid 4994] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6852] symlink("/dev/binderfs", "./binderfs" [pid 6850] <... write resumed>) = 4 [pid 4996] lstat("./153/file0", [pid 6852] <... symlink resumed>) = 0 [pid 6852] memfd_create("syzkaller", 0) = 3 [pid 6852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6850] close(3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6850] <... close resumed>) = 0 [pid 6850] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6850] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6850] memfd_create("syzkaller", 0 [pid 4996] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6850] <... memfd_create resumed>) = 3 [pid 4996] fstat(4, [pid 6850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6851] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./153/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./153") = 0 [pid 4996] mkdir("./154", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6852] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6849] <... write resumed>) = 2097152 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6850] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6849] munmap(0x7f46b9f9b000, 2097152 [pid 4996] close(3 [pid 6849] <... munmap resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 6849] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6851] <... write resumed>) = 2097152 [pid 6849] <... openat resumed>) = 4 [pid 6849] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6853 [pid 4994] close(4) = 0 [pid 4994] rmdir("./152/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./152") = 0 [pid 4994] mkdir("./153", 0777) = 0 ./strace-static-x86_64: Process 6853 attached [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6853] chdir("./154" [pid 6849] <... ioctl resumed>) = 0 [pid 6853] <... chdir resumed>) = 0 [pid 6849] close(3 [pid 4994] <... openat resumed>) = 3 [pid 6853] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6849] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6853] <... prctl resumed>) = 0 [pid 6850] <... write resumed>) = 2097152 [pid 6849] mkdir("./file0", 0777 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6851] munmap(0x7f46b9f9b000, 2097152 [pid 6853] setpgid(0, 0 [pid 6850] munmap(0x7f46b9f9b000, 2097152 [pid 6849] <... mkdir resumed>) = 0 [pid 4994] close(3 [pid 6853] <... setpgid resumed>) = 0 [pid 6852] <... write resumed>) = 2097152 [pid 6851] <... munmap resumed>) = 0 [pid 6850] <... munmap resumed>) = 0 [pid 6849] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6852] munmap(0x7f46b9f9b000, 2097152 [pid 6851] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6850] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6853] <... openat resumed>) = 3 [pid 6852] <... munmap resumed>) = 0 [pid 6851] <... openat resumed>) = 4 [pid 6850] <... openat resumed>) = 4 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6854 [ 167.651232][ T6849] loop4: detected capacity change from 0 to 4096 [ 167.688938][ T6849] NILFS (loop4): invalid segment: Checksum error in segment payload ./strace-static-x86_64: Process 6854 attached [pid 6854] chdir("./153") = 0 [pid 6854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6853] write(3, "1000", 4 [pid 6852] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6851] ioctl(4, LOOP_SET_FD, 3 [pid 6850] ioctl(4, LOOP_SET_FD, 3 [pid 6853] <... write resumed>) = 4 [pid 6852] <... openat resumed>) = 4 [pid 6854] setpgid(0, 0) = 0 [pid 6854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6854] write(3, "1000", 4) = 4 [pid 6854] close(3) = 0 [pid 6854] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6854] memfd_create("syzkaller", 0) = 3 [pid 6854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6850] <... ioctl resumed>) = 0 [pid 6853] close(3 [pid 6852] ioctl(4, LOOP_SET_FD, 3 [pid 6851] <... ioctl resumed>) = 0 [pid 6850] close(3 [pid 6853] <... close resumed>) = 0 [pid 6852] <... ioctl resumed>) = 0 [pid 6851] close(3 [pid 6850] <... close resumed>) = 0 [pid 6853] symlink("/dev/binderfs", "./binderfs" [pid 6852] close(3 [pid 6851] <... close resumed>) = 0 [pid 6850] mkdir("./file0", 0777 [pid 6853] <... symlink resumed>) = 0 [pid 6851] mkdir("./file0", 0777 [pid 6853] memfd_create("syzkaller", 0 [pid 6852] <... close resumed>) = 0 [pid 6850] <... mkdir resumed>) = 0 [pid 6853] <... memfd_create resumed>) = 3 [pid 6852] mkdir("./file0", 0777 [pid 6851] <... mkdir resumed>) = 0 [pid 6850] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6852] <... mkdir resumed>) = 0 [pid 6853] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6852] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 167.698939][ T6849] NILFS (loop4): trying rollback from an earlier position [ 167.709259][ T6851] loop2: detected capacity change from 0 to 4096 [ 167.715940][ T6850] loop0: detected capacity change from 0 to 4096 [ 167.724473][ T6852] loop5: detected capacity change from 0 to 4096 [ 167.742735][ T6849] NILFS (loop4): recovery complete [pid 6851] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6854] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6849] <... mount resumed>) = 0 [pid 6849] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6849] chdir("./file0") = 0 [pid 6849] ioctl(4, LOOP_CLR_FD) = 0 [pid 6849] close(4) = 0 [ 167.759004][ T6851] NILFS (loop2): invalid segment: Checksum error in segment payload [ 167.768184][ T6850] NILFS (loop0): invalid segment: Checksum error in segment payload [ 167.776561][ T6852] NILFS (loop5): invalid segment: Checksum error in segment payload [ 167.784819][ T6855] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.796073][ T6851] NILFS (loop2): trying rollback from an earlier position [pid 6849] creat("./bus", 000) = 4 [pid 6849] unlink("./bus" [pid 6853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6849] <... unlink resumed>) = 0 [pid 6849] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 6849] exit_group(0) = ? [ 167.803283][ T6850] NILFS (loop0): trying rollback from an earlier position [ 167.811099][ T6852] NILFS (loop5): trying rollback from an earlier position [pid 6849] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6849, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6853] <... write resumed>) = 2097152 [pid 6850] <... mount resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6854] <... write resumed>) = 2097152 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6854] munmap(0x7f46b9f9b000, 2097152 [pid 6850] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6854] <... munmap resumed>) = 0 [pid 6852] <... mount resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./154/binderfs", [pid 6854] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6854] <... openat resumed>) = 4 [pid 4997] unlink("./154/binderfs" [ 167.855900][ T6851] NILFS (loop2): recovery complete [ 167.864780][ T6850] NILFS (loop0): recovery complete [ 167.870167][ T6852] NILFS (loop5): recovery complete [ 167.878340][ T6857] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.890670][ T6858] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6854] ioctl(4, LOOP_SET_FD, 3 [pid 4997] <... unlink resumed>) = 0 [pid 6853] munmap(0x7f46b9f9b000, 2097152 [pid 6852] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6850] <... openat resumed>) = 3 [pid 6853] <... munmap resumed>) = 0 [pid 6852] <... openat resumed>) = 3 [pid 6850] chdir("./file0" [pid 6852] chdir("./file0" [pid 6850] <... chdir resumed>) = 0 [pid 6852] <... chdir resumed>) = 0 [pid 6850] ioctl(4, LOOP_CLR_FD [pid 6852] ioctl(4, LOOP_CLR_FD [pid 6850] <... ioctl resumed>) = 0 [pid 6852] <... ioctl resumed>) = 0 [pid 6850] close(4 [pid 6853] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6852] close(4 [pid 6850] <... close resumed>) = 0 [pid 6853] <... openat resumed>) = 4 [pid 6852] <... close resumed>) = 0 [pid 6850] creat("./bus", 000 [pid 6853] ioctl(4, LOOP_SET_FD, 3 [pid 6852] creat("./bus", 000 [pid 6851] <... mount resumed>) = 0 [pid 6850] <... creat resumed>) = 4 [pid 4997] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6854] <... ioctl resumed>) = 0 [pid 6853] <... ioctl resumed>) = 0 [pid 6851] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6850] unlink("./bus" [pid 6852] <... creat resumed>) = 4 [pid 6854] close(3 [pid 6853] close(3 [pid 6852] unlink("./bus" [pid 6851] <... openat resumed>) = 3 [pid 6850] <... unlink resumed>) = 0 [pid 6854] <... close resumed>) = 0 [pid 6853] <... close resumed>) = 0 [pid 6851] chdir("./file0" [pid 6850] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6854] mkdir("./file0", 0777 [pid 6853] mkdir("./file0", 0777 [pid 6852] <... unlink resumed>) = 0 [pid 6851] <... chdir resumed>) = 0 [pid 6853] <... mkdir resumed>) = 0 [pid 6852] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6851] ioctl(4, LOOP_CLR_FD [pid 6854] <... mkdir resumed>) = 0 [pid 6853] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6851] <... ioctl resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 6854] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6851] close(4 [pid 6850] <... pwritev2 resumed>) = 65007 [pid 6851] <... close resumed>) = 0 [ 167.899936][ T6854] loop1: detected capacity change from 0 to 4096 [ 167.908679][ T6856] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 167.920000][ T6853] loop3: detected capacity change from 0 to 4096 [pid 6850] exit_group(0 [pid 6851] creat("./bus", 000 [pid 6850] <... exit_group resumed>) = ? [pid 4997] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./154/file0", [pid 6852] <... pwritev2 resumed>) = 65007 [pid 6850] +++ exited with 0 +++ [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6851] <... creat resumed>) = 4 [pid 4997] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6852] exit_group(0 [pid 6851] unlink("./bus" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6850, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=3 /* 0.03 s */} --- [pid 6852] <... exit_group resumed>) = ? [pid 4997] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6851] <... unlink resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4993] <... restart_syscall resumed>) = 0 [pid 6851] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4993] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(4, [pid 4993] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4997] close(4 [pid 4993] fstat(3, [pid 4997] <... close resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] rmdir("./154/file0" [pid 4993] getdents64(3, [pid 4997] <... rmdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(3, [pid 4993] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(3 [pid 4993] lstat("./154/binderfs", [pid 4997] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] rmdir("./154" [pid 4993] unlink("./154/binderfs" [pid 4997] <... rmdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4997] mkdir("./155", 0777 [pid 4993] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6859 ./strace-static-x86_64: Process 6859 attached [pid 6859] chdir("./155") = 0 [pid 6859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6852] +++ exited with 0 +++ [pid 6851] <... pwritev2 resumed>) = 65007 [pid 6851] exit_group(0) = ? [pid 6859] setpgid(0, 0) = 0 [pid 6859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6852, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6851] +++ exited with 0 +++ [pid 6859] <... openat resumed>) = 3 [pid 6859] write(3, "1000", 4 [pid 4998] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6851, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 6859] <... write resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6859] close(3 [pid 4998] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6859] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6859] symlink("/dev/binderfs", "./binderfs" [pid 4998] fstat(3, [pid 4995] <... openat resumed>) = 3 [pid 6859] <... symlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(3, [pid 6859] memfd_create("syzkaller", 0 [pid 4998] getdents64(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 167.964886][ T6853] NILFS (loop3): invalid segment: Checksum error in segment payload [ 167.989302][ T6854] NILFS (loop1): invalid segment: Checksum error in segment payload [ 167.997913][ T6853] NILFS (loop3): trying rollback from an earlier position [ 167.999909][ T6854] NILFS (loop1): trying rollback from an earlier position [pid 6859] <... memfd_create resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] getdents64(3, [pid 6859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6859] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./154/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] lstat("./150/binderfs", [pid 4998] unlink("./154/binderfs" [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4995] unlink("./150/binderfs" [pid 4998] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... unlink resumed>) = 0 [pid 4995] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 4995] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./150/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./150/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 168.061053][ T6853] NILFS (loop3): recovery complete [pid 4995] close(3 [pid 6859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... close resumed>) = 0 [pid 4993] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./150") = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] mkdir("./151", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] lstat("./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [ 168.103734][ T6854] NILFS (loop1): recovery complete [pid 4995] <... openat resumed>) = 3 [pid 4993] fstat(4, [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4993] getdents64(4, [pid 6853] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6853] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] fstat(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] getdents64(4, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6853] <... openat resumed>) = 3 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 6853] chdir("./file0" [pid 4998] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./154/file0" [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6862 [pid 4993] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 6853] <... chdir resumed>) = 0 [pid 4998] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 6853] ioctl(4, LOOP_CLR_FD [pid 4998] <... close resumed>) = 0 [pid 4993] rmdir("./154/file0"./strace-static-x86_64: Process 6862 attached [pid 6854] <... mount resumed>) = 0 [pid 6853] <... ioctl resumed>) = 0 [pid 4998] rmdir("./154" [pid 4993] <... rmdir resumed>) = 0 [pid 6862] chdir("./151" [pid 6854] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6853] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 6854] <... openat resumed>) = 3 [pid 6853] <... close resumed>) = 0 [pid 4998] mkdir("./155", 0777 [pid 6854] chdir("./file0" [pid 6853] creat("./bus", 000 [pid 4998] <... mkdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6854] <... chdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6854] ioctl(4, LOOP_CLR_FD [pid 4998] <... openat resumed>) = 3 [pid 4993] close(3 [pid 6854] <... ioctl resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6862] <... chdir resumed>) = 0 [pid 6854] close(4 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... close resumed>) = 0 [pid 6862] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6854] <... close resumed>) = 0 [pid 4998] close(3 [pid 6854] creat("./bus", 000 [pid 4998] <... close resumed>) = 0 [pid 4993] rmdir("./154" [pid 6862] <... prctl resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6862] setpgid(0, 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6862] <... setpgid resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6863 [pid 4993] mkdir("./155", 0777./strace-static-x86_64: Process 6863 attached [pid 6863] chdir("./155" [pid 6862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6863] <... chdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 6862] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6862] write(3, "1000", 4 [pid 6863] <... prctl resumed>) = 0 [pid 6863] setpgid(0, 0 [pid 4993] <... openat resumed>) = 3 [pid 6862] <... write resumed>) = 4 [pid 6863] <... setpgid resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6862] close(3 [pid 6863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6862] <... close resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6863] <... openat resumed>) = 3 [pid 6862] symlink("/dev/binderfs", "./binderfs" [pid 6853] <... creat resumed>) = 4 [pid 6863] write(3, "1000", 4 [pid 6853] unlink("./bus" [pid 6863] <... write resumed>) = 4 [pid 4993] close(3 [pid 6863] close(3 [pid 6862] <... symlink resumed>) = 0 [pid 6863] <... close resumed>) = 0 [pid 6863] symlink("/dev/binderfs", "./binderfs" [pid 6862] memfd_create("syzkaller", 0 [pid 6853] <... unlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6863] <... symlink resumed>) = 0 [pid 6862] <... memfd_create resumed>) = 3 [pid 6859] <... write resumed>) = 2097152 [pid 6853] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6863] memfd_create("syzkaller", 0) = 3 [pid 6863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6864 [pid 6862] <... mmap resumed>) = 0x7f46b9f9b000 [ 168.123996][ T6860] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.149439][ T6861] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6859] munmap(0x7f46b9f9b000, 2097152 [pid 6854] <... creat resumed>) = 4 [pid 6854] unlink("./bus" [pid 6859] <... munmap resumed>) = 0 [pid 6854] <... unlink resumed>) = 0 [pid 6854] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 6864 attached [pid 6853] <... pwritev2 resumed>) = 65007 [pid 6859] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6853] exit_group(0 [pid 6864] chdir("./155" [pid 6859] ioctl(4, LOOP_SET_FD, 3 [pid 6864] <... chdir resumed>) = 0 [pid 6862] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6859] <... ioctl resumed>) = 0 [pid 6853] <... exit_group resumed>) = ? [pid 6864] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6854] <... pwritev2 resumed>) = 65007 [pid 6854] exit_group(0) = ? [pid 6864] <... prctl resumed>) = 0 [pid 6864] setpgid(0, 0) = 0 [pid 6864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6864] write(3, "1000", 4) = 4 [pid 6864] close(3) = 0 [pid 6853] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6853, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 6864] symlink("/dev/binderfs", "./binderfs" [pid 6854] +++ exited with 0 +++ [pid 6859] close(3) = 0 [pid 6859] mkdir("./file0", 0777 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6854, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6864] <... symlink resumed>) = 0 [pid 4996] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6864] memfd_create("syzkaller", 0 [pid 6859] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6864] <... memfd_create resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 6864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6859] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] fstat(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6864] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... openat resumed>) = 3 [pid 4996] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] lstat("./154/binderfs", [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] getdents64(3, [pid 4996] unlink("./154/binderfs") = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./153/binderfs") = 0 [ 168.224295][ T6859] loop4: detected capacity change from 0 to 4096 [pid 4994] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6862] <... write resumed>) = 2097152 [pid 6864] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6862] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6862] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6862] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 4996] <... umount2 resumed>) = 0 [ 168.286284][ T6859] NILFS (loop4): invalid segment: Checksum error in segment payload [ 168.314429][ T6862] loop2: detected capacity change from 0 to 4096 [pid 6862] close(3) = 0 [pid 6863] <... write resumed>) = 2097152 [pid 6862] mkdir("./file0", 0777) = 0 [pid 6862] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6863] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6863] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [ 168.330207][ T6859] NILFS (loop4): trying rollback from an earlier position [pid 6863] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... umount2 resumed>) = 0 [pid 6864] <... write resumed>) = 2097152 [pid 4996] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] fstat(4, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] lstat("./153/file0", [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 168.357803][ T6863] loop5: detected capacity change from 0 to 4096 [pid 6864] munmap(0x7f46b9f9b000, 2097152 [pid 4996] close(4 [pid 6863] <... ioctl resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6863] close(3 [pid 6864] <... munmap resumed>) = 0 [pid 6863] <... close resumed>) = 0 [pid 6864] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6863] mkdir("./file0", 0777 [pid 6864] <... openat resumed>) = 4 [pid 6863] <... mkdir resumed>) = 0 [pid 6864] ioctl(4, LOOP_SET_FD, 3 [pid 6863] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 6864] <... ioctl resumed>) = 0 [pid 6864] close(3) = 0 [pid 6864] mkdir("./file0", 0777) = 0 [pid 4996] rmdir("./154/file0" [pid 4994] fstat(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4994] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 4996] close(3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./153/file0" [pid 4996] rmdir("./154" [pid 4994] <... rmdir resumed>) = 0 [pid 6864] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] mkdir("./155", 0777 [pid 4994] close(3) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] rmdir("./153" [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] mkdir("./154", 0777 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [ 168.404649][ T6864] loop0: detected capacity change from 0 to 4096 [ 168.412359][ T6859] NILFS (loop4): recovery complete [ 168.416805][ T6862] NILFS (loop2): invalid segment: Checksum error in segment payload [ 168.429975][ T6863] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 4994] <... mkdir resumed>) = 0 [pid 4996] close(3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 6859] <... mount resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6859] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6866 [pid 4994] close(3./strace-static-x86_64: Process 6866 attached [pid 6866] chdir("./155") = 0 [pid 6859] <... openat resumed>) = 3 [pid 6866] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... close resumed>) = 0 [pid 6859] chdir("./file0" [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6866] <... prctl resumed>) = 0 [pid 6866] setpgid(0, 0) = 0 [pid 6866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6859] <... chdir resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6867 [pid 6859] ioctl(4, LOOP_CLR_FD) = 0 [pid 6859] close(4) = 0 [pid 6859] creat("./bus", 000 [pid 6866] <... openat resumed>) = 3 [pid 6866] write(3, "1000", 4) = 4 [pid 6866] close(3) = 0 [pid 6866] symlink("/dev/binderfs", "./binderfs") = 0 [ 168.453942][ T6862] NILFS (loop2): trying rollback from an earlier position [ 168.457499][ T6865] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.477500][ T6863] NILFS (loop5): trying rollback from an earlier position [ 168.487378][ T6864] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6866] memfd_create("syzkaller", 0./strace-static-x86_64: Process 6867 attached ) = 3 [pid 6866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6867] chdir("./154") = 0 [pid 6867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6867] setpgid(0, 0) = 0 [pid 6867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6867] write(3, "1000", 4) = 4 [pid 6867] close(3 [pid 6859] <... creat resumed>) = 4 [pid 6867] <... close resumed>) = 0 [pid 6859] unlink("./bus" [pid 6867] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6859] <... unlink resumed>) = 0 [pid 6867] memfd_create("syzkaller", 0 [pid 6859] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6866] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6867] <... memfd_create resumed>) = 3 [pid 6867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6862] <... mount resumed>) = 0 [pid 6867] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6862] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 168.507534][ T6864] NILFS (loop0): trying rollback from an earlier position [ 168.521647][ T6862] NILFS (loop2): recovery complete [ 168.538084][ T6863] NILFS (loop5): recovery complete [ 168.545871][ T6868] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6863] <... mount resumed>) = 0 [pid 6862] chdir("./file0" [pid 6859] <... pwritev2 resumed>) = 65007 [pid 6863] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6862] <... chdir resumed>) = 0 [pid 6859] exit_group(0 [pid 6863] chdir("./file0") = 0 [pid 6863] ioctl(4, LOOP_CLR_FD) = 0 [pid 6863] close(4) = 0 [pid 6863] creat("./bus", 000 [pid 6862] ioctl(4, LOOP_CLR_FD [pid 6859] <... exit_group resumed>) = ? [ 168.575719][ T6869] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 168.604404][ T6864] NILFS (loop0): recovery complete [pid 6862] <... ioctl resumed>) = 0 [pid 6862] close(4) = 0 [pid 6862] creat("./bus", 000) = 4 [pid 6862] unlink("./bus" [pid 6864] <... mount resumed>) = 0 [pid 6862] <... unlink resumed>) = 0 [pid 6862] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6864] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6864] chdir("./file0") = 0 [pid 6864] ioctl(4, LOOP_CLR_FD) = 0 [pid 6864] close(4) = 0 [pid 6864] creat("./bus", 000 [pid 6863] <... creat resumed>) = 4 [pid 6863] unlink("./bus" [pid 6859] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6859, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6863] <... unlink resumed>) = 0 [pid 6863] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./155/binderfs") = 0 [pid 6862] <... pwritev2 resumed>) = 65007 [ 168.616389][ T6870] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6862] exit_group(0 [pid 6863] <... pwritev2 resumed>) = 65007 [pid 6862] <... exit_group resumed>) = ? [pid 6863] exit_group(0) = ? [pid 6863] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6863, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6864] <... creat resumed>) = 4 [pid 4998] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6864] unlink("./bus" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6864] <... unlink resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6866] <... write resumed>) = 2097152 [pid 6864] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 6866] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./155/binderfs") = 0 [pid 4998] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6867] <... write resumed>) = 2097152 [pid 6866] <... munmap resumed>) = 0 [pid 6864] <... pwritev2 resumed>) = 65007 [pid 6862] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 6864] exit_group(0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6862, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6864] <... exit_group resumed>) = ? [pid 6867] munmap(0x7f46b9f9b000, 2097152 [pid 6866] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4997] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6867] <... munmap resumed>) = 0 [pid 6866] <... openat resumed>) = 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./151/binderfs", [pid 6867] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6866] ioctl(4, LOOP_SET_FD, 3 [pid 4997] lstat("./155/file0", [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6867] <... openat resumed>) = 4 [pid 4995] unlink("./151/binderfs") = 0 [pid 4995] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6867] ioctl(4, LOOP_SET_FD, 3 [pid 6866] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6864] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./155/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./155/file0" [pid 6866] close(3 [pid 4997] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6866] <... close resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6864, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 6866] mkdir("./file0", 0777 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, [pid 6866] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6867] <... ioctl resumed>) = 0 [pid 6866] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] close(3 [pid 4997] fstat(4, [pid 4993] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6867] close(3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 6867] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4993] fstat(3, [pid 6867] mkdir("./file0", 0777 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6867] <... mkdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4993] getdents64(3, [pid 6867] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] close(4 [pid 4993] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] rmdir("./155/file0" [pid 4993] lstat("./155/binderfs", [pid 4998] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] rmdir("./155" [pid 4997] getdents64(3, [pid 4993] unlink("./155/binderfs" [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4998] mkdir("./156", 0777 [pid 4997] close(3 [pid 4993] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] rmdir("./155" [pid 4995] <... umount2 resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] mkdir("./156", 0777 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... mkdir resumed>) = 0 [ 168.745747][ T6866] loop3: detected capacity change from 0 to 4096 [ 168.766732][ T6867] loop1: detected capacity change from 0 to 4096 [ 168.785372][ T6866] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 4998] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6871 [pid 4997] close(3) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] lstat("./155/file0", [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6872 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6871 attached [pid 6871] chdir("./156") = 0 [pid 6871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6871] setpgid(0, 0) = 0 [pid 6871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6872 attached ) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6871] write(3, "1000", 4 [pid 4993] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6872] chdir("./156" [pid 6871] <... write resumed>) = 4 [pid 6872] <... chdir resumed>) = 0 [pid 6871] close(3 [pid 4993] <... openat resumed>) = 4 [pid 6872] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6871] <... close resumed>) = 0 [pid 4995] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(4, [pid 6872] <... prctl resumed>) = 0 [pid 6871] symlink("/dev/binderfs", "./binderfs" [pid 6872] setpgid(0, 0 [pid 6871] <... symlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6871] memfd_create("syzkaller", 0) = 3 [pid 6871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6872] <... setpgid resumed>) = 0 [pid 4995] lstat("./151/file0", [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4995] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(4 [pid 6872] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 6872] write(3, "1000", 4 [pid 4995] fstat(4, [pid 4993] rmdir("./155/file0" [pid 6872] <... write resumed>) = 4 [ 168.815539][ T6866] NILFS (loop3): trying rollback from an earlier position [ 168.831435][ T6867] NILFS (loop1): invalid segment: Checksum error in segment payload [ 168.855555][ T6867] NILFS (loop1): trying rollback from an earlier position [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6872] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] getdents64(4, [pid 6872] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(3, [pid 6872] symlink("/dev/binderfs", "./binderfs" [pid 4995] getdents64(4, [pid 6872] <... symlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6872] memfd_create("syzkaller", 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 4995] close(4 [pid 4993] <... close resumed>) = 0 [pid 6872] <... memfd_create resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4993] rmdir("./155" [pid 6872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] rmdir("./151/file0" [pid 6872] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] <... rmdir resumed>) = 0 [pid 6866] <... mount resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] mkdir("./156", 0777 [pid 6866] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] getdents64(3, [pid 6866] <... openat resumed>) = 3 [pid 4993] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6867] <... mount resumed>) = 0 [pid 6866] chdir("./file0") = 0 [pid 6866] ioctl(4, LOOP_CLR_FD) = 0 [ 168.869985][ T6866] NILFS (loop3): recovery complete [ 168.885503][ T6867] NILFS (loop1): recovery complete [ 168.899723][ T6873] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6866] close(4) = 0 [pid 6867] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6866] creat("./bus", 000 [pid 4995] close(3 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6867] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 6867] chdir("./file0" [pid 4995] rmdir("./151" [pid 4993] <... openat resumed>) = 3 [pid 6867] <... chdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6867] ioctl(4, LOOP_CLR_FD [pid 4995] mkdir("./152", 0777 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6867] <... ioctl resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6867] close(4 [pid 4993] close(3 [pid 6867] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6867] creat("./bus", 000 [pid 4993] <... close resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6875 [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6876 ./strace-static-x86_64: Process 6876 attached [pid 6876] chdir("./152") = 0 ./strace-static-x86_64: Process 6875 attached [pid 6876] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6871] <... write resumed>) = 2097152 [pid 6876] <... prctl resumed>) = 0 [pid 6875] chdir("./156" [pid 6871] munmap(0x7f46b9f9b000, 2097152 [pid 6867] <... creat resumed>) = 4 [pid 6876] setpgid(0, 0 [pid 6875] <... chdir resumed>) = 0 [ 168.916819][ T6874] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6871] <... munmap resumed>) = 0 [pid 6867] unlink("./bus" [pid 6876] <... setpgid resumed>) = 0 [pid 6875] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6872] <... write resumed>) = 2097152 [pid 6871] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6866] <... creat resumed>) = 4 [pid 6876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6875] <... prctl resumed>) = 0 [pid 6872] munmap(0x7f46b9f9b000, 2097152 [pid 6871] <... openat resumed>) = 4 [pid 6867] <... unlink resumed>) = 0 [pid 6866] unlink("./bus" [pid 6876] <... openat resumed>) = 3 [pid 6875] setpgid(0, 0 [pid 6866] <... unlink resumed>) = 0 [pid 6876] write(3, "1000", 4 [pid 6866] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6872] <... munmap resumed>) = 0 [pid 6876] <... write resumed>) = 4 [pid 6875] <... setpgid resumed>) = 0 [pid 6872] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6871] ioctl(4, LOOP_SET_FD, 3 [pid 6867] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6876] close(3 [pid 6875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6872] <... openat resumed>) = 4 [pid 6866] <... pwritev2 resumed>) = 65007 [pid 6876] <... close resumed>) = 0 [pid 6866] exit_group(0 [pid 6876] symlink("/dev/binderfs", "./binderfs" [pid 6866] <... exit_group resumed>) = ? [pid 6876] <... symlink resumed>) = 0 [pid 6875] <... openat resumed>) = 3 [pid 6872] ioctl(4, LOOP_SET_FD, 3 [pid 6871] <... ioctl resumed>) = 0 [pid 6876] memfd_create("syzkaller", 0 [pid 6875] write(3, "1000", 4 [pid 6866] +++ exited with 0 +++ [pid 6876] <... memfd_create resumed>) = 3 [pid 6876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6866, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 6876] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6875] <... write resumed>) = 4 [pid 4996] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6875] close(3 [pid 6872] <... ioctl resumed>) = 0 [pid 6871] close(3 [pid 6875] <... close resumed>) = 0 [pid 6872] close(3 [pid 6871] <... close resumed>) = 0 [pid 6875] symlink("/dev/binderfs", "./binderfs" [pid 6872] <... close resumed>) = 0 [pid 6871] mkdir("./file0", 0777 [pid 6875] <... symlink resumed>) = 0 [pid 6872] mkdir("./file0", 0777 [pid 6871] <... mkdir resumed>) = 0 [pid 6875] memfd_create("syzkaller", 0 [pid 6872] <... mkdir resumed>) = 0 [pid 6871] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6876] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6875] <... memfd_create resumed>) = 3 [pid 6872] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6867] <... pwritev2 resumed>) = 65007 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 169.002369][ T6871] loop5: detected capacity change from 0 to 4096 [ 169.022190][ T6872] loop4: detected capacity change from 0 to 4096 [ 169.039289][ T6871] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6875] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6867] exit_group(0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6876] <... write resumed>) = 2097152 [pid 4996] lstat("./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./155/binderfs") = 0 [pid 4996] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6876] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6876] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6867] <... exit_group resumed>) = ? [pid 6867] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6867, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [ 169.047699][ T6871] NILFS (loop5): trying rollback from an earlier position [ 169.060774][ T6872] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 4994] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./154/binderfs") = 0 [pid 4994] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6876] <... openat resumed>) = 4 [pid 6876] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [ 169.094363][ T6872] NILFS (loop4): trying rollback from an earlier position [ 169.114089][ T6871] NILFS (loop5): recovery complete [ 169.125028][ T6876] loop2: detected capacity change from 0 to 4096 [pid 6875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6871] <... mount resumed>) = 0 [pid 6871] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6871] chdir("./file0") = 0 [pid 6876] <... ioctl resumed>) = 0 [pid 6871] ioctl(4, LOOP_CLR_FD) = 0 [pid 6876] close(3 [pid 6871] close(4 [pid 6876] <... close resumed>) = 0 [pid 6871] <... close resumed>) = 0 [pid 4996] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6876] mkdir("./file0", 0777 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6876] <... mkdir resumed>) = 0 [pid 4996] lstat("./155/file0", [pid 4994] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6876] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6871] creat("./bus", 000 [pid 4996] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./154/file0", [pid 4996] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] fstat(4, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(4, [pid 4994] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] fstat(4, [pid 4996] getdents64(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 169.148158][ T6877] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.179088][ T6876] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 4994] getdents64(4, [pid 4996] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 4996] rmdir("./155/file0" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] close(4 [pid 4996] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./154/file0" [pid 4996] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4996] rmdir("./155" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6875] <... write resumed>) = 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 6875] munmap(0x7f46b9f9b000, 2097152 [pid 4996] mkdir("./156", 0777 [pid 4994] <... close resumed>) = 0 [pid 6875] <... munmap resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] rmdir("./154" [pid 6875] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6872] <... mount resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... rmdir resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4994] mkdir("./155", 0777 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... mkdir resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] close(3 [pid 4994] <... openat resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6879 [pid 4994] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6880 ./strace-static-x86_64: Process 6879 attached [pid 6879] chdir("./156") = 0 [pid 6875] <... openat resumed>) = 4 [pid 6872] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6871] <... creat resumed>) = 4 ./strace-static-x86_64: Process 6880 attached [pid 6879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6875] ioctl(4, LOOP_SET_FD, 3 [pid 6872] <... openat resumed>) = 3 [pid 6871] unlink("./bus" [pid 6880] chdir("./155" [pid 6879] <... prctl resumed>) = 0 [pid 6880] <... chdir resumed>) = 0 [pid 6879] setpgid(0, 0 [pid 6880] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6879] <... setpgid resumed>) = 0 [pid 6880] <... prctl resumed>) = 0 [pid 6879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6880] setpgid(0, 0 [pid 6879] <... openat resumed>) = 3 [pid 6880] <... setpgid resumed>) = 0 [pid 6879] write(3, "1000", 4 [pid 6880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6879] <... write resumed>) = 4 [pid 6880] <... openat resumed>) = 3 [ 169.199766][ T6872] NILFS (loop4): recovery complete [ 169.214938][ T6878] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.232121][ T6876] NILFS (loop2): trying rollback from an earlier position [pid 6879] close(3 [pid 6880] write(3, "1000", 4 [pid 6879] <... close resumed>) = 0 [pid 6875] <... ioctl resumed>) = 0 [pid 6880] <... write resumed>) = 4 [pid 6879] symlink("/dev/binderfs", "./binderfs" [pid 6872] chdir("./file0" [pid 6871] <... unlink resumed>) = 0 [pid 6880] close(3 [pid 6879] <... symlink resumed>) = 0 [pid 6872] <... chdir resumed>) = 0 [pid 6871] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6880] <... close resumed>) = 0 [pid 6879] memfd_create("syzkaller", 0 [pid 6875] close(3 [pid 6872] ioctl(4, LOOP_CLR_FD [pid 6880] symlink("/dev/binderfs", "./binderfs" [pid 6879] <... memfd_create resumed>) = 3 [pid 6880] <... symlink resumed>) = 0 [pid 6879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6880] memfd_create("syzkaller", 0 [pid 6879] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6880] <... memfd_create resumed>) = 3 [pid 6875] <... close resumed>) = 0 [pid 6872] <... ioctl resumed>) = 0 [pid 6871] <... pwritev2 resumed>) = 65007 [pid 6880] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6875] mkdir("./file0", 0777 [pid 6872] close(4 [pid 6871] exit_group(0 [pid 6880] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6875] <... mkdir resumed>) = 0 [pid 6872] <... close resumed>) = 0 [pid 6871] <... exit_group resumed>) = ? [pid 6875] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 169.244520][ T6875] loop0: detected capacity change from 0 to 4096 [pid 6872] creat("./bus", 000) = 4 [pid 6872] unlink("./bus" [pid 6871] +++ exited with 0 +++ [pid 6872] <... unlink resumed>) = 0 [pid 6879] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6872] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6871, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6880] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6872] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./156/binderfs") = 0 [ 169.297426][ T6875] NILFS (loop0): invalid segment: Checksum error in segment payload [ 169.330046][ T6876] NILFS (loop2): recovery complete [pid 4998] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6872] exit_group(0) = ? [pid 6872] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6872, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./156/binderfs") = 0 [pid 4997] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6880] <... write resumed>) = 2097152 [ 169.343130][ T6875] NILFS (loop0): trying rollback from an earlier position [pid 6876] <... mount resumed>) = 0 [pid 6876] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6876] chdir("./file0") = 0 [pid 6876] ioctl(4, LOOP_CLR_FD) = 0 [pid 6876] close(4 [pid 6879] <... write resumed>) = 2097152 [pid 6876] <... close resumed>) = 0 [pid 6879] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6880] munmap(0x7f46b9f9b000, 2097152 [pid 6879] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6876] creat("./bus", 000 [pid 6879] <... openat resumed>) = 4 [pid 6880] <... munmap resumed>) = 0 [pid 6879] ioctl(4, LOOP_SET_FD, 3 [pid 6880] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6880] ioctl(4, LOOP_SET_FD, 3 [ 169.385508][ T6881] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.418540][ T6879] loop3: detected capacity change from 0 to 4096 [ 169.428201][ T6880] loop1: detected capacity change from 0 to 4096 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./156/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./156/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./156" [pid 6876] <... creat resumed>) = 4 [pid 6875] <... mount resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 6880] <... ioctl resumed>) = 0 [pid 6879] <... ioctl resumed>) = 0 [pid 6876] unlink("./bus" [pid 6875] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... umount2 resumed>) = 0 [pid 6880] close(3 [pid 6879] close(3 [pid 6875] <... openat resumed>) = 3 [pid 4997] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6880] <... close resumed>) = 0 [pid 6879] <... close resumed>) = 0 [pid 6875] chdir("./file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6880] mkdir("./file0", 0777 [pid 6879] mkdir("./file0", 0777 [pid 6875] <... chdir resumed>) = 0 [pid 4997] lstat("./156/file0", [pid 6880] <... mkdir resumed>) = 0 [pid 6879] <... mkdir resumed>) = 0 [pid 6876] <... unlink resumed>) = 0 [pid 6875] ioctl(4, LOOP_CLR_FD [pid 4998] mkdir("./157", 0777 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6880] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6879] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6876] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6875] <... ioctl resumed>) = 0 [pid 4997] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... mkdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 169.435565][ T6875] NILFS (loop0): recovery complete [ 169.452770][ T6882] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] close(3 [pid 6875] close(4 [pid 4998] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6875] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6883 [pid 6875] creat("./bus", 000 [pid 4997] <... openat resumed>) = 4 [pid 4997] fstat(4, ./strace-static-x86_64: Process 6883 attached [pid 6875] <... creat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6875] unlink("./bus" [pid 4997] getdents64(4, [pid 6876] <... pwritev2 resumed>) = 65007 [pid 6875] <... unlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6883] chdir("./157" [pid 6876] exit_group(0 [pid 6875] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] getdents64(4, [pid 6883] <... chdir resumed>) = 0 [pid 6876] <... exit_group resumed>) = ? [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 6883] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... close resumed>) = 0 [pid 6883] <... prctl resumed>) = 0 [pid 6876] +++ exited with 0 +++ [pid 4997] rmdir("./156/file0" [pid 6883] setpgid(0, 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6876, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6883] <... setpgid resumed>) = 0 [pid 4997] getdents64(3, [pid 6883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6883] <... openat resumed>) = 3 [pid 4997] close(3 [pid 6883] write(3, "1000", 4 [pid 4997] <... close resumed>) = 0 [pid 6883] <... write resumed>) = 4 [pid 4997] rmdir("./156" [pid 6883] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 6883] <... close resumed>) = 0 [pid 4997] mkdir("./157", 0777 [pid 6883] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... mkdir resumed>) = 0 [pid 4995] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6883] <... symlink resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 169.488239][ T6879] NILFS (loop3): invalid segment: Checksum error in segment payload [ 169.498749][ T6879] NILFS (loop3): trying rollback from an earlier position [ 169.506595][ T6880] NILFS (loop1): invalid segment: Checksum error in segment payload [ 169.519427][ T6880] NILFS (loop1): trying rollback from an earlier position [pid 6883] memfd_create("syzkaller", 0 [pid 6875] <... pwritev2 resumed>) = 65007 [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6883] <... memfd_create resumed>) = 3 [pid 6875] exit_group(0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 3 [pid 6883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6875] <... exit_group resumed>) = ? [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] fstat(3, [pid 6883] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6875] +++ exited with 0 +++ [pid 4997] close(3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6875, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4997] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6886 [pid 4995] lstat("./152/binderfs", [pid 4993] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6879] <... mount resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... openat resumed>) = 3 ./strace-static-x86_64: Process 6886 attached [pid 6883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6880] <... mount resumed>) = 0 [pid 6879] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] unlink("./152/binderfs" [pid 6886] chdir("./157" [pid 6880] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6879] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 6886] <... chdir resumed>) = 0 [pid 6880] <... openat resumed>) = 3 [pid 6879] chdir("./file0" [pid 4995] <... unlink resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6883] <... write resumed>) = 2097152 [ 169.562520][ T6880] NILFS (loop1): recovery complete [ 169.568266][ T6879] NILFS (loop3): recovery complete [ 169.587369][ T6884] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.602363][ T6885] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6880] chdir("./file0" [pid 6879] <... chdir resumed>) = 0 [pid 4995] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 6886] <... prctl resumed>) = 0 [pid 6883] munmap(0x7f46b9f9b000, 2097152 [pid 6880] <... chdir resumed>) = 0 [pid 6879] ioctl(4, LOOP_CLR_FD [pid 6886] setpgid(0, 0 [pid 6883] <... munmap resumed>) = 0 [pid 6880] ioctl(4, LOOP_CLR_FD [pid 6879] <... ioctl resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6886] <... setpgid resumed>) = 0 [pid 6883] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6880] <... ioctl resumed>) = 0 [pid 6879] close(4 [pid 4993] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6883] <... openat resumed>) = 4 [pid 6880] close(4 [pid 6879] <... close resumed>) = 0 [pid 6886] <... openat resumed>) = 3 [pid 6883] ioctl(4, LOOP_SET_FD, 3 [pid 6879] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6886] write(3, "1000", 4 [pid 6880] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6886] <... write resumed>) = 4 [pid 6886] close(3) = 0 [pid 6886] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6886] memfd_create("syzkaller", 0 [pid 6880] creat("./bus", 000 [pid 4995] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./156/binderfs", [pid 6886] <... memfd_create resumed>) = 3 [pid 6879] <... creat resumed>) = 4 [pid 6886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6879] unlink("./bus" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6886] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6879] <... unlink resumed>) = 0 [pid 6880] <... creat resumed>) = 4 [pid 4995] lstat("./152/file0", [pid 4993] unlink("./156/binderfs" [pid 6886] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6883] <... ioctl resumed>) = 0 [pid 6880] unlink("./bus" [pid 6879] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6883] close(3 [pid 4995] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 6883] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6883] mkdir("./file0", 0777 [pid 4995] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6883] <... mkdir resumed>) = 0 [pid 6880] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 6883] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 169.636048][ T6883] loop5: detected capacity change from 0 to 4096 [pid 6880] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] fstat(4, [pid 6886] <... write resumed>) = 2097152 [pid 6879] <... pwritev2 resumed>) = 65007 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./152/file0" [pid 6886] munmap(0x7f46b9f9b000, 2097152 [pid 6880] <... pwritev2 resumed>) = 65007 [pid 6879] exit_group(0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6886] <... munmap resumed>) = 0 [pid 6880] exit_group(0 [pid 6879] <... exit_group resumed>) = ? [pid 4995] getdents64(3, [pid 6886] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6880] <... exit_group resumed>) = ? [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6886] <... openat resumed>) = 4 [pid 4995] close(3 [pid 4993] lstat("./156/file0", [pid 6886] ioctl(4, LOOP_SET_FD, 3 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./152" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./153", 0777 [pid 6879] +++ exited with 0 +++ [pid 4995] <... mkdir resumed>) = 0 [pid 4993] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6879, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 6886] <... ioctl resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6886] close(3 [pid 4993] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6886] <... close resumed>) = 0 [pid 4996] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6886] mkdir("./file0", 0777 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(3 [pid 4993] <... openat resumed>) = 4 [pid 4996] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 6880] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] fstat(3, [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6880, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6887 [pid 4993] fstat(4, [pid 6886] <... mkdir resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./156/binderfs", [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6886] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, ./strace-static-x86_64: Process 6887 attached [pid 4996] unlink("./156/binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6887] chdir("./153" [pid 4996] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(4 [pid 6887] <... chdir resumed>) = 0 [pid 4996] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 6887] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] fstat(3, [pid 4993] <... close resumed>) = 0 [pid 6887] <... prctl resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 169.706628][ T6883] NILFS (loop5): invalid segment: Checksum error in segment payload [ 169.730300][ T6883] NILFS (loop5): trying rollback from an earlier position [ 169.748556][ T6886] loop4: detected capacity change from 0 to 4096 [pid 4993] rmdir("./156/file0" [pid 6887] setpgid(0, 0 [pid 4994] getdents64(3, [pid 6887] <... setpgid resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6887] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6887] write(3, "1000", 4 [pid 4994] lstat("./155/binderfs", [pid 6887] <... write resumed>) = 4 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6887] close(3 [pid 4994] unlink("./155/binderfs" [pid 6887] <... close resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6887] symlink("/dev/binderfs", "./binderfs" [pid 4994] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 6887] <... symlink resumed>) = 0 [pid 6887] memfd_create("syzkaller", 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6887] <... memfd_create resumed>) = 3 [pid 6887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6883] <... mount resumed>) = 0 [pid 4993] close(3 [pid 6883] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... close resumed>) = 0 [pid 6883] <... openat resumed>) = 3 [pid 4993] rmdir("./156" [pid 6883] chdir("./file0") = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6883] ioctl(4, LOOP_CLR_FD [pid 4993] mkdir("./157", 0777 [pid 6883] <... ioctl resumed>) = 0 [pid 6883] close(4 [pid 4993] <... mkdir resumed>) = 0 [pid 6883] <... close resumed>) = 0 [pid 6883] creat("./bus", 000 [ 169.786810][ T6883] NILFS (loop5): recovery complete [ 169.800365][ T6886] NILFS (loop4): invalid segment: Checksum error in segment payload [ 169.810712][ T6888] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 169.821579][ T6886] NILFS (loop4): trying rollback from an earlier position [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6883] <... creat resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 6883] unlink("./bus" [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6883] <... unlink resumed>) = 0 [pid 4993] close(3 [pid 6883] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6889 [pid 4996] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./156/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./156/file0") = 0 [pid 6887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] getdents64(3, [pid 4994] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6889 attached [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6889] chdir("./157" [pid 4996] close(3 [pid 6889] <... chdir resumed>) = 0 [pid 6883] <... pwritev2 resumed>) = 65007 [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6889] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6883] exit_group(0 [pid 4996] rmdir("./156" [pid 6889] <... prctl resumed>) = 0 [pid 6883] <... exit_group resumed>) = ? [pid 4996] <... rmdir resumed>) = 0 [pid 4994] lstat("./155/file0", [pid 6889] setpgid(0, 0 [pid 4996] mkdir("./157", 0777 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6889] <... setpgid resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6889] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6889] write(3, "1000", 4 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] <... openat resumed>) = 4 [pid 6889] <... write resumed>) = 4 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [ 169.890532][ T6886] NILFS (loop4): recovery complete [pid 4994] fstat(4, [pid 6889] close(3 [pid 4996] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6889] <... close resumed>) = 0 [pid 6886] <... mount resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6891 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./155/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./155" [pid 6889] symlink("/dev/binderfs", "./binderfs" [pid 6886] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6883] +++ exited with 0 +++ [pid 4994] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6891 attached [pid 6889] <... symlink resumed>) = 0 [pid 6886] <... openat resumed>) = 3 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6883, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] mkdir("./156", 0777 [pid 6891] chdir("./157" [pid 6889] memfd_create("syzkaller", 0 [pid 6886] chdir("./file0" [pid 4994] <... mkdir resumed>) = 0 [pid 6891] <... chdir resumed>) = 0 [pid 6889] <... memfd_create resumed>) = 3 [pid 6886] <... chdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6891] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6886] ioctl(4, LOOP_CLR_FD [pid 4998] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 6891] <... prctl resumed>) = 0 [pid 6889] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6886] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6891] setpgid(0, 0 [pid 4998] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6891] <... setpgid resumed>) = 0 [pid 6886] close(4 [pid 4998] <... openat resumed>) = 3 [pid 4994] close(3 [pid 6891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6886] <... close resumed>) = 0 [pid 4998] fstat(3, [pid 4994] <... close resumed>) = 0 [pid 6891] <... openat resumed>) = 3 [pid 6886] creat("./bus", 000 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6891] write(3, "1000", 4 [pid 4998] getdents64(3, [pid 6891] <... write resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6892 [pid 6891] close(3 [pid 6887] <... write resumed>) = 2097152 [pid 4998] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6891] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6891] symlink("/dev/binderfs", "./binderfs" [pid 4998] lstat("./157/binderfs", [pid 6891] <... symlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6891] memfd_create("syzkaller", 0 [pid 4998] unlink("./157/binderfs"./strace-static-x86_64: Process 6892 attached [pid 6891] <... memfd_create resumed>) = 3 [pid 4998] <... unlink resumed>) = 0 [pid 6892] chdir("./156" [pid 6891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6892] <... chdir resumed>) = 0 [pid 6891] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6892] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6887] munmap(0x7f46b9f9b000, 2097152 [pid 6892] <... prctl resumed>) = 0 [pid 6886] <... creat resumed>) = 4 [pid 6892] setpgid(0, 0 [pid 6886] unlink("./bus" [pid 6892] <... setpgid resumed>) = 0 [pid 6887] <... munmap resumed>) = 0 [pid 6886] <... unlink resumed>) = 0 [pid 6892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6887] openat(AT_FDCWD, "/dev/loop2", O_RDWR [ 169.920874][ T6890] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6886] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6892] <... openat resumed>) = 3 [pid 6887] <... openat resumed>) = 4 [pid 6892] write(3, "1000", 4 [pid 6887] ioctl(4, LOOP_SET_FD, 3 [pid 6892] <... write resumed>) = 4 [pid 6889] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6892] close(3) = 0 [pid 6892] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6892] memfd_create("syzkaller", 0) = 3 [pid 6892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6886] <... pwritev2 resumed>) = 65007 [pid 6886] exit_group(0) = ? [pid 6891] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6887] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 6887] close(3 [pid 6886] +++ exited with 0 +++ [pid 6887] <... close resumed>) = 0 [pid 4998] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6886, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6887] mkdir("./file0", 0777) = 0 [pid 6887] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./157/file0", [ 169.983868][ T6887] loop2: detected capacity change from 0 to 4096 [pid 4997] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(3, [pid 4998] <... openat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(4, [pid 4997] getdents64(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6889] <... write resumed>) = 2097152 [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] lstat("./157/binderfs", [pid 6889] munmap(0x7f46b9f9b000, 2097152 [pid 4998] close(4 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] unlink("./157/binderfs" [pid 6892] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] rmdir("./157/file0" [pid 4997] <... unlink resumed>) = 0 [pid 6889] <... munmap resumed>) = 0 [pid 6889] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... rmdir resumed>) = 0 [pid 4997] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./157") = 0 [pid 4998] mkdir("./158", 0777 [pid 6889] <... openat resumed>) = 4 [pid 6889] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... mkdir resumed>) = 0 [pid 6889] <... ioctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6889] close(3 [pid 4998] <... openat resumed>) = 3 [pid 6889] <... close resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 6892] <... write resumed>) = 2097152 [pid 6891] <... write resumed>) = 2097152 [pid 6889] mkdir("./file0", 0777 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6891] munmap(0x7f46b9f9b000, 2097152 [pid 6889] <... mkdir resumed>) = 0 [pid 4998] close(3 [pid 6889] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 6891] <... munmap resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6891] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 170.054386][ T6887] NILFS (loop2): invalid segment: Checksum error in segment payload [ 170.085597][ T6889] loop0: detected capacity change from 0 to 4096 [ 170.090123][ T6887] NILFS (loop2): trying rollback from an earlier position [pid 6891] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6893 [pid 6892] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6891] <... ioctl resumed>) = 0 [pid 6891] close(3) = 0 [pid 6891] mkdir("./file0", 0777 [pid 6892] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6892] ioctl(4, LOOP_SET_FD, 3 [pid 4997] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./157/file0", ./strace-static-x86_64: Process 6893 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6891] <... mkdir resumed>) = 0 [pid 6891] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6893] chdir("./158" [pid 4997] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 170.123798][ T6891] loop3: detected capacity change from 0 to 4096 [ 170.133851][ T6889] NILFS (loop0): invalid segment: Checksum error in segment payload [ 170.147759][ T6892] loop1: detected capacity change from 0 to 4096 [ 170.152392][ T6889] NILFS (loop0): trying rollback from an earlier position [pid 6893] <... chdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6892] <... ioctl resumed>) = 0 [pid 6892] close(3) = 0 [pid 6892] mkdir("./file0", 0777 [pid 6893] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6893] <... prctl resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 6893] setpgid(0, 0 [pid 4997] fstat(4, [pid 6892] <... mkdir resumed>) = 0 [pid 6892] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6893] <... setpgid resumed>) = 0 [pid 6889] <... mount resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6889] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(4, [pid 6893] <... openat resumed>) = 3 [pid 6889] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6893] write(3, "1000", 4 [pid 6889] chdir("./file0" [ 170.170727][ T6891] NILFS (loop3): invalid segment: Checksum error in segment payload [ 170.171918][ T6889] NILFS (loop0): recovery complete [ 170.187107][ T6894] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.188558][ T6887] NILFS (loop2): recovery complete [ 170.198300][ T6891] NILFS (loop3): trying rollback from an earlier position [pid 4997] getdents64(4, [pid 6893] <... write resumed>) = 4 [pid 6889] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6893] close(3) = 0 [pid 6893] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6889] ioctl(4, LOOP_CLR_FD [pid 4997] close(4 [pid 6893] memfd_create("syzkaller", 0 [pid 6889] <... ioctl resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6893] <... memfd_create resumed>) = 3 [pid 6889] close(4 [pid 4997] rmdir("./157/file0" [pid 6889] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6889] creat("./bus", 000 [pid 4997] getdents64(3, [pid 6893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6887] <... mount resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6893] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6887] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6891] <... mount resumed>) = 0 [pid 6891] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6889] <... creat resumed>) = 4 [pid 6887] <... openat resumed>) = 3 [pid 4997] close(3 [pid 6891] <... openat resumed>) = 3 [pid 6889] unlink("./bus" [pid 6887] chdir("./file0" [pid 4997] <... close resumed>) = 0 [pid 6891] chdir("./file0" [pid 6887] <... chdir resumed>) = 0 [pid 4997] rmdir("./157" [pid 6891] <... chdir resumed>) = 0 [pid 6889] <... unlink resumed>) = 0 [pid 6887] ioctl(4, LOOP_CLR_FD [pid 6891] ioctl(4, LOOP_CLR_FD [pid 6889] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6887] <... ioctl resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 6891] <... ioctl resumed>) = 0 [pid 6891] close(4) = 0 [pid 6891] creat("./bus", 000 [ 170.221003][ T6892] NILFS (loop1): invalid segment: Checksum error in segment payload [ 170.224315][ T6891] NILFS (loop3): recovery complete [ 170.229499][ T6892] NILFS (loop1): trying rollback from an earlier position [ 170.241596][ T6895] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.255821][ T6896] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6887] close(4 [pid 4997] mkdir("./158", 0777 [pid 6887] <... close resumed>) = 0 [pid 6887] creat("./bus", 000 [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6887] <... creat resumed>) = 4 [pid 4997] <... openat resumed>) = 3 [pid 6887] unlink("./bus" [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 6887] <... unlink resumed>) = 0 [pid 4997] close(3 [pid 6893] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6889] <... pwritev2 resumed>) = 65007 [pid 6887] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... close resumed>) = 0 [pid 6889] exit_group(0) = ? [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6891] <... creat resumed>) = 4 [ 170.286640][ T6892] NILFS (loop1): recovery complete [pid 6891] unlink("./bus" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6898 [pid 6887] <... pwritev2 resumed>) = 65007 [pid 6891] <... unlink resumed>) = 0 [pid 6889] +++ exited with 0 +++ [pid 6887] exit_group(0 [pid 6891] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6887] <... exit_group resumed>) = ? [pid 6892] <... mount resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6889, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- ./strace-static-x86_64: Process 6898 attached [pid 6892] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6898] chdir("./158" [pid 6892] <... openat resumed>) = 3 [pid 6887] +++ exited with 0 +++ [pid 4993] <... restart_syscall resumed>) = 0 [pid 6898] <... chdir resumed>) = 0 [pid 6892] chdir("./file0" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6887, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6898] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6892] <... chdir resumed>) = 0 [pid 6898] <... prctl resumed>) = 0 [pid 6893] <... write resumed>) = 2097152 [pid 6892] ioctl(4, LOOP_CLR_FD [pid 4993] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6898] setpgid(0, 0 [pid 6892] <... ioctl resumed>) = 0 [pid 6891] <... pwritev2 resumed>) = 65007 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6898] <... setpgid resumed>) = 0 [pid 6892] close(4 [pid 6891] exit_group(0 [pid 4993] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6892] <... close resumed>) = 0 [pid 6891] <... exit_group resumed>) = ? [pid 4993] <... openat resumed>) = 3 [pid 6898] <... openat resumed>) = 3 [pid 6892] creat("./bus", 000 [pid 4995] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 6898] write(3, "1000", 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6898] <... write resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(3, [pid 6898] close(3 [pid 4995] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6898] <... close resumed>) = 0 [pid 4995] fstat(3, [pid 4993] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6898] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6898] <... symlink resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] lstat("./157/binderfs", [pid 6898] memfd_create("syzkaller", 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6898] <... memfd_create resumed>) = 3 [pid 4995] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./157/binderfs" [pid 6898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 6898] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] lstat("./153/binderfs", [ 170.334901][ T6897] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6893] munmap(0x7f46b9f9b000, 2097152 [pid 6892] <... creat resumed>) = 4 [pid 6892] unlink("./bus") = 0 [pid 6892] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./153/binderfs") = 0 [pid 6891] +++ exited with 0 +++ [pid 4995] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6891, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6898] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6893] <... munmap resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6893] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] fstat(3, [pid 6893] <... openat resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6893] ioctl(4, LOOP_SET_FD, 3 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./157/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./157/binderfs") = 0 [pid 4996] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6892] <... pwritev2 resumed>) = 65007 [pid 6892] exit_group(0) = ? [pid 6892] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6892, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./156/binderfs") = 0 [pid 4994] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [ 170.432487][ T6893] loop5: detected capacity change from 0 to 4096 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6893] <... ioctl resumed>) = 0 [pid 6893] close(3 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./157/file0", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6893] <... close resumed>) = 0 [pid 4994] lstat("./156/file0", [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6893] mkdir("./file0", 0777 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6893] <... mkdir resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] <... openat resumed>) = 4 [pid 6893] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] <... umount2 resumed>) = 0 [pid 4994] fstat(4, [pid 4993] fstat(4, [pid 4995] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4995] lstat("./153/file0", [pid 4993] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 6898] <... write resumed>) = 2097152 [pid 4996] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(4, [pid 6898] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6898] <... munmap resumed>) = 0 [pid 4996] lstat("./157/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4993] close(4 [pid 6898] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] rmdir("./156/file0" [pid 4993] <... close resumed>) = 0 [pid 6898] <... openat resumed>) = 4 [pid 4996] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] rmdir("./157/file0" [pid 6898] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] fstat(4, [pid 4994] getdents64(3, [pid 4993] <... rmdir resumed>) = 0 [pid 6898] <... ioctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 4996] <... openat resumed>) = 4 [pid 4995] getdents64(4, [pid 4994] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] fstat(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... close resumed>) = 0 [pid 4993] close(3 [pid 6898] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4994] rmdir("./156" [pid 4993] <... close resumed>) = 0 [pid 6898] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] rmdir("./157" [pid 6898] mkdir("./file0", 0777 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] close(4 [pid 4994] mkdir("./157", 0777 [pid 4993] <... rmdir resumed>) = 0 [pid 6898] <... mkdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... close resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] mkdir("./158", 0777 [pid 6898] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./153/file0" [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... mkdir resumed>) = 0 [pid 4996] close(4 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] <... openat resumed>) = 3 [pid 4996] rmdir("./157/file0" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4996] <... rmdir resumed>) = 0 [pid 4995] close(3 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4993] close(3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./153" [pid 4993] <... close resumed>) = 0 [pid 4996] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 4995] mkdir("./154", 0777 [pid 4994] <... openat resumed>) = 3 [pid 4996] rmdir("./157" [pid 4995] <... mkdir resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6899 ./strace-static-x86_64: Process 6899 attached [pid 4996] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] mkdir("./158", 0777 [pid 4995] <... openat resumed>) = 3 [pid 4994] close(3 [pid 6899] chdir("./158" [pid 4996] <... mkdir resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... openat resumed>) = 3 [pid 4995] close(3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... close resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6900 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6899] <... chdir resumed>) = 0 [pid 4996] close(3) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6901 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6899] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 6900 attached ) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6902 [pid 6900] chdir("./157" [pid 6899] setpgid(0, 0 [pid 6900] <... chdir resumed>) = 0 [pid 6899] <... setpgid resumed>) = 0 [pid 6900] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 6902 attached [pid 6900] <... prctl resumed>) = 0 [pid 6900] setpgid(0, 0 [pid 6899] <... openat resumed>) = 3 [pid 6902] chdir("./158" [pid 6900] <... setpgid resumed>) = 0 [pid 6899] write(3, "1000", 4 [pid 6902] <... chdir resumed>) = 0 [pid 6900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6899] <... write resumed>) = 4 [pid 6902] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6900] <... openat resumed>) = 3 [pid 6899] close(3 [pid 6902] <... prctl resumed>) = 0 [pid 6900] write(3, "1000", 4 [pid 6899] <... close resumed>) = 0 [ 170.526902][ T6898] loop4: detected capacity change from 0 to 4096 [ 170.530368][ T6893] NILFS (loop5): invalid segment: Checksum error in segment payload [ 170.552153][ T6898] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6902] setpgid(0, 0 [pid 6900] <... write resumed>) = 4 [pid 6899] symlink("/dev/binderfs", "./binderfs" [pid 6902] <... setpgid resumed>) = 0 [pid 6900] close(3 [pid 6902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6900] <... close resumed>) = 0 [pid 6902] <... openat resumed>) = 3 [pid 6900] symlink("/dev/binderfs", "./binderfs" [pid 6902] write(3, "1000", 4 [pid 6900] <... symlink resumed>) = 0 [pid 6902] <... write resumed>) = 4 [pid 6900] memfd_create("syzkaller", 0 [pid 6902] close(3 [pid 6900] <... memfd_create resumed>) = 3 [pid 6902] <... close resumed>) = 0 [pid 6900] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6902] symlink("/dev/binderfs", "./binderfs" [pid 6900] <... mmap resumed>) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6901 attached [pid 6902] <... symlink resumed>) = 0 [pid 6899] <... symlink resumed>) = 0 [pid 6902] memfd_create("syzkaller", 0 [pid 6901] chdir("./154" [pid 6899] memfd_create("syzkaller", 0 [pid 6902] <... memfd_create resumed>) = 3 [pid 6902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6901] <... chdir resumed>) = 0 [pid 6899] <... memfd_create resumed>) = 3 [pid 6901] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6899] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6901] <... prctl resumed>) = 0 [pid 6901] setpgid(0, 0 [pid 6899] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6901] <... setpgid resumed>) = 0 [pid 6901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6901] write(3, "1000", 4) = 4 [pid 6901] close(3) = 0 [ 170.584790][ T6893] NILFS (loop5): trying rollback from an earlier position [ 170.607436][ T6898] NILFS (loop4): trying rollback from an earlier position [pid 6900] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6902] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6901] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6901] memfd_create("syzkaller", 0) = 3 [pid 6901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 170.644322][ T6893] NILFS (loop5): recovery complete [pid 6899] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6893] <... mount resumed>) = 0 [pid 6901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6893] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6893] chdir("./file0") = 0 [pid 6893] ioctl(4, LOOP_CLR_FD) = 0 [pid 6893] close(4) = 0 [ 170.671428][ T6898] NILFS (loop4): recovery complete [ 170.682627][ T6903] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6893] creat("./bus", 000 [pid 6900] <... write resumed>) = 2097152 [pid 6900] munmap(0x7f46b9f9b000, 2097152 [pid 6902] <... write resumed>) = 2097152 [pid 6900] <... munmap resumed>) = 0 [pid 6900] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6900] ioctl(4, LOOP_SET_FD, 3 [pid 6902] munmap(0x7f46b9f9b000, 2097152 [pid 6901] <... write resumed>) = 2097152 [pid 6899] <... write resumed>) = 2097152 [pid 6898] <... mount resumed>) = 0 [pid 6893] <... creat resumed>) = 4 [pid 6900] <... ioctl resumed>) = 0 [pid 6901] munmap(0x7f46b9f9b000, 2097152 [pid 6899] munmap(0x7f46b9f9b000, 2097152 [pid 6898] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6893] unlink("./bus" [pid 6900] close(3) = 0 [pid 6900] mkdir("./file0", 0777 [pid 6902] <... munmap resumed>) = 0 [pid 6900] <... mkdir resumed>) = 0 [pid 6899] <... munmap resumed>) = 0 [pid 6898] <... openat resumed>) = 3 [pid 6893] <... unlink resumed>) = 0 [pid 6901] <... munmap resumed>) = 0 [pid 6902] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6901] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6900] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6899] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6901] <... openat resumed>) = 4 [pid 6899] <... openat resumed>) = 4 [pid 6902] <... openat resumed>) = 4 [pid 6901] ioctl(4, LOOP_SET_FD, 3 [pid 6899] ioctl(4, LOOP_SET_FD, 3 [pid 6898] chdir("./file0" [pid 6893] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6902] ioctl(4, LOOP_SET_FD, 3 [pid 6899] <... ioctl resumed>) = 0 [pid 6901] <... ioctl resumed>) = 0 [pid 6899] close(3 [pid 6901] close(3 [pid 6899] <... close resumed>) = 0 [pid 6901] <... close resumed>) = 0 [pid 6899] mkdir("./file0", 0777 [pid 6901] mkdir("./file0", 0777 [pid 6899] <... mkdir resumed>) = 0 [pid 6901] <... mkdir resumed>) = 0 [pid 6901] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6899] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6898] <... chdir resumed>) = 0 [pid 6898] ioctl(4, LOOP_CLR_FD) = 0 [pid 6898] close(4) = 0 [ 170.734344][ T6904] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.744957][ T6900] loop1: detected capacity change from 0 to 4096 [ 170.760744][ T6901] loop2: detected capacity change from 0 to 4096 [ 170.767482][ T6899] loop0: detected capacity change from 0 to 4096 [ 170.769001][ T6900] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6898] creat("./bus", 000) = 4 [pid 6902] <... ioctl resumed>) = 0 [pid 6898] unlink("./bus" [pid 6902] close(3 [pid 6898] <... unlink resumed>) = 0 [pid 6898] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6902] <... close resumed>) = 0 [pid 6893] <... pwritev2 resumed>) = 65007 [pid 6902] mkdir("./file0", 0777 [pid 6893] exit_group(0 [pid 6902] <... mkdir resumed>) = 0 [pid 6893] <... exit_group resumed>) = ? [ 170.793167][ T6902] loop3: detected capacity change from 0 to 4096 [ 170.811117][ T6900] NILFS (loop1): trying rollback from an earlier position [ 170.831683][ T6899] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6902] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6893] +++ exited with 0 +++ [pid 6898] <... pwritev2 resumed>) = 65007 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6893, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 6898] exit_group(0) = ? [pid 4998] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6900] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 170.841333][ T6900] NILFS (loop1): recovery complete [ 170.842232][ T6901] NILFS (loop2): invalid segment: Checksum error in segment payload [ 170.847987][ T6899] NILFS (loop0): trying rollback from an earlier position [ 170.855929][ T6901] NILFS (loop2): trying rollback from an earlier position [ 170.874964][ T6902] NILFS (loop3): invalid segment: Checksum error in segment payload [ 170.880714][ T6905] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6898] +++ exited with 0 +++ [pid 6900] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6898, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6900] <... openat resumed>) = 3 [pid 6900] chdir("./file0" [pid 4998] <... openat resumed>) = 3 [pid 6900] <... chdir resumed>) = 0 [pid 4998] fstat(3, [pid 6900] ioctl(4, LOOP_CLR_FD [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6900] <... ioctl resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6900] close(4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6900] <... close resumed>) = 0 [pid 4998] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 6900] creat("./bus", 000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] fstat(3, [pid 4998] lstat("./158/binderfs", [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] getdents64(3, [pid 4998] unlink("./158/binderfs" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... unlink resumed>) = 0 [pid 4997] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./158/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./158/binderfs") = 0 [pid 4997] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6899] <... mount resumed>) = 0 [pid 6899] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6899] chdir("./file0") = 0 [pid 6899] ioctl(4, LOOP_CLR_FD) = 0 [pid 6899] close(4) = 0 [pid 6899] creat("./bus", 000) = 4 [pid 6899] unlink("./bus" [pid 6900] <... creat resumed>) = 4 [pid 6900] unlink("./bus" [pid 6899] <... unlink resumed>) = 0 [pid 6900] <... unlink resumed>) = 0 [pid 6899] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 170.884079][ T6902] NILFS (loop3): trying rollback from an earlier position [ 170.897132][ T6899] NILFS (loop0): recovery complete [ 170.919192][ T6906] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 170.924740][ T6902] NILFS (loop3): recovery complete [ 170.935630][ T6901] NILFS (loop2): recovery complete [pid 6900] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6899] <... pwritev2 resumed>) = 65007 [pid 6899] exit_group(0) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 6902] <... mount resumed>) = 0 [pid 6902] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6901] <... mount resumed>) = 0 [pid 6900] <... pwritev2 resumed>) = 65007 [pid 6902] <... openat resumed>) = 3 [pid 6901] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6900] exit_group(0 [pid 6902] chdir("./file0" [pid 6901] <... openat resumed>) = 3 [pid 6900] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = 0 [pid 6902] <... chdir resumed>) = 0 [pid 6901] chdir("./file0" [pid 4997] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./158/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6902] ioctl(4, LOOP_CLR_FD [pid 6901] <... chdir resumed>) = 0 [pid 4997] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6902] <... ioctl resumed>) = 0 [pid 6901] ioctl(4, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 4 [pid 6902] close(4 [pid 6899] +++ exited with 0 +++ [pid 4998] lstat("./158/file0", [pid 4997] fstat(4, [pid 6902] <... close resumed>) = 0 [pid 6901] <... ioctl resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6899, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(4, [pid 4997] close(4 [pid 4993] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] fstat(3, [pid 4998] getdents64(4, [pid 4997] rmdir("./158/file0" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4998] getdents64(4, [pid 4997] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6902] creat("./bus", 000 [pid 6901] close(4 [pid 6900] +++ exited with 0 +++ [pid 4998] close(4 [pid 4997] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6901] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] lstat("./158/binderfs", [pid 6901] creat("./bus", 000 [pid 4998] rmdir("./158/file0" [pid 4997] rmdir("./158" [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6900, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6902] <... creat resumed>) = 4 [pid 4998] <... rmdir resumed>) = 0 [ 170.989663][ T6908] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.000341][ T6907] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] <... rmdir resumed>) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] unlink("./158/binderfs" [pid 6902] unlink("./bus" [pid 4998] getdents64(3, [pid 4997] mkdir("./159", 0777 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 6902] <... unlink resumed>) = 0 [pid 6901] <... creat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4993] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6902] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6901] unlink("./bus" [pid 4998] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] rmdir("./158" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6901] <... unlink resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] mkdir("./159", 0777 [pid 4997] close(3 [pid 4994] <... openat resumed>) = 3 [pid 6901] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] fstat(3, [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4994] getdents64(3, [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6909 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4994] lstat("./157/binderfs", [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 6902] <... pwritev2 resumed>) = 65007 [pid 4994] unlink("./157/binderfs"./strace-static-x86_64: Process 6909 attached [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6910 [pid 4994] <... unlink resumed>) = 0 [pid 6909] chdir("./159" [pid 4994] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6909] <... chdir resumed>) = 0 [pid 6902] exit_group(0 [pid 6909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6909] setpgid(0, 0) = 0 [pid 6909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6902] <... exit_group resumed>) = ? [pid 6909] <... openat resumed>) = 3 [pid 6901] <... pwritev2 resumed>) = 65007 [pid 6909] write(3, "1000", 4./strace-static-x86_64: Process 6910 attached ) = 4 [pid 6910] chdir("./159" [pid 6909] close(3 [pid 6910] <... chdir resumed>) = 0 [pid 6909] <... close resumed>) = 0 [pid 6910] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6909] symlink("/dev/binderfs", "./binderfs" [pid 6910] <... prctl resumed>) = 0 [pid 6909] <... symlink resumed>) = 0 [pid 4993] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6910] setpgid(0, 0 [pid 6909] memfd_create("syzkaller", 0 [pid 6910] <... setpgid resumed>) = 0 [pid 6909] <... memfd_create resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6901] exit_group(0 [pid 6910] <... openat resumed>) = 3 [pid 6909] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] lstat("./158/file0", [pid 6910] write(3, "1000", 4 [pid 6901] <... exit_group resumed>) = ? [pid 6910] <... write resumed>) = 4 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6910] close(3) = 0 [pid 4993] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6910] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6910] <... symlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6910] memfd_create("syzkaller", 0 [pid 4993] <... openat resumed>) = 4 [pid 6910] <... memfd_create resumed>) = 3 [pid 4993] fstat(4, [pid 6910] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6910] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./158/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3 [pid 6901] +++ exited with 0 +++ [pid 4993] <... close resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6901, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] rmdir("./158" [pid 6902] +++ exited with 0 +++ [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... rmdir resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6902, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] mkdir("./159", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4996] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4993] close(3 [pid 4996] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, [pid 4993] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] fstat(3, [pid 4995] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6911 [pid 4996] getdents64(3, [pid 4995] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6909] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./154/binderfs", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] lstat("./158/binderfs", [pid 4995] unlink("./154/binderfs"./strace-static-x86_64: Process 6911 attached [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 6911] chdir("./159" [pid 6910] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] unlink("./158/binderfs" [pid 4995] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6911] <... chdir resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6911] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6911] <... prctl resumed>) = 0 [pid 6911] setpgid(0, 0 [pid 4994] lstat("./157/file0", [pid 6911] <... setpgid resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6911] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6911] write(3, "1000", 4 [pid 4994] fstat(4, [pid 6911] <... write resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6911] close(3 [pid 4994] getdents64(4, [pid 6911] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6911] symlink("/dev/binderfs", "./binderfs" [pid 4994] getdents64(4, [pid 6911] <... symlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 6911] memfd_create("syzkaller", 0 [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./157/file0" [pid 6911] <... memfd_create resumed>) = 3 [pid 6911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... rmdir resumed>) = 0 [pid 6911] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./157") = 0 [pid 4994] mkdir("./158", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6912 ./strace-static-x86_64: Process 6912 attached [pid 4995] <... umount2 resumed>) = 0 [pid 6912] chdir("./158") = 0 [pid 6912] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... umount2 resumed>) = 0 [pid 6912] <... prctl resumed>) = 0 [pid 6912] setpgid(0, 0) = 0 [pid 6912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4995] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6912] write(3, "1000", 4 [pid 6909] <... write resumed>) = 2097152 [pid 6912] <... write resumed>) = 4 [pid 6909] munmap(0x7f46b9f9b000, 2097152 [pid 6912] close(3 [pid 6910] <... write resumed>) = 2097152 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6912] <... close resumed>) = 0 [pid 6909] <... munmap resumed>) = 0 [pid 6912] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4995] lstat("./154/file0", [pid 6912] memfd_create("syzkaller", 0 [pid 6909] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6912] <... memfd_create resumed>) = 3 [pid 6909] <... openat resumed>) = 4 [pid 6912] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6909] ioctl(4, LOOP_SET_FD, 3 [pid 6912] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6910] munmap(0x7f46b9f9b000, 2097152 [pid 4996] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6910] <... munmap resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6910] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] lstat("./158/file0", [pid 6910] <... openat resumed>) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6910] ioctl(4, LOOP_SET_FD, 3 [pid 6909] <... ioctl resumed>) = 0 [ 171.257553][ T6909] loop4: detected capacity change from 0 to 4096 [pid 4996] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6911] <... write resumed>) = 2097152 [pid 6909] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 4 [pid 6909] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6909] mkdir("./file0", 0777 [pid 4996] <... openat resumed>) = 4 [pid 6909] <... mkdir resumed>) = 0 [pid 4996] fstat(4, [pid 4995] fstat(4, [pid 6909] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 6911] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4995] getdents64(4, [pid 4996] rmdir("./158/file0") = 0 [pid 4996] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./158" [pid 6911] <... munmap resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4996] mkdir("./159", 0777) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6911] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6911] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 3 [pid 4995] close(4 [pid 6911] ioctl(4, LOOP_SET_FD, 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... close resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] rmdir("./154/file0" [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6913 [pid 6910] <... ioctl resumed>) = 0 [pid 6910] close(3) = 0 [pid 6910] mkdir("./file0", 0777) = 0 [pid 6912] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... rmdir resumed>) = 0 [pid 6910] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [ 171.299928][ T6910] loop5: detected capacity change from 0 to 4096 [ 171.319219][ T6909] NILFS (loop4): invalid segment: Checksum error in segment payload [ 171.335650][ T6911] loop0: detected capacity change from 0 to 4096 [pid 4995] rmdir("./154") = 0 ./strace-static-x86_64: Process 6913 attached [pid 6911] <... ioctl resumed>) = 0 [pid 6913] chdir("./159" [pid 6911] close(3 [pid 4995] mkdir("./155", 0777 [pid 6913] <... chdir resumed>) = 0 [pid 6911] <... close resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 6911] mkdir("./file0", 0777 [pid 6913] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6913] <... prctl resumed>) = 0 [pid 6911] <... mkdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 6913] setpgid(0, 0 [pid 6911] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6913] <... setpgid resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6913] write(3, "1000", 4 [pid 4995] close(3 [pid 6913] <... write resumed>) = 4 [pid 4995] <... close resumed>) = 0 [pid 6913] close(3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6913] <... close resumed>) = 0 [pid 6913] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6914 [pid 6913] <... symlink resumed>) = 0 [pid 6913] memfd_create("syzkaller", 0) = 3 [pid 6913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6914 attached [pid 6914] chdir("./155") = 0 [pid 6912] <... write resumed>) = 2097152 [pid 6914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 171.359566][ T6909] NILFS (loop4): trying rollback from an earlier position [ 171.363968][ T6910] NILFS (loop5): invalid segment: Checksum error in segment payload [ 171.388662][ T6911] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6914] setpgid(0, 0) = 0 [pid 6914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6914] write(3, "1000", 4) = 4 [pid 6914] close(3) = 0 [pid 6914] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6914] memfd_create("syzkaller", 0 [pid 6912] munmap(0x7f46b9f9b000, 2097152 [pid 6914] <... memfd_create resumed>) = 3 [pid 6912] <... munmap resumed>) = 0 [pid 6914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6912] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6912] ioctl(4, LOOP_SET_FD, 3 [pid 6913] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6912] <... ioctl resumed>) = 0 [pid 6912] close(3) = 0 [pid 6912] mkdir("./file0", 0777) = 0 [ 171.413276][ T6910] NILFS (loop5): trying rollback from an earlier position [ 171.428809][ T6909] NILFS (loop4): recovery complete [ 171.435595][ T6912] loop1: detected capacity change from 0 to 4096 [ 171.439147][ T6911] NILFS (loop0): trying rollback from an earlier position [pid 6912] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6909] <... mount resumed>) = 0 [pid 6909] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6909] chdir("./file0" [pid 6914] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6909] <... chdir resumed>) = 0 [pid 6909] ioctl(4, LOOP_CLR_FD) = 0 [pid 6909] close(4 [pid 6913] <... write resumed>) = 2097152 [pid 6909] <... close resumed>) = 0 [pid 6913] munmap(0x7f46b9f9b000, 2097152 [ 171.467211][ T6915] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.482797][ T6912] NILFS (loop1): invalid segment: Checksum error in segment payload [ 171.485860][ T6911] NILFS (loop0): recovery complete [ 171.498419][ T6910] NILFS (loop5): recovery complete [ 171.499949][ T6912] NILFS (loop1): trying rollback from an earlier position [pid 6909] creat("./bus", 000 [pid 6913] <... munmap resumed>) = 0 [pid 6913] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6911] <... mount resumed>) = 0 [pid 6909] <... creat resumed>) = 4 [pid 6913] <... openat resumed>) = 4 [pid 6911] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6909] unlink("./bus" [pid 6913] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6911] <... openat resumed>) = 3 [pid 6909] <... unlink resumed>) = 0 [pid 6914] <... write resumed>) = 2097152 [pid 6914] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6914] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6914] ioctl(4, LOOP_SET_FD, 3 [pid 6913] close(3 [pid 6911] chdir("./file0" [pid 6909] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6910] <... mount resumed>) = 0 [pid 6910] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6910] chdir("./file0") = 0 [pid 6910] ioctl(4, LOOP_CLR_FD) = 0 [pid 6910] close(4 [pid 6913] <... close resumed>) = 0 [pid 6911] <... chdir resumed>) = 0 [pid 6910] <... close resumed>) = 0 [pid 6910] creat("./bus", 000 [pid 6913] mkdir("./file0", 0777 [pid 6911] ioctl(4, LOOP_CLR_FD) = 0 [pid 6913] <... mkdir resumed>) = 0 [pid 6911] close(4) = 0 [pid 6913] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6911] creat("./bus", 000 [pid 6914] <... ioctl resumed>) = 0 [pid 6909] <... pwritev2 resumed>) = 65007 [ 171.518241][ T6916] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.532644][ T6913] loop3: detected capacity change from 0 to 4096 [ 171.542133][ T6917] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.552695][ T6914] loop2: detected capacity change from 0 to 4096 [ 171.558262][ T6912] NILFS (loop1): recovery complete [pid 6909] exit_group(0 [pid 6914] close(3 [pid 6910] <... creat resumed>) = 4 [pid 6909] <... exit_group resumed>) = ? [pid 6914] <... close resumed>) = 0 [pid 6914] mkdir("./file0", 0777) = 0 [pid 6914] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6912] <... mount resumed>) = 0 [pid 6910] unlink("./bus" [pid 6912] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6910] <... unlink resumed>) = 0 [pid 6911] <... creat resumed>) = 4 [pid 6911] unlink("./bus" [pid 6912] chdir("./file0" [pid 6910] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6909] +++ exited with 0 +++ [pid 6912] <... chdir resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6909, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6912] ioctl(4, LOOP_CLR_FD [pid 6911] <... unlink resumed>) = 0 [pid 4997] getdents64(3, [pid 6912] <... ioctl resumed>) = 0 [pid 6911] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6910] <... pwritev2 resumed>) = 65007 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6912] close(4 [pid 6910] exit_group(0 [pid 4997] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6912] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./159/binderfs", [pid 6912] creat("./bus", 000 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./159/binderfs" [pid 6910] <... exit_group resumed>) = ? [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6911] <... pwritev2 resumed>) = 65007 [pid 6911] exit_group(0) = ? [ 171.588193][ T6913] NILFS (loop3): invalid segment: Checksum error in segment payload [ 171.599666][ T6918] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.615905][ T6914] NILFS (loop2): invalid segment: Checksum error in segment payload [ 171.623052][ T6913] NILFS (loop3): trying rollback from an earlier position [pid 6911] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6911, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6912] <... creat resumed>) = 4 [pid 4993] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6912] unlink("./bus" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6912] <... unlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6912] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... openat resumed>) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6910] +++ exited with 0 +++ [pid 4993] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6910, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./159/binderfs" [pid 4998] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6913] <... mount resumed>) = 0 [pid 4998] unlink("./159/binderfs" [pid 6913] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... unlink resumed>) = 0 [pid 6913] <... openat resumed>) = 3 [pid 4998] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6913] chdir("./file0") = 0 [pid 6913] ioctl(4, LOOP_CLR_FD) = 0 [pid 6913] close(4) = 0 [ 171.672771][ T6914] NILFS (loop2): trying rollback from an earlier position [ 171.685799][ T6913] NILFS (loop3): recovery complete [ 171.705916][ T6914] NILFS (loop2): recovery complete [pid 6913] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = 0 [pid 6912] <... pwritev2 resumed>) = 65007 [pid 6912] exit_group(0 [pid 6914] <... mount resumed>) = 0 [pid 6914] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6914] chdir("./file0") = 0 [pid 6914] ioctl(4, LOOP_CLR_FD [pid 6912] <... exit_group resumed>) = ? [pid 6914] <... ioctl resumed>) = 0 [pid 6914] close(4) = 0 [pid 6912] +++ exited with 0 +++ [pid 4997] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6914] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6912, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=2 /* 0.02 s */} --- [pid 4997] lstat("./159/file0", [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... umount2 resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4997] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./159/file0", [pid 4998] <... umount2 resumed>) = 0 [pid 4997] fstat(4, [pid 4994] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 171.732320][ T6919] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 171.745385][ T6920] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] getdents64(4, [pid 4994] fstat(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./159/file0", [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6914] <... creat resumed>) = 4 [pid 6913] <... creat resumed>) = 4 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4994] getdents64(3, [pid 4993] <... openat resumed>) = 4 [pid 6914] unlink("./bus" [pid 6913] unlink("./bus" [pid 4998] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] fstat(4, [pid 6914] <... unlink resumed>) = 0 [pid 6913] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(4 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6914] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6913] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4994] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4998] <... openat resumed>) = 4 [pid 4997] rmdir("./159/file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] fstat(4, [pid 4997] <... rmdir resumed>) = 0 [pid 4994] lstat("./158/binderfs", [pid 4993] getdents64(4, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] close(3 [pid 4994] unlink("./158/binderfs" [pid 4993] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 4997] <... close resumed>) = 0 [pid 4993] rmdir("./159/file0" [pid 6913] <... pwritev2 resumed>) = 65007 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] rmdir("./159" [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] close(4 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 6913] exit_group(0 [pid 4998] <... close resumed>) = 0 [pid 4997] mkdir("./160", 0777 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./159/file0" [pid 4997] <... mkdir resumed>) = 0 [pid 4993] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] <... openat resumed>) = 3 [pid 4993] rmdir("./159" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] mkdir("./160", 0777 [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] rmdir("./159" [pid 4997] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... rmdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... openat resumed>) = 3 [pid 4998] mkdir("./160", 0777 [pid 4993] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 6921 attached [pid 6914] <... pwritev2 resumed>) = 65007 [pid 6913] <... exit_group resumed>) = ? [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6921 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6921] chdir("./160" [pid 6914] exit_group(0 [pid 6913] +++ exited with 0 +++ [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3 [pid 6921] <... chdir resumed>) = 0 [pid 6914] <... exit_group resumed>) = ? [pid 4998] <... openat resumed>) = 3 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6913, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 6921] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6914] +++ exited with 0 +++ [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] lstat("./158/file0", [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6921] <... prctl resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6921] setpgid(0, 0 [pid 4998] close(3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6914, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4994] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6921] <... setpgid resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6922 [pid 6921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... restart_syscall resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6921] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 4 [pid 6921] write(3, "1000", 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] fstat(4, ./strace-static-x86_64: Process 6922 attached [pid 6921] <... write resumed>) = 4 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6923 [pid 4996] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6922] chdir("./160" [pid 6921] close(3 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, ./strace-static-x86_64: Process 6923 attached [pid 6922] <... chdir resumed>) = 0 [pid 6921] <... close resumed>) = 0 [pid 4996] fstat(3, [pid 4995] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6923] chdir("./160" [pid 6922] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6921] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4994] getdents64(4, [pid 6923] <... chdir resumed>) = 0 [pid 6922] <... prctl resumed>) = 0 [pid 6921] <... symlink resumed>) = 0 [pid 4995] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6923] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6921] memfd_create("syzkaller", 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(4 [pid 6923] <... prctl resumed>) = 0 [pid 6921] <... memfd_create resumed>) = 3 [pid 4995] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 6923] setpgid(0, 0 [pid 6922] setpgid(0, 0 [pid 6921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] rmdir("./158/file0" [pid 6923] <... setpgid resumed>) = 0 [pid 6922] <... setpgid resumed>) = 0 [pid 6921] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 6922] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6922] write(3, "1000", 4 [pid 4996] lstat("./159/binderfs", [pid 6922] <... write resumed>) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6922] close(3 [pid 4996] unlink("./159/binderfs" [pid 6922] <... close resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 6922] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6923] <... openat resumed>) = 3 [pid 6922] <... symlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 6923] write(3, "1000", 4 [pid 6922] memfd_create("syzkaller", 0 [pid 4995] lstat("./155/binderfs", [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6922] <... memfd_create resumed>) = 3 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] close(3 [pid 6922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6923] <... write resumed>) = 4 [pid 6921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] unlink("./155/binderfs" [pid 4994] <... close resumed>) = 0 [pid 6923] close(3 [pid 4995] <... unlink resumed>) = 0 [pid 4994] rmdir("./158" [pid 6923] <... close resumed>) = 0 [pid 4995] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 6923] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] mkdir("./159", 0777 [pid 6923] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... mkdir resumed>) = 0 [pid 6923] memfd_create("syzkaller", 0 [pid 4996] lstat("./159/file0", [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6923] <... memfd_create resumed>) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6923] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6922] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4996] <... openat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 4996] fstat(4, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6924 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./159/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./159") = 0 [pid 4996] mkdir("./160", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 ./strace-static-x86_64: Process 6924 attached [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6924] chdir("./159" [pid 6923] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6924] <... chdir resumed>) = 0 [pid 4996] close(3 [pid 6924] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... close resumed>) = 0 [pid 6924] <... prctl resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6924] setpgid(0, 0) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6925 [pid 6924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6924] write(3, "1000", 4) = 4 [pid 6924] close(3) = 0 [pid 6924] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 6925 attached ) = 0 [pid 6925] chdir("./160" [pid 6924] memfd_create("syzkaller", 0 [pid 6925] <... chdir resumed>) = 0 [pid 6924] <... memfd_create resumed>) = 3 [pid 6925] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6925] <... prctl resumed>) = 0 [pid 6924] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6925] setpgid(0, 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6925] <... setpgid resumed>) = 0 [pid 6925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6925] <... openat resumed>) = 3 [pid 6925] write(3, "1000", 4) = 4 [pid 6925] close(3) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6925] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6921] <... write resumed>) = 2097152 [pid 4995] lstat("./155/file0", [pid 6925] memfd_create("syzkaller", 0) = 3 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6921] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... openat resumed>) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 6925] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6921] <... munmap resumed>) = 0 [pid 6924] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6923] <... write resumed>) = 2097152 [pid 6922] <... write resumed>) = 2097152 [pid 4995] getdents64(4, [pid 6921] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6921] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6921] close(3) = 0 [pid 6921] mkdir("./file0", 0777) = 0 [pid 6921] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6923] munmap(0x7f46b9f9b000, 2097152 [pid 6922] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6922] <... munmap resumed>) = 0 [pid 4995] close(4 [pid 6922] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./155/file0" [pid 6922] ioctl(4, LOOP_SET_FD, 3 [pid 4995] <... rmdir resumed>) = 0 [pid 6923] <... munmap resumed>) = 0 [pid 6923] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6923] ioctl(4, LOOP_SET_FD, 3 [pid 4995] getdents64(3, [pid 6922] <... ioctl resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6922] close(3 [pid 4995] close(3 [pid 6922] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./155" [pid 6922] mkdir("./file0", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./156", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6922] <... mkdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6926 [ 172.064618][ T6921] loop4: detected capacity change from 0 to 4096 [ 172.078687][ T6922] loop0: detected capacity change from 0 to 4096 [ 172.084574][ T6923] loop5: detected capacity change from 0 to 4096 [pid 6922] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6925] <... write resumed>) = 2097152 [pid 6924] <... write resumed>) = 2097152 ./strace-static-x86_64: Process 6926 attached [pid 6926] chdir("./156") = 0 [pid 6926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6926] setpgid(0, 0) = 0 [pid 6926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6926] write(3, "1000", 4) = 4 [pid 6926] close(3) = 0 [pid 6926] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6926] memfd_create("syzkaller", 0 [pid 6925] munmap(0x7f46b9f9b000, 2097152 [pid 6926] <... memfd_create resumed>) = 3 [pid 6925] <... munmap resumed>) = 0 [pid 6926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6923] <... ioctl resumed>) = 0 [pid 6925] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6924] munmap(0x7f46b9f9b000, 2097152 [pid 6923] close(3 [pid 6925] <... openat resumed>) = 4 [pid 6923] <... close resumed>) = 0 [pid 6925] ioctl(4, LOOP_SET_FD, 3 [pid 6923] mkdir("./file0", 0777 [pid 6924] <... munmap resumed>) = 0 [pid 6923] <... mkdir resumed>) = 0 [pid 6923] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6924] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [ 172.112465][ T6921] NILFS (loop4): invalid segment: Checksum error in segment payload [ 172.132520][ T6922] NILFS (loop0): invalid segment: Checksum error in segment payload [ 172.136500][ T6925] loop3: detected capacity change from 0 to 4096 [ 172.142335][ T6922] NILFS (loop0): trying rollback from an earlier position [ 172.151902][ T6921] NILFS (loop4): trying rollback from an earlier position [pid 6924] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6924] close(3) = 0 [pid 6925] <... ioctl resumed>) = 0 [pid 6924] mkdir("./file0", 0777 [pid 6925] close(3) = 0 [pid 6925] mkdir("./file0", 0777 [pid 6924] <... mkdir resumed>) = 0 [pid 6924] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6925] <... mkdir resumed>) = 0 [pid 6925] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 172.165275][ T6924] loop1: detected capacity change from 0 to 4096 [ 172.172597][ T6923] NILFS (loop5): invalid segment: Checksum error in segment payload [ 172.174853][ T6922] NILFS (loop0): recovery complete [ 172.199441][ T6923] NILFS (loop5): trying rollback from an earlier position [ 172.200406][ T6924] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6926] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6922] <... mount resumed>) = 0 [pid 6922] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6922] chdir("./file0") = 0 [pid 6922] ioctl(4, LOOP_CLR_FD) = 0 [ 172.216937][ T6925] NILFS (loop3): invalid segment: Checksum error in segment payload [ 172.218112][ T6927] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.236198][ T6924] NILFS (loop1): trying rollback from an earlier position [ 172.240422][ T6921] NILFS (loop4): recovery complete [ 172.251811][ T6925] NILFS (loop3): trying rollback from an earlier position [ 172.253487][ T6924] NILFS (loop1): recovery complete [pid 6922] close(4) = 0 [pid 6922] creat("./bus", 000) = 4 [pid 6922] unlink("./bus") = 0 [pid 6922] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6923] <... mount resumed>) = 0 [pid 6923] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6923] chdir("./file0") = 0 [pid 6923] ioctl(4, LOOP_CLR_FD) = 0 [pid 6923] close(4) = 0 [pid 6923] creat("./bus", 000 [pid 6921] <... mount resumed>) = 0 [pid 6921] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6921] chdir("./file0") = 0 [pid 6921] ioctl(4, LOOP_CLR_FD) = 0 [pid 6921] close(4) = 0 [ 172.270593][ T6923] NILFS (loop5): recovery complete [ 172.277374][ T6925] NILFS (loop3): recovery complete [ 172.293731][ T6928] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.304417][ T6929] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6921] creat("./bus", 000 [pid 6924] <... mount resumed>) = 0 [pid 6924] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6924] chdir("./file0") = 0 [pid 6924] ioctl(4, LOOP_CLR_FD) = 0 [pid 6924] close(4) = 0 [pid 6924] creat("./bus", 000 [pid 6926] <... write resumed>) = 2097152 [pid 6926] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6926] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6926] ioctl(4, LOOP_SET_FD, 3 [pid 6922] <... pwritev2 resumed>) = 65007 [pid 6922] exit_group(0) = ? [pid 6923] <... creat resumed>) = 4 [pid 6923] unlink("./bus") = 0 [pid 6923] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6922] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6922, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6925] <... mount resumed>) = 0 [pid 6925] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6925] chdir("./file0") = 0 [pid 6925] ioctl(4, LOOP_CLR_FD) = 0 [pid 6925] close(4) = 0 [pid 6925] creat("./bus", 000 [pid 6926] <... ioctl resumed>) = 0 [pid 6926] close(3) = 0 [pid 6926] mkdir("./file0", 0777 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 6921] <... creat resumed>) = 4 [pid 4993] fstat(3, [pid 6921] unlink("./bus" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6921] <... unlink resumed>) = 0 [pid 4993] getdents64(3, [pid 6921] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6925] <... creat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6926] <... mkdir resumed>) = 0 [pid 6925] unlink("./bus" [pid 6926] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6925] <... unlink resumed>) = 0 [pid 6923] <... pwritev2 resumed>) = 65007 [pid 4993] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [ 172.309524][ T6930] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.324797][ T6926] loop2: detected capacity change from 0 to 4096 [ 172.355588][ T6931] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6925] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6923] exit_group(0) = ? [pid 6921] <... pwritev2 resumed>) = 65007 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6924] <... creat resumed>) = 4 [pid 6924] unlink("./bus" [pid 6921] exit_group(0 [pid 4993] lstat("./160/binderfs", [pid 6924] <... unlink resumed>) = 0 [pid 6921] <... exit_group resumed>) = ? [pid 6924] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6923] +++ exited with 0 +++ [pid 4993] unlink("./160/binderfs" [pid 6921] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6923, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6921, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4993] <... unlink resumed>) = 0 [pid 4998] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6924] <... pwritev2 resumed>) = 65007 [pid 6924] exit_group(0) = ? [pid 6925] <... pwritev2 resumed>) = 65007 [pid 4998] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6925] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 6925] <... exit_group resumed>) = ? [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] fstat(3, [pid 6924] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6924, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, [pid 4998] lstat("./160/binderfs", [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6925] +++ exited with 0 +++ [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] getdents64(3, [pid 4994] getdents64(3, [pid 4998] unlink("./160/binderfs" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6925, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [ 172.413730][ T6926] NILFS (loop2): invalid segment: Checksum error in segment payload [ 172.445690][ T6926] NILFS (loop2): trying rollback from an earlier position [pid 4998] <... unlink resumed>) = 0 [pid 4997] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./159/binderfs", [pid 4998] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] lstat("./160/binderfs", [pid 4994] unlink("./159/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4997] unlink("./160/binderfs" [pid 4994] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [ 172.492291][ T6926] NILFS (loop2): recovery complete [pid 4993] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4996] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./160/file0", [pid 4996] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6926] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 6926] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] lstat("./159/file0", [pid 4993] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6926] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6926] chdir("./file0" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6926] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6926] ioctl(4, LOOP_CLR_FD [pid 4998] lstat("./160/file0", [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 4 [pid 6926] <... ioctl resumed>) = 0 [pid 4996] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [pid 6926] close(4 [pid 4993] fstat(4, [pid 4994] fstat(4, [pid 6926] <... close resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6926] creat("./bus", 000 [pid 4998] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./160/binderfs", [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6926] <... creat resumed>) = 4 [pid 4998] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = 0 [pid 4996] unlink("./160/binderfs" [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 6926] unlink("./bus" [pid 4998] <... openat resumed>) = 4 [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6926] <... unlink resumed>) = 0 [pid 4998] fstat(4, [pid 4997] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(4 [pid 4993] close(4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 4994] rmdir("./159/file0" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6926] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 172.516725][ T6932] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(4, [pid 4994] <... rmdir resumed>) = 0 [pid 4993] rmdir("./160/file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./160/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./160/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./160") = 0 [pid 4997] mkdir("./161", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6933 ./strace-static-x86_64: Process 6933 attached [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4994] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./160/file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... close resumed>) = 0 [pid 4993] close(3 [pid 4998] close(3 [pid 4994] rmdir("./159" [pid 4993] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] rmdir("./160" [pid 4998] rmdir("./160" [pid 4994] mkdir("./160", 0777 [pid 6933] chdir("./161" [pid 6926] <... pwritev2 resumed>) = 65007 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6933] <... chdir resumed>) = 0 [pid 6926] exit_group(0 [pid 4998] mkdir("./161", 0777 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] mkdir("./161", 0777 [pid 6933] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6926] <... exit_group resumed>) = ? [pid 4998] <... mkdir resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... mkdir resumed>) = 0 [pid 6933] <... prctl resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6933] setpgid(0, 0 [pid 4998] <... openat resumed>) = 3 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6933] <... setpgid resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4993] <... openat resumed>) = 3 [pid 4994] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] lstat("./160/file0", [pid 6933] <... openat resumed>) = 3 [pid 6926] +++ exited with 0 +++ [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... close resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6933] write(3, "1000", 4 [pid 4998] close(3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6926, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6933] <... write resumed>) = 4 [pid 4998] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 6933] close(3 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6934 [pid 4993] <... close resumed>) = 0 [pid 6933] <... close resumed>) = 0 [pid 4996] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6933] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6935 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 6934 attached [pid 6933] <... symlink resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6936 ./strace-static-x86_64: Process 6936 attached [pid 6934] chdir("./160" [pid 6933] memfd_create("syzkaller", 0 [pid 4996] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 3 [pid 6936] chdir("./161" [pid 6934] <... chdir resumed>) = 0 [pid 6933] <... memfd_create resumed>) = 3 [pid 4996] fstat(4, [pid 4995] fstat(3, [pid 6936] <... chdir resumed>) = 0 [pid 6934] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6936] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6934] <... prctl resumed>) = 0 [pid 6933] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] getdents64(4, [pid 4995] getdents64(3, ./strace-static-x86_64: Process 6935 attached [pid 6936] <... prctl resumed>) = 0 [pid 6934] setpgid(0, 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6936] setpgid(0, 0 [pid 6935] chdir("./161" [pid 6934] <... setpgid resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6936] <... setpgid resumed>) = 0 [pid 6935] <... chdir resumed>) = 0 [pid 6934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6935] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6934] <... openat resumed>) = 3 [pid 4996] close(4 [pid 4995] lstat("./156/binderfs", [pid 6936] <... openat resumed>) = 3 [pid 6935] <... prctl resumed>) = 0 [pid 6934] write(3, "1000", 4 [pid 4996] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6936] write(3, "1000", 4 [pid 6935] setpgid(0, 0 [pid 6934] <... write resumed>) = 4 [pid 4996] rmdir("./160/file0" [pid 4995] unlink("./156/binderfs" [pid 6935] <... setpgid resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 6935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6935] <... openat resumed>) = 3 [pid 6935] write(3, "1000", 4) = 4 [pid 6935] close(3) = 0 [pid 6935] symlink("/dev/binderfs", "./binderfs" [pid 6936] <... write resumed>) = 4 [pid 6935] <... symlink resumed>) = 0 [pid 6934] close(3 [pid 6933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 6936] close(3 [pid 6935] memfd_create("syzkaller", 0 [pid 6934] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 6936] <... close resumed>) = 0 [pid 6935] <... memfd_create resumed>) = 3 [pid 6934] symlink("/dev/binderfs", "./binderfs" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6936] symlink("/dev/binderfs", "./binderfs" [pid 6935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6934] <... symlink resumed>) = 0 [pid 4996] close(3 [pid 4995] <... umount2 resumed>) = 0 [pid 6936] <... symlink resumed>) = 0 [pid 6935] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6934] memfd_create("syzkaller", 0 [pid 4996] <... close resumed>) = 0 [pid 6936] memfd_create("syzkaller", 0 [pid 6934] <... memfd_create resumed>) = 3 [pid 4996] rmdir("./160" [pid 4995] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6936] <... memfd_create resumed>) = 3 [pid 6934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6934] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] mkdir("./161", 0777 [pid 6936] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4995] lstat("./156/file0", [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(3 [pid 6935] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6933] <... write resumed>) = 2097152 [pid 4996] <... close resumed>) = 0 [pid 4995] umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6933] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6937 [pid 6933] <... munmap resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6933] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... openat resumed>) = 4 [pid 6933] <... openat resumed>) = 4 [pid 4995] fstat(4, [pid 6933] ioctl(4, LOOP_SET_FD, 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6937 attached [pid 6937] chdir("./161" [pid 6936] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] getdents64(4, [pid 6937] <... chdir resumed>) = 0 [pid 6937] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6937] <... prctl resumed>) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 6937] setpgid(0, 0) = 0 [pid 4995] <... close resumed>) = 0 [pid 6937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6933] <... ioctl resumed>) = 0 [pid 6937] <... openat resumed>) = 3 [pid 4995] rmdir("./156/file0" [pid 6937] write(3, "1000", 4) = 4 [pid 4995] <... rmdir resumed>) = 0 [pid 6934] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6937] close(3 [pid 4995] getdents64(3, [pid 6937] <... close resumed>) = 0 [pid 6933] close(3 [pid 6937] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6933] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6937] memfd_create("syzkaller", 0) = 3 [pid 6933] mkdir("./file0", 0777 [pid 4995] close(3 [pid 6937] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] <... close resumed>) = 0 [pid 6935] <... write resumed>) = 2097152 [pid 6933] <... mkdir resumed>) = 0 [pid 4995] rmdir("./156" [pid 6933] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./157", 0777) = 0 [pid 6935] munmap(0x7f46b9f9b000, 2097152 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 6935] <... munmap resumed>) = 0 [pid 6935] openat(AT_FDCWD, "/dev/loop5", O_RDWR [ 172.745900][ T6933] loop4: detected capacity change from 0 to 4096 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6935] <... openat resumed>) = 4 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6935] ioctl(4, LOOP_SET_FD, 3 [pid 4995] close(3 [pid 6937] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6935] <... ioctl resumed>) = 0 [pid 6934] <... write resumed>) = 2097152 [pid 4995] <... close resumed>) = 0 [pid 6935] close(3 [pid 6934] munmap(0x7f46b9f9b000, 2097152 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6935] <... close resumed>) = 0 [pid 6934] <... munmap resumed>) = 0 [pid 6935] mkdir("./file0", 0777 [pid 6934] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6935] <... mkdir resumed>) = 0 [pid 6934] <... openat resumed>) = 4 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6938 ./strace-static-x86_64: Process 6938 attached [pid 6935] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6934] ioctl(4, LOOP_SET_FD, 3 [pid 6936] <... write resumed>) = 2097152 [pid 6936] munmap(0x7f46b9f9b000, 2097152 [pid 6934] <... ioctl resumed>) = 0 [ 172.796411][ T6933] NILFS (loop4): invalid segment: Checksum error in segment payload [ 172.805757][ T6935] loop5: detected capacity change from 0 to 4096 [ 172.815357][ T6933] NILFS (loop4): trying rollback from an earlier position [ 172.834733][ T6934] loop1: detected capacity change from 0 to 4096 [pid 6936] <... munmap resumed>) = 0 [pid 6936] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 6936] ioctl(4, LOOP_SET_FD, 3 [pid 6938] chdir("./157" [pid 6934] close(3 [pid 6936] <... ioctl resumed>) = 0 [pid 6936] close(3) = 0 [pid 6936] mkdir("./file0", 0777 [pid 6934] <... close resumed>) = 0 [pid 6938] <... chdir resumed>) = 0 [pid 6934] mkdir("./file0", 0777 [pid 6938] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6936] <... mkdir resumed>) = 0 [pid 6936] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6937] <... write resumed>) = 2097152 [pid 6937] munmap(0x7f46b9f9b000, 2097152 [pid 6934] <... mkdir resumed>) = 0 [pid 6938] <... prctl resumed>) = 0 [pid 6938] setpgid(0, 0 [pid 6934] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6938] <... setpgid resumed>) = 0 [pid 6938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6938] write(3, "1000", 4) = 4 [pid 6938] close(3) = 0 [pid 6938] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6938] memfd_create("syzkaller", 0) = 3 [pid 6938] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6937] <... munmap resumed>) = 0 [ 172.848361][ T6935] NILFS (loop5): invalid segment: Checksum error in segment payload [ 172.856145][ T6936] loop0: detected capacity change from 0 to 4096 [ 172.858278][ T6933] NILFS (loop4): recovery complete [ 172.868469][ T6935] NILFS (loop5): trying rollback from an earlier position [ 172.882707][ T6934] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6937] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6937] ioctl(4, LOOP_SET_FD, 3 [pid 6938] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6937] <... ioctl resumed>) = 0 [pid 6933] <... mount resumed>) = 0 [pid 6933] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6933] chdir("./file0") = 0 [pid 6933] ioctl(4, LOOP_CLR_FD) = 0 [pid 6933] close(4) = 0 [ 172.897711][ T6934] NILFS (loop1): trying rollback from an earlier position [ 172.901459][ T6937] loop3: detected capacity change from 0 to 4096 [ 172.913662][ T6939] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.925728][ T6936] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6933] creat("./bus", 000 [pid 6937] close(3) = 0 [pid 6937] mkdir("./file0", 0777) = 0 [pid 6937] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6938] <... write resumed>) = 2097152 [pid 6938] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6938] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 172.955981][ T6936] NILFS (loop0): trying rollback from an earlier position [ 172.963887][ T6935] NILFS (loop5): recovery complete [ 172.976287][ T6934] NILFS (loop1): recovery complete [ 172.981676][ T6940] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 172.994334][ T6937] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 6938] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6938] close(3) = 0 [pid 6938] mkdir("./file0", 0777) = 0 [pid 6938] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6935] <... mount resumed>) = 0 [pid 6935] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6933] <... creat resumed>) = 4 [pid 6935] <... openat resumed>) = 3 [pid 6933] unlink("./bus" [pid 6935] chdir("./file0") = 0 [pid 6935] ioctl(4, LOOP_CLR_FD) = 0 [pid 6933] <... unlink resumed>) = 0 [pid 6935] close(4 [pid 6933] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6935] <... close resumed>) = 0 [pid 6935] creat("./bus", 000) = 4 [pid 6934] <... mount resumed>) = 0 [pid 6935] unlink("./bus" [pid 6934] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6935] <... unlink resumed>) = 0 [pid 6934] <... openat resumed>) = 3 [ 173.000821][ T6938] loop2: detected capacity change from 0 to 4096 [ 173.003713][ T6937] NILFS (loop3): trying rollback from an earlier position [ 173.021745][ T6936] NILFS (loop0): recovery complete [ 173.028446][ T6941] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.044304][ T6938] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 6935] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6934] chdir("./file0") = 0 [pid 6934] ioctl(4, LOOP_CLR_FD) = 0 [pid 6934] close(4) = 0 [pid 6934] creat("./bus", 000 [pid 6935] <... pwritev2 resumed>) = 65007 [pid 6935] exit_group(0) = ? [pid 6933] <... pwritev2 resumed>) = 65007 [pid 6934] <... creat resumed>) = 4 [pid 6933] exit_group(0 [pid 6934] unlink("./bus" [pid 6933] <... exit_group resumed>) = ? [pid 6934] <... unlink resumed>) = 0 [ 173.053143][ T6938] NILFS (loop2): trying rollback from an earlier position [pid 6934] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6936] <... mount resumed>) = 0 [pid 6936] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6936] chdir("./file0") = 0 [pid 6936] ioctl(4, LOOP_CLR_FD) = 0 [pid 6934] <... pwritev2 resumed>) = 65007 [pid 6934] exit_group(0 [pid 6936] close(4 [pid 6934] <... exit_group resumed>) = ? [pid 6936] <... close resumed>) = 0 [pid 6935] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6935, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4998] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./161/binderfs" [pid 6936] creat("./bus", 000 [pid 4998] <... unlink resumed>) = 0 [pid 6937] <... mount resumed>) = 0 [ 173.089261][ T6942] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.108412][ T6937] NILFS (loop3): recovery complete [ 173.117051][ T6938] NILFS (loop2): recovery complete [ 173.123754][ T6943] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6934] +++ exited with 0 +++ [pid 6933] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6933, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, [pid 6937] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6936] <... creat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6934, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6938] <... mount resumed>) = 0 [pid 6937] <... openat resumed>) = 3 [pid 6936] unlink("./bus" [pid 4997] getdents64(3, [pid 6938] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6937] chdir("./file0" [pid 6936] <... unlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6938] <... openat resumed>) = 3 [pid 6937] <... chdir resumed>) = 0 [pid 6936] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6938] chdir("./file0" [pid 6937] ioctl(4, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./161/binderfs", [pid 6938] <... chdir resumed>) = 0 [pid 6937] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6938] ioctl(4, LOOP_CLR_FD [pid 6937] close(4 [pid 6936] <... pwritev2 resumed>) = 65007 [pid 4997] unlink("./161/binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6938] <... ioctl resumed>) = 0 [pid 6937] <... close resumed>) = 0 [pid 6936] exit_group(0 [pid 4997] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6938] close(4 [pid 6937] creat("./bus", 000 [pid 6936] <... exit_group resumed>) = ? [pid 4997] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6938] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 6938] creat("./bus", 000 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 173.138100][ T6944] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] getdents64(3, [pid 6937] <... creat resumed>) = 4 [pid 6937] unlink("./bus" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6938] <... creat resumed>) = 4 [pid 6937] <... unlink resumed>) = 0 [pid 4994] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6938] unlink("./bus" [pid 6937] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6938] <... unlink resumed>) = 0 [pid 6936] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 4994] lstat("./160/binderfs", [pid 6938] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./160/binderfs" [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6936, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./161/file0", [pid 4993] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4993] getdents64(3, [pid 6938] <... pwritev2 resumed>) = 65007 [pid 4998] fstat(4, [pid 6938] exit_group(0 [pid 6937] <... pwritev2 resumed>) = 65007 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6938] <... exit_group resumed>) = ? [pid 6937] exit_group(0 [pid 4998] getdents64(4, [pid 6937] <... exit_group resumed>) = ? [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(4 [pid 4993] lstat("./161/binderfs", [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./161/file0" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4993] unlink("./161/binderfs" [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4998] close(3 [pid 4993] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./161") = 0 [pid 4998] mkdir("./162", 0777) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./161/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6945 [pid 4997] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, [pid 6937] +++ exited with 0 +++ [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6937, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=10 /* 0.10 s */} --- [pid 4997] getdents64(4, [pid 4996] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(4 [pid 4996] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4997] rmdir("./161/file0" [pid 4996] fstat(3, ./strace-static-x86_64: Process 6945 attached [pid 6938] +++ exited with 0 +++ [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6945] chdir("./162" [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6938, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6945] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6945] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] close(3 [pid 4996] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6945] <... prctl resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6945] setpgid(0, 0 [pid 4997] rmdir("./161" [pid 4996] lstat("./161/binderfs", [pid 6945] <... setpgid resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] mkdir("./162", 0777 [pid 4996] unlink("./161/binderfs" [pid 6945] <... openat resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 6945] write(3, "1000", 4 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6945] <... write resumed>) = 4 [pid 4997] <... openat resumed>) = 3 [pid 4994] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 6945] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3) = 0 [pid 4995] openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] lstat("./160/file0", [pid 6945] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6945] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... openat resumed>) = 3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6946 [pid 6945] <... symlink resumed>) = 0 [pid 4995] fstat(3, [pid 4994] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./160/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 6946 attached [pid 6945] memfd_create("syzkaller", 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(3 [pid 6946] chdir("./162" [pid 6945] <... memfd_create resumed>) = 3 [pid 4995] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 6946] <... chdir resumed>) = 0 [pid 6945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] rmdir("./160" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6946] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6945] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 6946] <... prctl resumed>) = 0 [pid 4994] mkdir("./161", 0777 [pid 6946] setpgid(0, 0 [pid 4994] <... mkdir resumed>) = 0 [pid 6946] <... setpgid resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... openat resumed>) = 3 [pid 6946] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6946] write(3, "1000", 4 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6946] <... write resumed>) = 4 [pid 4994] close(3 [pid 6946] close(3 [pid 4994] <... close resumed>) = 0 [pid 6946] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6946] symlink("/dev/binderfs", "./binderfs" [pid 4995] lstat("./157/binderfs", [pid 4993] lstat("./161/file0", [pid 6946] <... symlink resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6947 [pid 6946] memfd_create("syzkaller", 0 [pid 4995] unlink("./157/binderfs" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6946] <... memfd_create resumed>) = 3 [pid 6946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... unlink resumed>) = 0 [pid 4993] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6946] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, ./strace-static-x86_64: Process 6947 attached 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 6947] chdir("./161" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6947] <... chdir resumed>) = 0 [pid 4993] close(4 [pid 6947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4993] <... close resumed>) = 0 [pid 6947] setpgid(0, 0 [pid 4993] rmdir("./161/file0" [pid 6947] <... setpgid resumed>) = 0 [pid 6947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] <... rmdir resumed>) = 0 [pid 6947] <... openat resumed>) = 3 [pid 4993] getdents64(3, [pid 6947] write(3, "1000", 4) = 4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6947] close(3) = 0 [pid 4993] close(3 [pid 6947] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4993] <... close resumed>) = 0 [pid 6947] memfd_create("syzkaller", 0 [pid 4993] rmdir("./161" [pid 6947] <... memfd_create resumed>) = 3 [pid 6947] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./162", 0777) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4996] lstat("./161/file0", [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4996] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6947] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6945] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6948 ./strace-static-x86_64: Process 6948 attached [pid 4996] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6948] chdir("./162" [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 6948] <... chdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6948] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6946] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] getdents64(4, [pid 6948] <... prctl resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6948] setpgid(0, 0 [pid 4996] close(4 [pid 6948] <... setpgid resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 6948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] rmdir("./161/file0" [pid 4995] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./157/file0", [pid 4996] getdents64(3, [pid 6948] <... openat resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6948] write(3, "1000", 4 [pid 4996] close(3 [pid 6948] <... write resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 6948] close(3 [pid 4996] rmdir("./161" [pid 6948] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 6948] symlink("/dev/binderfs", "./binderfs" [pid 4996] mkdir("./162", 0777 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6948] <... symlink resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6948] memfd_create("syzkaller", 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6948] <... memfd_create resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 4 [pid 6948] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] fstat(4, [pid 6948] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] close(3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6949 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./157/file0"./strace-static-x86_64: Process 6949 attached ) = 0 [pid 6949] chdir("./162" [pid 4995] getdents64(3, [pid 6949] <... chdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6949] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] close(3 [pid 6949] <... prctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6949] setpgid(0, 0 [pid 4995] rmdir("./157" [pid 6949] <... setpgid resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] mkdir("./158", 0777 [pid 6949] <... openat resumed>) = 3 [pid 4995] <... mkdir resumed>) = 0 [pid 6949] write(3, "1000", 4 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6949] <... write resumed>) = 4 [pid 4995] <... openat resumed>) = 3 [pid 6949] close(3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6949] <... close resumed>) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6949] symlink("/dev/binderfs", "./binderfs" [pid 4995] close(3 [pid 6949] <... symlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6949] memfd_create("syzkaller", 0 [pid 6948] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6946] <... write resumed>) = 2097152 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6949] <... memfd_create resumed>) = 3 [pid 6949] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6950 [pid 6949] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6945] <... write resumed>) = 2097152 ./strace-static-x86_64: Process 6950 attached [pid 6950] chdir("./158" [pid 6946] munmap(0x7f46b9f9b000, 2097152 [pid 6950] <... chdir resumed>) = 0 [pid 6950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6950] setpgid(0, 0) = 0 [pid 6946] <... munmap resumed>) = 0 [pid 6950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6946] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6945] munmap(0x7f46b9f9b000, 2097152 [pid 6950] write(3, "1000", 4 [pid 6946] <... openat resumed>) = 4 [pid 6950] <... write resumed>) = 4 [pid 6946] ioctl(4, LOOP_SET_FD, 3 [pid 6950] close(3 [pid 6946] <... ioctl resumed>) = 0 [pid 6945] <... munmap resumed>) = 0 [pid 6950] <... close resumed>) = 0 [pid 6945] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6950] symlink("/dev/binderfs", "./binderfs" [pid 6945] <... openat resumed>) = 4 [pid 6950] <... symlink resumed>) = 0 [pid 6947] <... write resumed>) = 2097152 [pid 6945] ioctl(4, LOOP_SET_FD, 3 [pid 6950] memfd_create("syzkaller", 0) = 3 [pid 6950] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6949] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6945] <... ioctl resumed>) = 0 [pid 6945] close(3) = 0 [pid 6945] mkdir("./file0", 0777) = 0 [pid 6945] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6947] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6947] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6947] ioctl(4, LOOP_SET_FD, 3 [pid 6946] close(3 [pid 6947] <... ioctl resumed>) = 0 [pid 6946] <... close resumed>) = 0 [pid 6946] mkdir("./file0", 0777) = 0 [ 173.487556][ T6946] loop4: detected capacity change from 0 to 4096 [ 173.501487][ T6945] loop5: detected capacity change from 0 to 4096 [ 173.525376][ T6947] loop1: detected capacity change from 0 to 4096 [pid 6946] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6948] <... write resumed>) = 2097152 [pid 6950] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6947] close(3) = 0 [pid 6947] mkdir("./file0", 0777) = 0 [pid 6947] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6948] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6948] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 173.546084][ T6945] NILFS (loop5): invalid segment: Checksum error in segment payload [ 173.553007][ T6946] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6948] ioctl(4, LOOP_SET_FD, 3 [pid 6949] <... write resumed>) = 2097152 [pid 6949] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6949] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6948] <... ioctl resumed>) = 0 [pid 6949] <... openat resumed>) = 4 [pid 6948] close(3 [pid 6949] ioctl(4, LOOP_SET_FD, 3 [pid 6948] <... close resumed>) = 0 [pid 6949] <... ioctl resumed>) = 0 [pid 6948] mkdir("./file0", 0777 [pid 6949] close(3) = 0 [pid 6948] <... mkdir resumed>) = 0 [ 173.591586][ T6946] NILFS (loop4): trying rollback from an earlier position [ 173.591878][ T6948] loop0: detected capacity change from 0 to 4096 [ 173.610629][ T6947] NILFS (loop1): invalid segment: Checksum error in segment payload [ 173.617915][ T6945] NILFS (loop5): trying rollback from an earlier position [ 173.634842][ T6949] loop3: detected capacity change from 0 to 4096 [pid 6950] <... write resumed>) = 2097152 [pid 6948] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6949] mkdir("./file0", 0777) = 0 [pid 6950] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6950] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6950] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6949] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6950] close(3) = 0 [ 173.643568][ T6945] NILFS (loop5): recovery complete [ 173.651830][ T6947] NILFS (loop1): trying rollback from an earlier position [ 173.655913][ T6948] NILFS (loop0): invalid segment: Checksum error in segment payload [ 173.667527][ T6950] loop2: detected capacity change from 0 to 4096 [ 173.668089][ T6948] NILFS (loop0): trying rollback from an earlier position [ 173.683858][ T6946] NILFS (loop4): recovery complete [pid 6950] mkdir("./file0", 0777) = 0 [pid 6950] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6945] <... mount resumed>) = 0 [pid 6945] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6945] chdir("./file0") = 0 [pid 6948] <... mount resumed>) = 0 [pid 6948] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6948] chdir("./file0") = 0 [pid 6948] ioctl(4, LOOP_CLR_FD) = 0 [pid 6948] close(4) = 0 [ 173.686924][ T6949] NILFS (loop3): invalid segment: Checksum error in segment payload [ 173.689959][ T6951] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.700961][ T6949] NILFS (loop3): trying rollback from an earlier position [ 173.718591][ T6948] NILFS (loop0): recovery complete [ 173.726362][ T6952] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6948] creat("./bus", 000 [pid 6945] ioctl(4, LOOP_CLR_FD [pid 6946] <... mount resumed>) = 0 [pid 6945] <... ioctl resumed>) = 0 [pid 6946] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6945] close(4 [pid 6946] chdir("./file0" [pid 6945] <... close resumed>) = 0 [pid 6946] <... chdir resumed>) = 0 [pid 6945] creat("./bus", 000 [pid 6946] ioctl(4, LOOP_CLR_FD) = 0 [pid 6946] close(4) = 0 [ 173.739683][ T6947] NILFS (loop1): recovery complete [ 173.749726][ T6953] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 173.765594][ T6950] NILFS (loop2): invalid segment: Checksum error in segment payload [ 173.783193][ T6954] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6946] creat("./bus", 000 [pid 6947] <... mount resumed>) = 0 [pid 6948] <... creat resumed>) = 4 [pid 6948] unlink("./bus" [pid 6947] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6947] chdir("./file0") = 0 [pid 6947] ioctl(4, LOOP_CLR_FD) = 0 [pid 6947] close(4) = 0 [pid 6947] creat("./bus", 000 [pid 6946] <... creat resumed>) = 4 [pid 6948] <... unlink resumed>) = 0 [pid 6946] unlink("./bus" [pid 6948] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6946] <... unlink resumed>) = 0 [pid 6946] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6947] <... creat resumed>) = 4 [pid 6947] unlink("./bus") = 0 [pid 6947] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6945] <... creat resumed>) = 4 [pid 6945] unlink("./bus" [pid 6948] <... pwritev2 resumed>) = 65007 [ 173.788215][ T6950] NILFS (loop2): trying rollback from an earlier position [ 173.802917][ T6949] NILFS (loop3): recovery complete [pid 6945] <... unlink resumed>) = 0 [pid 6949] <... mount resumed>) = 0 [pid 6946] <... pwritev2 resumed>) = 65007 [pid 6949] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6948] exit_group(0 [pid 6949] <... openat resumed>) = 3 [pid 6949] chdir("./file0") = 0 [pid 6949] ioctl(4, LOOP_CLR_FD) = 0 [pid 6949] close(4) = 0 [pid 6949] creat("./bus", 000 [pid 6945] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6948] <... exit_group resumed>) = ? [pid 6946] exit_group(0) = ? [pid 6947] <... pwritev2 resumed>) = 65007 [pid 6947] exit_group(0) = ? [pid 6946] +++ exited with 0 +++ [pid 6945] <... pwritev2 resumed>) = 65007 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6946, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 6945] exit_group(0 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 6945] <... exit_group resumed>) = ? [pid 4997] <... restart_syscall resumed>) = 0 [pid 6948] +++ exited with 0 +++ [pid 6947] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6947, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, [pid 6945] +++ exited with 0 +++ [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6949] <... creat resumed>) = 4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6945, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=7 /* 0.07 s */} --- [pid 4994] getdents64(3, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6948, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 6949] unlink("./bus" [pid 4997] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [ 173.852704][ T6955] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6949] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... restart_syscall resumed>) = 0 [pid 6949] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./161/binderfs", [pid 4997] <... openat resumed>) = 3 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] fstat(3, [pid 4998] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./161/binderfs" [pid 4993] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6949] <... pwritev2 resumed>) = 65007 [pid 4998] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(3, [pid 4994] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6949] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6949] <... exit_group resumed>) = ? [pid 4998] fstat(3, [pid 4997] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(3, [pid 4997] lstat("./162/binderfs", [pid 4994] <... umount2 resumed>) = 0 [pid 4993] fstat(3, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] unlink("./162/binderfs" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./162/binderfs", [pid 4997] <... unlink resumed>) = 0 [pid 4994] lstat("./161/file0", [pid 4993] getdents64(3, [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] unlink("./162/binderfs" [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... unlink resumed>) = 0 [pid 4993] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./162/binderfs") = 0 [pid 4993] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6949] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6949, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [ 173.961728][ T6950] NILFS (loop2): recovery complete [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4994] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... openat resumed>) = 4 [pid 4996] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] lstat("./162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] getdents64(4, [pid 4996] unlink("./162/binderfs") = 0 [pid 4996] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./162/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(4) = 0 [pid 4998] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 6950] <... mount resumed>) = 0 [pid 4994] rmdir("./161/file0" [pid 6950] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6950] chdir("./file0" [pid 4994] <... rmdir resumed>) = 0 [pid 6950] <... chdir resumed>) = 0 [pid 4994] getdents64(3, [pid 6950] ioctl(4, LOOP_CLR_FD) = 0 [pid 6950] close(4) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6950] creat("./bus", 000 [pid 4994] close(3) = 0 [pid 4994] rmdir("./161" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] mkdir("./162", 0777 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(4) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... mkdir resumed>) = 0 [pid 4993] lstat("./162/file0", [pid 6950] <... creat resumed>) = 4 [pid 4998] rmdir("./162/file0" [pid 4997] lstat("./162/file0", [pid 4996] lstat("./162/file0", [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6950] unlink("./bus" [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6950] <... unlink resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6950] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] getdents64(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4993] <... openat resumed>) = 4 [pid 4997] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 4993] fstat(4, [pid 4997] fstat(4, [pid 4996] fstat(4, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6957 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4996] close(4 [pid 4998] close(3 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./162" [pid 4997] rmdir("./162/file0" [pid 4996] rmdir("./162/file0" [pid 4993] rmdir("./162/file0" [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4998] mkdir("./163", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4993] <... rmdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(3, [pid 4993] getdents64(3, [pid 4998] <... openat resumed>) = 3 [pid 4997] close(3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 4993] close(3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] rmdir("./162" [pid 4996] <... close resumed>) = 0 [pid 4998] close(3 [pid 4993] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] rmdir("./162" [pid 4993] rmdir("./162" [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] mkdir("./163", 0777 [pid 6950] <... pwritev2 resumed>) = 65007 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6957 attached [pid 6950] exit_group(0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6958 [pid 6957] chdir("./162" [pid 6950] <... exit_group resumed>) = ? [pid 6957] <... chdir resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] mkdir("./163", 0777 [pid 4993] mkdir("./163", 0777 [pid 6957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6957] setpgid(0, 0) = 0 [pid 6957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6957] write(3, "1000", 4./strace-static-x86_64: Process 6958 attached ) = 4 [ 174.037602][ T6956] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... mkdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 6958] chdir("./163" [pid 6957] close(3 [pid 6950] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6958] <... chdir resumed>) = 0 [pid 6957] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6958] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6957] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6958] <... prctl resumed>) = 0 [pid 4997] close(3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6958] setpgid(0, 0 [pid 4997] <... close resumed>) = 0 [pid 4996] close(3 [pid 4993] close(3 [pid 6958] <... setpgid resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 6958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6957] <... symlink resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6950, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6958] <... openat resumed>) = 3 [pid 6957] memfd_create("syzkaller", 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6959 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 6958] write(3, "1000", 4 [pid 6957] <... memfd_create resumed>) = 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6960 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6961 [pid 6958] <... write resumed>) = 4 [pid 6957] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6958] close(3) = 0 [pid 6957] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6958] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6958] memfd_create("syzkaller", 0) = 3 [pid 6958] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 6960 attached ) = -1 EINVAL (Invalid argument) [pid 6960] chdir("./163" [pid 4995] openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6960] <... chdir resumed>) = 0 [pid 6960] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... openat resumed>) = 3 [pid 6960] <... prctl resumed>) = 0 [pid 4995] fstat(3, [pid 6960] setpgid(0, 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6960] <... setpgid resumed>) = 0 [pid 4995] getdents64(3, [pid 6960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6960] <... openat resumed>) = 3 [pid 4995] umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6960] write(3, "1000", 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6960] <... write resumed>) = 4 [pid 4995] lstat("./158/binderfs", [pid 6960] close(3) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6960] symlink("/dev/binderfs", "./binderfs" [pid 4995] unlink("./158/binderfs" [pid 6960] <... symlink resumed>) = 0 [pid 6960] memfd_create("syzkaller", 0 [pid 4995] <... unlink resumed>) = 0 [pid 6960] <... memfd_create resumed>) = 3 [pid 4995] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6960] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 6961 attached ./strace-static-x86_64: Process 6959 attached ) = 0x7f46b9f9b000 [pid 6957] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... umount2 resumed>) = 0 [pid 6961] chdir("./163" [pid 6958] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6959] chdir("./163" [pid 6961] <... chdir resumed>) = 0 [pid 4995] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./158/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 6961] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6960] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6959] <... chdir resumed>) = 0 [pid 6957] <... write resumed>) = 2097152 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6961] <... prctl resumed>) = 0 [pid 4995] getdents64(4, [pid 6959] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6961] setpgid(0, 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6961] <... setpgid resumed>) = 0 [pid 4995] close(4 [pid 6959] <... prctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 6961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6959] setpgid(0, 0 [pid 4995] rmdir("./158/file0" [pid 6961] <... openat resumed>) = 3 [pid 6959] <... setpgid resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6961] write(3, "1000", 4 [pid 6959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6958] <... write resumed>) = 2097152 [pid 6957] munmap(0x7f46b9f9b000, 2097152 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3 [pid 6961] <... write resumed>) = 4 [pid 4995] <... close resumed>) = 0 [pid 6961] close(3 [pid 6959] <... openat resumed>) = 3 [pid 4995] rmdir("./158" [pid 6961] <... close resumed>) = 0 [pid 6959] write(3, "1000", 4 [pid 4995] <... rmdir resumed>) = 0 [pid 6961] symlink("/dev/binderfs", "./binderfs" [pid 6959] <... write resumed>) = 4 [pid 4995] mkdir("./159", 0777 [pid 6961] <... symlink resumed>) = 0 [pid 6959] close(3 [pid 4995] <... mkdir resumed>) = 0 [pid 6959] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 6961] memfd_create("syzkaller", 0 [pid 6959] symlink("/dev/binderfs", "./binderfs" [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 6961] <... memfd_create resumed>) = 3 [pid 6959] <... symlink resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6959] memfd_create("syzkaller", 0 [pid 6961] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6962 [pid 6959] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 6962 attached [pid 6960] <... write resumed>) = 2097152 [pid 6959] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6958] munmap(0x7f46b9f9b000, 2097152 [pid 6957] <... munmap resumed>) = 0 [pid 6962] chdir("./159" [pid 6959] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6962] <... chdir resumed>) = 0 [pid 6962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6958] <... munmap resumed>) = 0 [pid 6957] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6962] setpgid(0, 0) = 0 [pid 6962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6962] write(3, "1000", 4) = 4 [pid 6962] close(3) = 0 [pid 6962] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6962] memfd_create("syzkaller", 0) = 3 [pid 6962] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6957] <... openat resumed>) = 4 [pid 6962] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6958] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6957] ioctl(4, LOOP_SET_FD, 3 [pid 6958] <... openat resumed>) = 4 [pid 6957] <... ioctl resumed>) = 0 [pid 6960] munmap(0x7f46b9f9b000, 2097152 [pid 6958] ioctl(4, LOOP_SET_FD, 3 [pid 6957] close(3 [pid 6960] <... munmap resumed>) = 0 [pid 6960] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6960] ioctl(4, LOOP_SET_FD, 3 [pid 6958] <... ioctl resumed>) = 0 [pid 6957] <... close resumed>) = 0 [pid 6958] close(3) = 0 [pid 6957] mkdir("./file0", 0777 [pid 6958] mkdir("./file0", 0777) = 0 [pid 6958] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6957] <... mkdir resumed>) = 0 [pid 6957] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6961] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6960] <... ioctl resumed>) = 0 [pid 6960] close(3) = 0 [pid 6960] mkdir("./file0", 0777 [pid 6962] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6960] <... mkdir resumed>) = 0 [ 174.246292][ T6957] loop1: detected capacity change from 0 to 4096 [ 174.256750][ T6958] loop5: detected capacity change from 0 to 4096 [ 174.262283][ T6960] loop3: detected capacity change from 0 to 4096 [pid 6960] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 174.306468][ T6958] NILFS (loop5): invalid segment: Checksum error in segment payload [ 174.317769][ T6957] NILFS (loop1): invalid segment: Checksum error in segment payload [ 174.320052][ T6960] NILFS (loop3): invalid segment: Checksum error in segment payload [ 174.326384][ T6958] NILFS (loop5): trying rollback from an earlier position [ 174.337292][ T6960] NILFS (loop3): trying rollback from an earlier position [pid 6959] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6961] <... write resumed>) = 2097152 [pid 6961] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6962] <... write resumed>) = 2097152 [pid 6962] munmap(0x7f46b9f9b000, 2097152 [pid 6961] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6962] <... munmap resumed>) = 0 [pid 6961] <... openat resumed>) = 4 [pid 6961] ioctl(4, LOOP_SET_FD, 3 [pid 6962] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6962] ioctl(4, LOOP_SET_FD, 3 [pid 6959] <... write resumed>) = 2097152 [pid 6959] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6959] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6962] <... ioctl resumed>) = 0 [pid 6959] ioctl(4, LOOP_SET_FD, 3 [pid 6962] close(3) = 0 [pid 6962] mkdir("./file0", 0777) = 0 [ 174.350659][ T6957] NILFS (loop1): trying rollback from an earlier position [ 174.373601][ T6962] loop2: detected capacity change from 0 to 4096 [ 174.373884][ T6961] loop0: detected capacity change from 0 to 4096 [ 174.395949][ T6959] loop4: detected capacity change from 0 to 4096 [pid 6962] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6959] <... ioctl resumed>) = 0 [pid 6961] <... ioctl resumed>) = 0 [pid 6959] close(3 [pid 6961] close(3 [pid 6959] <... close resumed>) = 0 [pid 6957] <... mount resumed>) = 0 [pid 6961] <... close resumed>) = 0 [pid 6959] mkdir("./file0", 0777 [pid 6957] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6961] mkdir("./file0", 0777 [pid 6959] <... mkdir resumed>) = 0 [pid 6957] <... openat resumed>) = 3 [pid 6958] <... mount resumed>) = 0 [pid 6958] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6958] chdir("./file0") = 0 [pid 6958] ioctl(4, LOOP_CLR_FD) = 0 [pid 6958] close(4 [pid 6961] <... mkdir resumed>) = 0 [pid 6959] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6957] chdir("./file0" [pid 6961] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6957] <... chdir resumed>) = 0 [pid 6958] <... close resumed>) = 0 [ 174.407999][ T6957] NILFS (loop1): recovery complete [ 174.418416][ T6963] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.422189][ T6958] NILFS (loop5): recovery complete [ 174.429960][ T6962] NILFS (loop2): invalid segment: Checksum error in segment payload [ 174.435834][ T6960] NILFS (loop3): recovery complete [ 174.443758][ T6962] NILFS (loop2): trying rollback from an earlier position [pid 6958] creat("./bus", 000 [pid 6957] ioctl(4, LOOP_CLR_FD) = 0 [ 174.462681][ T6959] NILFS (loop4): invalid segment: Checksum error in segment payload [ 174.477952][ T6961] NILFS (loop0): invalid segment: Checksum error in segment payload [ 174.484741][ T6964] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.487118][ T6959] NILFS (loop4): trying rollback from an earlier position [ 174.505498][ T6962] NILFS (loop2): recovery complete [pid 6957] close(4) = 0 [pid 6957] creat("./bus", 000) = 4 [pid 6957] unlink("./bus") = 0 [pid 6962] <... mount resumed>) = 0 [pid 6960] <... mount resumed>) = 0 [pid 6958] <... creat resumed>) = 4 [ 174.505701][ T6961] NILFS (loop0): trying rollback from an earlier position [ 174.526895][ T6965] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.529091][ T6966] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.554635][ T6961] NILFS (loop0): recovery complete [pid 6957] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6962] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6960] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6958] unlink("./bus" [pid 6960] <... openat resumed>) = 3 [pid 6962] <... openat resumed>) = 3 [pid 6960] chdir("./file0") = 0 [pid 6960] ioctl(4, LOOP_CLR_FD) = 0 [pid 6960] close(4 [pid 6962] chdir("./file0" [pid 6961] <... mount resumed>) = 0 [pid 6960] <... close resumed>) = 0 [pid 6959] <... mount resumed>) = 0 [pid 6958] <... unlink resumed>) = 0 [pid 6957] <... pwritev2 resumed>) = 65007 [pid 6961] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6960] creat("./bus", 000 [pid 6957] exit_group(0 [pid 6961] <... openat resumed>) = 3 [pid 6957] <... exit_group resumed>) = ? [pid 6962] <... chdir resumed>) = 0 [pid 6961] chdir("./file0" [pid 6959] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6958] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6962] ioctl(4, LOOP_CLR_FD [pid 6961] <... chdir resumed>) = 0 [pid 6960] <... creat resumed>) = 4 [pid 6959] <... openat resumed>) = 3 [pid 6962] <... ioctl resumed>) = 0 [pid 6959] chdir("./file0" [pid 6962] close(4 [pid 6959] <... chdir resumed>) = 0 [pid 6962] <... close resumed>) = 0 [pid 6961] ioctl(4, LOOP_CLR_FD [pid 6960] unlink("./bus" [pid 6959] ioctl(4, LOOP_CLR_FD [pid 6962] creat("./bus", 000 [pid 6961] <... ioctl resumed>) = 0 [pid 6959] <... ioctl resumed>) = 0 [pid 6961] close(4 [pid 6960] <... unlink resumed>) = 0 [pid 6959] close(4 [pid 6961] <... close resumed>) = 0 [pid 6960] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6959] <... close resumed>) = 0 [pid 6961] creat("./bus", 000 [pid 6959] creat("./bus", 000) = 4 [pid 6958] <... pwritev2 resumed>) = 65007 [pid 6961] <... creat resumed>) = 4 [pid 6959] unlink("./bus" [pid 6958] exit_group(0 [pid 6962] <... creat resumed>) = 4 [pid 6961] unlink("./bus" [pid 6959] <... unlink resumed>) = 0 [pid 6958] <... exit_group resumed>) = ? [pid 6962] unlink("./bus" [pid 6961] <... unlink resumed>) = 0 [pid 6960] <... pwritev2 resumed>) = 65007 [ 174.562009][ T6959] NILFS (loop4): recovery complete [ 174.574422][ T6967] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 174.586411][ T6968] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6959] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6962] <... unlink resumed>) = 0 [pid 6961] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6960] exit_group(0 [pid 6962] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6959] <... pwritev2 resumed>) = 65007 [pid 6960] <... exit_group resumed>) = ? [pid 6958] +++ exited with 0 +++ [pid 6959] exit_group(0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6958, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 6959] <... exit_group resumed>) = ? [pid 6957] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6957, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4998] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4994] fstat(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./162/binderfs", [pid 4998] lstat("./163/binderfs", [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./162/binderfs" [pid 4998] unlink("./163/binderfs" [pid 4994] <... unlink resumed>) = 0 [pid 4994] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... unlink resumed>) = 0 [pid 6959] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6959, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6962] <... pwritev2 resumed>) = 65007 [pid 6961] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6962] exit_group(0 [pid 6961] exit_group(0 [pid 4997] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6961] <... exit_group resumed>) = ? [pid 4997] lstat("./163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./163/binderfs") = 0 [pid 4997] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6962] <... exit_group resumed>) = ? [pid 6960] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6960, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./163/binderfs") = 0 [pid 4996] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6961] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6961, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 6962] +++ exited with 0 +++ [pid 4993] <... restart_syscall resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6962, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4993] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 4995] fstat(3, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4995] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./163/binderfs", [pid 4995] lstat("./159/binderfs", [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./163/binderfs" [pid 4995] unlink("./159/binderfs" [pid 4993] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4993] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./162/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = 0 [pid 4995] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... umount2 resumed>) = 0 [pid 4995] lstat("./159/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./159/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./159") = 0 [pid 4995] mkdir("./160", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = 0 [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./162/file0" [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6969 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./162" [pid 4998] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./163/file0", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... rmdir resumed>) = 0 [pid 4997] lstat("./163/file0", [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6969 attached [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] mkdir("./163", 0777 [pid 6969] chdir("./160" [pid 4998] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... mkdir resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4997] <... openat resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6969] <... chdir resumed>) = 0 [pid 4998] fstat(4, [pid 4997] fstat(4, [pid 4996] lstat("./163/file0", [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... umount2 resumed>) = 0 [pid 6969] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6969] <... prctl resumed>) = 0 [pid 4998] getdents64(4, [pid 4997] getdents64(4, [pid 4996] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6969] setpgid(0, 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6969] <... setpgid resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4997] getdents64(4, [pid 6969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 6969] <... openat resumed>) = 3 [pid 4998] close(4 [pid 4997] close(4 [pid 4996] <... openat resumed>) = 4 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 6969] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 6969] <... write resumed>) = 4 [pid 4996] fstat(4, [pid 4998] rmdir("./163/file0" [pid 6969] close(3 [pid 4997] rmdir("./163/file0" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] close(3 [pid 6969] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4998] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 6969] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6969] <... symlink resumed>) = 0 [pid 4998] close(3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(4, [pid 6969] memfd_create("syzkaller", 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6970 [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6969] <... memfd_create resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4996] close(4 [pid 6969] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] rmdir("./163" [pid 4997] rmdir("./163" [pid 4996] <... close resumed>) = 0 [pid 6969] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] rmdir("./163/file0" [pid 4993] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./163/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] mkdir("./164", 0777 [pid 4997] mkdir("./164", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... mkdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... openat resumed>) = 4 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4993] fstat(4, ./strace-static-x86_64: Process 6970 attached [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... openat resumed>) = 3 [pid 4996] close(3 [pid 6970] chdir("./163" [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... close resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6970] <... chdir resumed>) = 0 [pid 4998] close(3 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] rmdir("./163" [pid 6970] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4993] getdents64(4, [pid 6970] <... prctl resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6970] setpgid(0, 0 [pid 4993] getdents64(4, [pid 6970] <... setpgid resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] mkdir("./164", 0777 [pid 4993] close(4 [pid 6970] <... openat resumed>) = 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6971 [pid 4993] <... close resumed>) = 0 [pid 6970] write(3, "1000", 4 [pid 4993] rmdir("./163/file0" [pid 6970] <... write resumed>) = 4 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6972 [pid 4996] <... mkdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 6970] close(3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] getdents64(3, ./strace-static-x86_64: Process 6971 attached [pid 6970] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6971] chdir("./164" [pid 6970] symlink("/dev/binderfs", "./binderfs" [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] close(3 [pid 6971] <... chdir resumed>) = 0 [pid 6970] <... symlink resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... close resumed>) = 0 [pid 6971] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6970] memfd_create("syzkaller", 0 [pid 4993] rmdir("./163"./strace-static-x86_64: Process 6972 attached [pid 6971] <... prctl resumed>) = 0 [pid 6970] <... memfd_create resumed>) = 3 [pid 4996] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 6971] setpgid(0, 0 [pid 6970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... close resumed>) = 0 [pid 4993] mkdir("./164", 0777 [pid 6972] chdir("./164" [pid 6971] <... setpgid resumed>) = 0 [pid 6970] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... mkdir resumed>) = 0 [pid 6972] <... chdir resumed>) = 0 [pid 6971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6969] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6972] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6971] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 6972] <... prctl resumed>) = 0 [pid 6971] write(3, "1000", 4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6973 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 6972] setpgid(0, 0 [pid 6971] <... write resumed>) = 4 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6972] <... setpgid resumed>) = 0 [pid 6971] close(3 [pid 4993] close(3 [pid 6972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6971] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 ./strace-static-x86_64: Process 6973 attached [pid 6972] <... openat resumed>) = 3 [pid 6971] symlink("/dev/binderfs", "./binderfs" [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6973] chdir("./164" [pid 6972] write(3, "1000", 4 [pid 6971] <... symlink resumed>) = 0 [pid 6973] <... chdir resumed>) = 0 [pid 6972] <... write resumed>) = 4 [pid 6971] memfd_create("syzkaller", 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6974 [pid 6973] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6972] close(3 [pid 6971] <... memfd_create resumed>) = 3 [pid 6973] <... prctl resumed>) = 0 [pid 6972] <... close resumed>) = 0 [pid 6971] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6973] setpgid(0, 0 [pid 6972] symlink("/dev/binderfs", "./binderfs" [pid 6971] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6973] <... setpgid resumed>) = 0 [pid 6972] <... symlink resumed>) = 0 [pid 6973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6972] memfd_create("syzkaller", 0./strace-static-x86_64: Process 6974 attached [pid 6973] <... openat resumed>) = 3 [pid 6972] <... memfd_create resumed>) = 3 [pid 6974] chdir("./164" [pid 6973] write(3, "1000", 4 [pid 6972] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6974] <... chdir resumed>) = 0 [pid 6973] <... write resumed>) = 4 [pid 6972] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6974] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6973] close(3 [pid 6974] <... prctl resumed>) = 0 [pid 6973] <... close resumed>) = 0 [pid 6974] setpgid(0, 0 [pid 6973] symlink("/dev/binderfs", "./binderfs" [pid 6974] <... setpgid resumed>) = 0 [pid 6973] <... symlink resumed>) = 0 [pid 6974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6973] memfd_create("syzkaller", 0 [pid 6970] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6974] <... openat resumed>) = 3 [pid 6973] <... memfd_create resumed>) = 3 [pid 6974] write(3, "1000", 4 [pid 6973] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6974] <... write resumed>) = 4 [pid 6973] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6974] close(3 [pid 6971] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6974] <... close resumed>) = 0 [pid 6969] <... write resumed>) = 2097152 [pid 6974] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6972] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6969] munmap(0x7f46b9f9b000, 2097152 [pid 6974] memfd_create("syzkaller", 0) = 3 [pid 6974] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 6969] <... munmap resumed>) = 0 [pid 6969] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 6969] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6973] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6972] <... write resumed>) = 2097152 [pid 6969] close(3) = 0 [pid 6969] mkdir("./file0", 0777 [pid 6972] munmap(0x7f46b9f9b000, 2097152 [pid 6969] <... mkdir resumed>) = 0 [ 174.917545][ T6969] loop2: detected capacity change from 0 to 4096 [pid 6969] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6974] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6972] <... munmap resumed>) = 0 [pid 6970] <... write resumed>) = 2097152 [pid 6970] munmap(0x7f46b9f9b000, 2097152 [pid 6972] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 6972] ioctl(4, LOOP_SET_FD, 3 [pid 6970] <... munmap resumed>) = 0 [pid 6970] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6970] ioctl(4, LOOP_SET_FD, 3 [pid 6973] <... write resumed>) = 2097152 [pid 6971] <... write resumed>) = 2097152 [ 174.962819][ T6969] NILFS (loop2): invalid segment: Checksum error in segment payload [ 174.983643][ T6972] loop4: detected capacity change from 0 to 4096 [ 174.988887][ T6970] loop1: detected capacity change from 0 to 4096 [pid 6971] munmap(0x7f46b9f9b000, 2097152 [pid 6972] <... ioctl resumed>) = 0 [pid 6971] <... munmap resumed>) = 0 [pid 6973] munmap(0x7f46b9f9b000, 2097152 [pid 6972] close(3) = 0 [pid 6971] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 6972] mkdir("./file0", 0777 [pid 6971] ioctl(4, LOOP_SET_FD, 3 [pid 6973] <... munmap resumed>) = 0 [pid 6972] <... mkdir resumed>) = 0 [pid 6972] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6973] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6973] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6970] <... ioctl resumed>) = 0 [pid 6973] close(3 [ 175.026948][ T6969] NILFS (loop2): trying rollback from an earlier position [ 175.040243][ T6971] loop5: detected capacity change from 0 to 4096 [ 175.055750][ T6973] loop3: detected capacity change from 0 to 4096 [ 175.066112][ T6972] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 6970] close(3) = 0 [pid 6974] <... write resumed>) = 2097152 [pid 6970] mkdir("./file0", 0777) = 0 [pid 6970] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6971] <... ioctl resumed>) = 0 [pid 6973] <... close resumed>) = 0 [pid 6971] close(3 [pid 6974] munmap(0x7f46b9f9b000, 2097152 [pid 6971] <... close resumed>) = 0 [pid 6974] <... munmap resumed>) = 0 [pid 6973] mkdir("./file0", 0777 [pid 6971] mkdir("./file0", 0777 [pid 6974] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6973] <... mkdir resumed>) = 0 [pid 6971] <... mkdir resumed>) = 0 [pid 6974] <... openat resumed>) = 4 [pid 6971] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6974] ioctl(4, LOOP_SET_FD, 3 [ 175.083764][ T6972] NILFS (loop4): trying rollback from an earlier position [ 175.092835][ T6969] NILFS (loop2): recovery complete [ 175.105582][ T6975] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.119230][ T6972] NILFS (loop4): recovery complete [ 175.125489][ T6971] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 6973] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6969] <... mount resumed>) = 0 [pid 6969] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6969] chdir("./file0") = 0 [pid 6969] ioctl(4, LOOP_CLR_FD [pid 6972] <... mount resumed>) = 0 [pid 6972] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6969] <... ioctl resumed>) = 0 [pid 6972] <... openat resumed>) = 3 [pid 6969] close(4 [pid 6972] chdir("./file0" [pid 6969] <... close resumed>) = 0 [pid 6972] <... chdir resumed>) = 0 [pid 6972] ioctl(4, LOOP_CLR_FD) = 0 [pid 6972] close(4) = 0 [pid 6972] creat("./bus", 000 [pid 6969] creat("./bus", 000 [pid 6974] <... ioctl resumed>) = 0 [pid 6969] <... creat resumed>) = 4 [pid 6969] unlink("./bus") = 0 [pid 6969] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6974] close(3) = 0 [pid 6974] mkdir("./file0", 0777 [pid 6972] <... creat resumed>) = 4 [pid 6972] unlink("./bus" [pid 6974] <... mkdir resumed>) = 0 [pid 6974] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6972] <... unlink resumed>) = 0 [ 175.126115][ T6974] loop0: detected capacity change from 0 to 4096 [ 175.133610][ T6971] NILFS (loop5): trying rollback from an earlier position [ 175.152936][ T6976] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.154480][ T6973] NILFS (loop3): invalid segment: Checksum error in segment payload [ 175.164583][ T6970] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 6972] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6969] <... pwritev2 resumed>) = 65007 [pid 6969] exit_group(0) = ? [pid 6969] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6969, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6972] <... pwritev2 resumed>) = 65007 [pid 4995] umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6972] exit_group(0) = ? [pid 4995] openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, [pid 6972] +++ exited with 0 +++ [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6972, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] getdents64(3, [pid 4997] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 175.234614][ T6970] NILFS (loop1): trying rollback from an earlier position [ 175.246955][ T6973] NILFS (loop3): trying rollback from an earlier position [ 175.248029][ T6974] NILFS (loop0): invalid segment: Checksum error in segment payload [ 175.264932][ T6971] NILFS (loop5): recovery complete [ 175.268864][ T6974] NILFS (loop0): trying rollback from an earlier position [pid 4997] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./164/binderfs") = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./160/binderfs", [pid 6971] <... mount resumed>) = 0 [pid 6971] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6971] <... openat resumed>) = 3 [pid 4995] unlink("./160/binderfs" [pid 6971] chdir("./file0" [pid 4995] <... unlink resumed>) = 0 [pid 6971] <... chdir resumed>) = 0 [pid 4995] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6971] ioctl(4, LOOP_CLR_FD) = 0 [pid 6971] close(4) = 0 [ 175.289281][ T6973] NILFS (loop3): recovery complete [ 175.296457][ T6977] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.305702][ T6970] NILFS (loop1): recovery complete [pid 6971] creat("./bus", 000 [pid 6973] <... mount resumed>) = 0 [pid 6971] <... creat resumed>) = 4 [pid 6970] <... mount resumed>) = 0 [pid 6973] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6971] unlink("./bus" [pid 6973] <... openat resumed>) = 3 [pid 6971] <... unlink resumed>) = 0 [pid 6973] chdir("./file0" [pid 6971] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6973] <... chdir resumed>) = 0 [pid 6970] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... umount2 resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 6973] ioctl(4, LOOP_CLR_FD [pid 6971] <... pwritev2 resumed>) = 65007 [pid 6970] <... openat resumed>) = 3 [pid 4997] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6973] <... ioctl resumed>) = 0 [pid 6971] exit_group(0 [pid 6970] chdir("./file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6973] close(4 [pid 6971] <... exit_group resumed>) = ? [pid 6970] <... chdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./164/file0", [pid 6973] <... close resumed>) = 0 [pid 6970] ioctl(4, LOOP_CLR_FD [pid 4995] lstat("./160/file0", [pid 6973] creat("./bus", 000 [pid 6970] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6973] <... creat resumed>) = 4 [pid 6970] close(4 [pid 4997] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6973] unlink("./bus" [pid 6970] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6973] <... unlink resumed>) = 0 [pid 6970] creat("./bus", 000 [pid 4997] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6973] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... openat resumed>) = 4 [pid 6970] <... creat resumed>) = 4 [pid 4995] openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [ 175.340355][ T6979] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.351391][ T6978] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.354081][ T6974] NILFS (loop0): recovery complete [pid 6970] unlink("./bus" [pid 4997] fstat(4, [pid 6970] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 6970] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 6971] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6971, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4998] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./164/binderfs") = 0 [pid 4998] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, [pid 4997] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 6973] <... pwritev2 resumed>) = 65007 [pid 6973] exit_group(0 [pid 6970] <... pwritev2 resumed>) = 65007 [pid 4997] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6973] <... exit_group resumed>) = ? [pid 6970] exit_group(0 [pid 4997] <... close resumed>) = 0 [pid 4995] close(4 [pid 6970] <... exit_group resumed>) = ? [pid 4997] rmdir("./164/file0" [pid 4995] <... close resumed>) = 0 [pid 6973] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6973, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6974] <... mount resumed>) = 0 [pid 4996] unlink("./164/binderfs" [pid 6974] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... unlink resumed>) = 0 [pid 6974] <... openat resumed>) = 3 [pid 4996] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6974] chdir("./file0") = 0 [pid 6974] ioctl(4, LOOP_CLR_FD) = 0 [pid 6974] close(4) = 0 [pid 6974] creat("./bus", 000 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] rmdir("./160/file0" [pid 4997] getdents64(3, [pid 4995] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4995] close(3 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./164" [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./160" [pid 4997] <... rmdir resumed>) = 0 [pid 4997] mkdir("./165", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./161", 0777 [pid 4997] <... mkdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] <... mkdir resumed>) = 0 [pid 4998] lstat("./164/file0", [pid 6970] +++ exited with 0 +++ [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... umount2 resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4997] <... openat resumed>) = 3 [pid 4996] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6970, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] lstat("./164/file0", [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4994] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(3, [pid 4998] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] fstat(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] getdents64(3, [pid 4998] fstat(4, [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6981 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6982 [pid 4994] lstat("./163/binderfs", [pid 4998] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4994] unlink("./163/binderfs"./strace-static-x86_64: Process 6982 attached [pid 4998] close(4 [pid 4996] <... close resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 6982] chdir("./161" [pid 4998] <... close resumed>) = 0 [pid 4996] rmdir("./164/file0" [pid 4994] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6982] <... chdir resumed>) = 0 [pid 4998] rmdir("./164/file0" [pid 4996] <... rmdir resumed>) = 0 [pid 6982] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 6982] <... prctl resumed>) = 0 [pid 6974] <... creat resumed>) = 4 [pid 4998] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6982] setpgid(0, 0 [pid 6974] unlink("./bus" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 6982] <... setpgid resumed>) = 0 [pid 6974] <... unlink resumed>) = 0 [pid 4998] close(3 [pid 4996] <... close resumed>) = 0 ./strace-static-x86_64: Process 6981 attached [pid 6982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 175.451940][ T6980] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6974] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... close resumed>) = 0 [pid 4996] rmdir("./164" [pid 6982] <... openat resumed>) = 3 [pid 6981] chdir("./165" [pid 4998] rmdir("./164" [pid 4996] <... rmdir resumed>) = 0 [pid 6982] write(3, "1000", 4 [pid 6981] <... chdir resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] mkdir("./165", 0777 [pid 6982] <... write resumed>) = 4 [pid 6981] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] mkdir("./165", 0777 [pid 4996] <... mkdir resumed>) = 0 [pid 6982] close(3 [pid 6981] <... prctl resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6982] <... close resumed>) = 0 [pid 6981] setpgid(0, 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 6982] symlink("/dev/binderfs", "./binderfs" [pid 6981] <... setpgid resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 6982] <... symlink resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6982] memfd_create("syzkaller", 0 [pid 6981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6974] <... pwritev2 resumed>) = 65007 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 6982] <... memfd_create resumed>) = 3 [pid 6981] <... openat resumed>) = 3 [pid 6974] exit_group(0 [pid 4998] close(3 [pid 4996] <... close resumed>) = 0 [pid 6982] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6974] <... exit_group resumed>) = ? [pid 4998] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6981] write(3, "1000", 4 [pid 6982] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 6984 attached [pid 6981] <... write resumed>) = 4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6983 [pid 6981] close(3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6984 [pid 6984] chdir("./165" [pid 6981] <... close resumed>) = 0 [pid 6984] <... chdir resumed>) = 0 [pid 6984] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6981] symlink("/dev/binderfs", "./binderfs") = 0 ./strace-static-x86_64: Process 6983 attached [pid 6983] chdir("./165") = 0 [pid 6983] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6981] memfd_create("syzkaller", 0 [pid 6974] +++ exited with 0 +++ [pid 6981] <... memfd_create resumed>) = 3 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6974, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 6983] <... prctl resumed>) = 0 [pid 4993] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6983] setpgid(0, 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6983] <... setpgid resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6984] <... prctl resumed>) = 0 [pid 6983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6981] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... openat resumed>) = 3 [pid 6984] setpgid(0, 0 [pid 6983] <... openat resumed>) = 3 [pid 6981] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] fstat(3, [pid 6983] write(3, "1000", 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6983] <... write resumed>) = 4 [pid 4993] getdents64(3, [pid 6983] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 6983] <... close resumed>) = 0 [pid 4994] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6983] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6983] <... symlink resumed>) = 0 [pid 4994] lstat("./163/file0", [pid 4993] lstat("./164/binderfs", [pid 6983] memfd_create("syzkaller", 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6984] <... setpgid resumed>) = 0 [pid 6983] <... memfd_create resumed>) = 3 [pid 4994] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./164/binderfs" [pid 6984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6983] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... unlink resumed>) = 0 [pid 6983] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6984] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 4 [pid 6984] write(3, "1000", 4 [pid 4994] fstat(4, [pid 6984] <... write resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6984] close(3 [pid 4994] getdents64(4, [pid 6984] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6984] symlink("/dev/binderfs", "./binderfs" [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6984] <... symlink resumed>) = 0 [pid 4994] close(4) = 0 [pid 6984] memfd_create("syzkaller", 0 [pid 4994] rmdir("./163/file0" [pid 6984] <... memfd_create resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 6984] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] getdents64(3, [pid 6984] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./163") = 0 [pid 4994] mkdir("./164", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6983] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6985 ./strace-static-x86_64: Process 6985 attached [pid 6985] chdir("./164") = 0 [pid 6985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6985] setpgid(0, 0) = 0 [pid 6982] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6981] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 6985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6985] write(3, "1000", 4) = 4 [pid 6985] close(3) = 0 [pid 6985] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6985] memfd_create("syzkaller", 0) = 3 [pid 6985] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4993] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./164/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6984] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6985] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./164/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./164") = 0 [pid 4993] mkdir("./165", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 6986 ./strace-static-x86_64: Process 6986 attached [pid 6986] chdir("./165") = 0 [pid 6986] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6983] <... write resumed>) = 2097152 [pid 6986] <... prctl resumed>) = 0 [pid 6986] setpgid(0, 0) = 0 [pid 6986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 6986] write(3, "1000", 4) = 4 [pid 6986] close(3 [pid 6983] munmap(0x7f46b9f9b000, 2097152 [pid 6986] <... close resumed>) = 0 [pid 6983] <... munmap resumed>) = 0 [pid 6982] <... write resumed>) = 2097152 [pid 6986] symlink("/dev/binderfs", "./binderfs" [pid 6984] <... write resumed>) = 2097152 [pid 6983] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 6982] munmap(0x7f46b9f9b000, 2097152 [pid 6981] <... write resumed>) = 2097152 [pid 6986] <... symlink resumed>) = 0 [pid 6983] <... openat resumed>) = 4 [pid 6982] <... munmap resumed>) = 0 [pid 6981] munmap(0x7f46b9f9b000, 2097152 [pid 6986] memfd_create("syzkaller", 0 [pid 6985] <... write resumed>) = 2097152 [pid 6984] munmap(0x7f46b9f9b000, 2097152 [pid 6983] ioctl(4, LOOP_SET_FD, 3 [pid 6982] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6981] <... munmap resumed>) = 0 [pid 6986] <... memfd_create resumed>) = 3 [pid 6985] munmap(0x7f46b9f9b000, 2097152 [pid 6984] <... munmap resumed>) = 0 [pid 6982] <... openat resumed>) = 4 [pid 6986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6985] <... munmap resumed>) = 0 [pid 6986] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6985] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 6984] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 6986] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6985] <... openat resumed>) = 4 [pid 6983] <... ioctl resumed>) = 0 [pid 6982] ioctl(4, LOOP_SET_FD, 3 [pid 6981] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 6985] ioctl(4, LOOP_SET_FD, 3 [pid 6984] <... openat resumed>) = 4 [pid 6984] ioctl(4, LOOP_SET_FD, 3 [pid 6983] close(3 [pid 6982] <... ioctl resumed>) = 0 [pid 6981] <... openat resumed>) = 4 [pid 6983] <... close resumed>) = 0 [pid 6982] close(3 [pid 6981] ioctl(4, LOOP_SET_FD, 3 [pid 6983] mkdir("./file0", 0777 [pid 6982] <... close resumed>) = 0 [pid 6984] <... ioctl resumed>) = 0 [pid 6984] close(3) = 0 [pid 6984] mkdir("./file0", 0777) = 0 [pid 6984] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6982] mkdir("./file0", 0777 [pid 6981] <... ioctl resumed>) = 0 [pid 6983] <... mkdir resumed>) = 0 [pid 6982] <... mkdir resumed>) = 0 [pid 6983] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6982] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6985] <... ioctl resumed>) = 0 [ 175.750029][ T6983] loop3: detected capacity change from 0 to 4096 [ 175.764620][ T6982] loop2: detected capacity change from 0 to 4096 [ 175.765198][ T6985] loop1: detected capacity change from 0 to 4096 [ 175.778800][ T6984] loop5: detected capacity change from 0 to 4096 [ 175.786262][ T6981] loop4: detected capacity change from 0 to 4096 [pid 6985] close(3) = 0 [pid 6985] mkdir("./file0", 0777) = 0 [pid 6985] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6986] <... write resumed>) = 2097152 [pid 6981] close(3 [pid 6986] munmap(0x7f46b9f9b000, 2097152 [pid 6981] <... close resumed>) = 0 [ 175.801792][ T6982] NILFS (loop2): invalid segment: Checksum error in segment payload [ 175.814001][ T6983] NILFS (loop3): invalid segment: Checksum error in segment payload [ 175.816266][ T6984] NILFS (loop5): invalid segment: Checksum error in segment payload [ 175.823784][ T6983] NILFS (loop3): trying rollback from an earlier position [ 175.837717][ T6982] NILFS (loop2): trying rollback from an earlier position [pid 6986] <... munmap resumed>) = 0 [pid 6981] mkdir("./file0", 0777 [pid 6986] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 6981] <... mkdir resumed>) = 0 [pid 6986] <... openat resumed>) = 4 [pid 6981] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6986] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6986] close(3 [pid 6983] <... mount resumed>) = 0 [pid 6983] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 175.846453][ T6985] NILFS (loop1): invalid segment: Checksum error in segment payload [ 175.852991][ T6984] NILFS (loop5): trying rollback from an earlier position [ 175.858387][ T6983] NILFS (loop3): recovery complete [ 175.869196][ T6985] NILFS (loop1): trying rollback from an earlier position [ 175.872184][ T6986] loop0: detected capacity change from 0 to 4096 [ 175.884688][ T6987] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.887680][ T6982] NILFS (loop2): recovery complete [pid 6983] chdir("./file0" [pid 6986] <... close resumed>) = 0 [pid 6983] <... chdir resumed>) = 0 [pid 6986] mkdir("./file0", 0777 [pid 6983] ioctl(4, LOOP_CLR_FD [pid 6986] <... mkdir resumed>) = 0 [pid 6985] <... mount resumed>) = 0 [pid 6983] <... ioctl resumed>) = 0 [pid 6986] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6985] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6983] close(4 [pid 6982] <... mount resumed>) = 0 [pid 6985] <... openat resumed>) = 3 [pid 6985] chdir("./file0") = 0 [ 175.902789][ T6984] NILFS (loop5): recovery complete [ 175.906916][ T6985] NILFS (loop1): recovery complete [ 175.909104][ T6981] NILFS (loop4): invalid segment: Checksum error in segment payload [ 175.923760][ T6981] NILFS (loop4): trying rollback from an earlier position [ 175.924755][ T6988] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.931472][ T6989] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6985] ioctl(4, LOOP_CLR_FD) = 0 [pid 6985] close(4) = 0 [pid 6984] <... mount resumed>) = 0 [pid 6983] <... close resumed>) = 0 [pid 6982] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6985] creat("./bus", 000 [pid 6984] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6983] creat("./bus", 000 [pid 6982] <... openat resumed>) = 3 [pid 6984] chdir("./file0") = 0 [pid 6984] ioctl(4, LOOP_CLR_FD) = 0 [pid 6984] close(4) = 0 [pid 6984] creat("./bus", 000 [pid 6985] <... creat resumed>) = 4 [pid 6984] <... creat resumed>) = 4 [pid 6982] chdir("./file0" [pid 6981] <... mount resumed>) = 0 [pid 6982] <... chdir resumed>) = 0 [pid 6982] ioctl(4, LOOP_CLR_FD [pid 6985] unlink("./bus" [pid 6984] unlink("./bus" [pid 6983] <... creat resumed>) = 4 [pid 6982] <... ioctl resumed>) = 0 [pid 6981] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6985] <... unlink resumed>) = 0 [pid 6984] <... unlink resumed>) = 0 [pid 6983] unlink("./bus" [pid 6982] close(4 [pid 6981] <... openat resumed>) = 3 [pid 6985] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6984] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6983] <... unlink resumed>) = 0 [pid 6982] <... close resumed>) = 0 [pid 6981] chdir("./file0" [pid 6983] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6982] creat("./bus", 000 [pid 6981] <... chdir resumed>) = 0 [pid 6981] ioctl(4, LOOP_CLR_FD) = 0 [pid 6981] close(4) = 0 [ 175.952399][ T6981] NILFS (loop4): recovery complete [ 175.959141][ T6990] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.970541][ T6991] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 175.974681][ T6986] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 6981] creat("./bus", 000 [pid 6985] <... pwritev2 resumed>) = 65007 [pid 6984] <... pwritev2 resumed>) = 65007 [pid 6983] <... pwritev2 resumed>) = 65007 [pid 6981] <... creat resumed>) = 4 [pid 6985] exit_group(0 [pid 6984] exit_group(0 [pid 6983] exit_group(0 [pid 6981] unlink("./bus" [pid 6982] <... creat resumed>) = 4 [pid 6982] unlink("./bus" [pid 6985] <... exit_group resumed>) = ? [pid 6984] <... exit_group resumed>) = ? [pid 6983] <... exit_group resumed>) = ? [pid 6981] <... unlink resumed>) = 0 [pid 6982] <... unlink resumed>) = 0 [pid 6981] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6982] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6983] +++ exited with 0 +++ [pid 6985] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6983, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6985, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4996] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 6984] +++ exited with 0 +++ [pid 4996] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6984, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4996] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4996] fstat(3, [pid 4998] <... restart_syscall resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, [pid 4994] <... openat resumed>) = 3 [pid 4998] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] fstat(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4994] getdents64(3, [pid 4998] fstat(3, [pid 4996] lstat("./165/binderfs", [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] unlink("./165/binderfs" [pid 4994] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] lstat("./165/binderfs", [pid 4996] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./164/binderfs" [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4998] unlink("./165/binderfs") = 0 [pid 4998] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6981] <... pwritev2 resumed>) = 65007 [ 176.027993][ T6986] NILFS (loop0): trying rollback from an earlier position [pid 6981] exit_group(0) = ? [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4998] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./165/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] lstat("./165/file0", [pid 4998] <... openat resumed>) = 4 [pid 6982] <... pwritev2 resumed>) = 65007 [pid 4998] fstat(4, [pid 6982] exit_group(0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6982] <... exit_group resumed>) = ? [pid 4998] getdents64(4, [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6981] +++ exited with 0 +++ [pid 4996] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] getdents64(4, [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6981, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4996] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4996] <... openat resumed>) = 4 [pid 4998] close(4 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4996] fstat(4, [pid 4998] <... close resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] rmdir("./165/file0" [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4998] getdents64(3, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] close(4 [pid 4998] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 6982] +++ exited with 0 +++ [pid 4998] <... close resumed>) = 0 [pid 4997] fstat(3, [pid 4996] rmdir("./165/file0" [pid 4998] rmdir("./165" [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6982, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 4998] mkdir("./166", 0777 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./165" [pid 4998] <... openat resumed>) = 3 [pid 4997] lstat("./165/binderfs", [pid 4996] <... rmdir resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 176.132522][ T6986] NILFS (loop0): recovery complete [pid 4996] mkdir("./166", 0777 [pid 4995] umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] unlink("./165/binderfs" [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(3 [pid 4997] <... unlink resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] fstat(3, [pid 4994] <... umount2 resumed>) = 0 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6992 [pid 4996] close(3 [pid 4995] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6994 [pid 4995] lstat("./161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] unlink("./161/binderfs") = 0 [pid 4994] lstat("./164/file0", [pid 4995] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 6992 attached [pid 6986] <... mount resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6992] chdir("./166" [pid 6986] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6992] <... chdir resumed>) = 0 [pid 6986] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6992] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6986] chdir("./file0" [pid 4994] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 6994 attached [pid 6992] <... prctl resumed>) = 0 [pid 6986] <... chdir resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 6994] chdir("./166" [pid 6992] setpgid(0, 0 [pid 6986] ioctl(4, LOOP_CLR_FD [pid 4994] fstat(4, [pid 6994] <... chdir resumed>) = 0 [pid 6992] <... setpgid resumed>) = 0 [pid 6986] <... ioctl resumed>) = 0 [pid 4997] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6994] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6986] close(4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, [pid 6994] <... prctl resumed>) = 0 [pid 6992] <... openat resumed>) = 3 [pid 6986] <... close resumed>) = 0 [pid 4997] lstat("./165/file0", [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6994] setpgid(0, 0 [pid 6992] write(3, "1000", 4 [pid 6986] creat("./bus", 000 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 4994] getdents64(4, [pid 6994] <... setpgid resumed>) = 0 [pid 6992] <... write resumed>) = 4 [pid 4997] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 6994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6992] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] close(4 [pid 6994] <... openat resumed>) = 3 [pid 6992] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 6994] write(3, "1000", 4 [pid 6992] symlink("/dev/binderfs", "./binderfs" [pid 4994] rmdir("./164/file0" [pid 6994] <... write resumed>) = 4 [pid 6992] <... symlink resumed>) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4994] <... rmdir resumed>) = 0 [pid 6994] close(3 [pid 6992] memfd_create("syzkaller", 0 [pid 4997] fstat(4, [pid 4994] getdents64(3, [pid 6994] <... close resumed>) = 0 [pid 6992] <... memfd_create resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6994] symlink("/dev/binderfs", "./binderfs" [pid 6992] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] getdents64(4, [pid 4994] close(3 [pid 6994] <... symlink resumed>) = 0 [pid 6992] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 6994] memfd_create("syzkaller", 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] rmdir("./164" [pid 6994] <... memfd_create resumed>) = 3 [ 176.195183][ T6993] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] lstat("./161/file0", [pid 4994] <... rmdir resumed>) = 0 [pid 6994] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] mkdir("./165", 0777 [pid 6994] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... mkdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 6994] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] close(4 [pid 4995] <... openat resumed>) = 4 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] <... close resumed>) = 0 [pid 4995] fstat(4, [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] rmdir("./165/file0" [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] getdents64(4, [pid 4994] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 4997] close(3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6995 [pid 6986] <... creat resumed>) = 4 [pid 4997] <... close resumed>) = 0 [pid 4995] close(4 [pid 6986] unlink("./bus" [pid 4997] rmdir("./165" [pid 4995] <... close resumed>) = 0 [pid 6986] <... unlink resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] rmdir("./161/file0" [pid 6986] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] mkdir("./166", 0777 [pid 4995] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 6995 attached [pid 4995] getdents64(3, [pid 6995] chdir("./165" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 6995] <... chdir resumed>) = 0 [pid 4995] close(3 [pid 6995] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... close resumed>) = 0 [pid 6995] <... prctl resumed>) = 0 [pid 4995] rmdir("./161" [pid 6995] setpgid(0, 0 [pid 4995] <... rmdir resumed>) = 0 [pid 6995] <... setpgid resumed>) = 0 [pid 6992] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] mkdir("./162", 0777 [pid 6995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... mkdir resumed>) = 0 [pid 6995] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 6995] write(3, "1000", 4 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 3 [pid 6995] <... write resumed>) = 4 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 6995] close(3 [pid 4997] close(3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 6995] <... close resumed>) = 0 [pid 6986] <... pwritev2 resumed>) = 65007 [pid 4997] <... close resumed>) = 0 [pid 4995] close(3 [pid 6995] symlink("/dev/binderfs", "./binderfs" [pid 6986] exit_group(0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... close resumed>) = 0 [pid 6995] <... symlink resumed>) = 0 [pid 6986] <... exit_group resumed>) = ? [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6995] memfd_create("syzkaller", 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6996 [pid 6995] <... memfd_create resumed>) = 3 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 6997 [pid 6995] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 6996 attached ./strace-static-x86_64: Process 6997 attached [pid 6997] chdir("./162" [pid 6996] chdir("./166") = 0 [pid 6996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6997] <... chdir resumed>) = 0 [pid 6996] setpgid(0, 0) = 0 [pid 6997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 6996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6997] setpgid(0, 0 [pid 6996] <... openat resumed>) = 3 [pid 6997] <... setpgid resumed>) = 0 [pid 6996] write(3, "1000", 4 [pid 6986] +++ exited with 0 +++ [pid 6997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6996] <... write resumed>) = 4 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6986, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 6997] <... openat resumed>) = 3 [pid 6996] close(3 [pid 6997] write(3, "1000", 4 [pid 6996] <... close resumed>) = 0 [pid 6997] <... write resumed>) = 4 [pid 6996] symlink("/dev/binderfs", "./binderfs" [pid 6997] close(3) = 0 [pid 6996] <... symlink resumed>) = 0 [pid 6997] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6996] memfd_create("syzkaller", 0 [pid 6997] memfd_create("syzkaller", 0 [pid 6996] <... memfd_create resumed>) = 3 [pid 6997] <... memfd_create resumed>) = 3 [pid 6996] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6995] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6996] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6997] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, [pid 6994] <... write resumed>) = 2097152 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6992] <... write resumed>) = 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6992] munmap(0x7f46b9f9b000, 2097152 [pid 4993] lstat("./165/binderfs", [pid 6992] <... munmap resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 6992] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] unlink("./165/binderfs" [pid 6996] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6992] <... openat resumed>) = 4 [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6994] munmap(0x7f46b9f9b000, 2097152 [pid 6992] ioctl(4, LOOP_SET_FD, 3 [pid 6994] <... munmap resumed>) = 0 [pid 6994] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 6994] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 6994] close(3) = 0 [pid 6994] mkdir("./file0", 0777) = 0 [pid 6994] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6997] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6992] <... ioctl resumed>) = 0 [pid 6992] close(3) = 0 [ 176.398344][ T6992] loop5: detected capacity change from 0 to 4096 [ 176.402824][ T6994] loop3: detected capacity change from 0 to 4096 [pid 6992] mkdir("./file0", 0777 [pid 6997] <... write resumed>) = 2097152 [pid 6996] <... write resumed>) = 2097152 [pid 6995] <... write resumed>) = 2097152 [pid 6992] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 6997] munmap(0x7f46b9f9b000, 2097152 [pid 6996] munmap(0x7f46b9f9b000, 2097152 [pid 6992] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6997] <... munmap resumed>) = 0 [pid 6996] <... munmap resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6997] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 4993] lstat("./165/file0", [pid 6997] ioctl(4, LOOP_SET_FD, 3 [pid 6996] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6995] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 6995] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 6995] ioctl(4, LOOP_SET_FD, 3 [pid 4993] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6996] <... openat resumed>) = 4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 6995] <... ioctl resumed>) = 0 [pid 6995] close(3) = 0 [ 176.455258][ T6994] NILFS (loop3): invalid segment: Checksum error in segment payload [ 176.463380][ T6994] NILFS (loop3): trying rollback from an earlier position [ 176.480992][ T6997] loop2: detected capacity change from 0 to 4096 [ 176.483107][ T6992] NILFS (loop5): invalid segment: Checksum error in segment payload [ 176.493129][ T6995] loop1: detected capacity change from 0 to 4096 [pid 6995] mkdir("./file0", 0777) = 0 [pid 6995] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6996] ioctl(4, LOOP_SET_FD, 3 [pid 4993] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 6997] <... ioctl resumed>) = 0 [pid 6997] close(3) = 0 [pid 6997] mkdir("./file0", 0777) = 0 [pid 4993] <... openat resumed>) = 4 [pid 6997] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6996] <... ioctl resumed>) = 0 [pid 4993] fstat(4, [pid 6996] close(3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6996] <... close resumed>) = 0 [ 176.503628][ T6992] NILFS (loop5): trying rollback from an earlier position [ 176.512815][ T6996] loop4: detected capacity change from 0 to 4096 [ 176.531084][ T6994] NILFS (loop3): recovery complete [ 176.532410][ T6995] NILFS (loop1): invalid segment: Checksum error in segment payload [ 176.541911][ T6992] NILFS (loop5): recovery complete [pid 4993] getdents64(4, [pid 6996] mkdir("./file0", 0777 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 6996] <... mkdir resumed>) = 0 [pid 4993] getdents64(4, [pid 6996] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./165/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 6995] <... mount resumed>) = 0 [pid 4993] rmdir("./165") = 0 [pid 4993] mkdir("./166", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 6995] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7001 [ 176.545174][ T6995] NILFS (loop1): trying rollback from an earlier position [ 176.551013][ T6997] NILFS (loop2): invalid segment: Checksum error in segment payload [ 176.571315][ T6995] NILFS (loop1): recovery complete [ 176.571687][ T6996] NILFS (loop4): invalid segment: Checksum error in segment payload [ 176.578402][ T7000] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.596416][ T6997] NILFS (loop2): trying rollback from an earlier position ./strace-static-x86_64: Process 7001 attached [pid 6995] <... openat resumed>) = 3 [pid 7001] chdir("./166" [pid 6995] chdir("./file0" [pid 6994] <... mount resumed>) = 0 [pid 6992] <... mount resumed>) = 0 [pid 7001] <... chdir resumed>) = 0 [pid 6995] <... chdir resumed>) = 0 [pid 6994] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6992] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7001] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 6995] ioctl(4, LOOP_CLR_FD [pid 6994] <... openat resumed>) = 3 [pid 6992] <... openat resumed>) = 3 [pid 7001] <... prctl resumed>) = 0 [pid 6995] <... ioctl resumed>) = 0 [pid 6994] chdir("./file0" [pid 6992] chdir("./file0" [pid 6994] <... chdir resumed>) = 0 [pid 6992] <... chdir resumed>) = 0 [pid 6994] ioctl(4, LOOP_CLR_FD [pid 6995] close(4 [pid 6992] ioctl(4, LOOP_CLR_FD [pid 7001] setpgid(0, 0) = 0 [pid 6995] <... close resumed>) = 0 [pid 6994] <... ioctl resumed>) = 0 [pid 6992] <... ioctl resumed>) = 0 [pid 7001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 6995] creat("./bus", 000 [pid 6994] close(4 [pid 6992] close(4 [pid 6994] <... close resumed>) = 0 [pid 6992] <... close resumed>) = 0 [pid 7001] <... openat resumed>) = 3 [pid 6994] creat("./bus", 000 [pid 6992] creat("./bus", 000 [pid 7001] write(3, "1000", 4) = 4 [pid 6995] <... creat resumed>) = 4 [pid 7001] close(3 [pid 6995] unlink("./bus" [pid 7001] <... close resumed>) = 0 [pid 7001] symlink("/dev/binderfs", "./binderfs") = 0 [pid 6995] <... unlink resumed>) = 0 [pid 6995] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6992] <... creat resumed>) = 4 [pid 7001] memfd_create("syzkaller", 0 [pid 6992] unlink("./bus" [pid 6994] <... creat resumed>) = 4 [pid 6994] unlink("./bus") = 0 [ 176.604200][ T6999] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.606742][ T6998] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 176.643051][ T6997] NILFS (loop2): recovery complete [ 176.645371][ T6996] NILFS (loop4): trying rollback from an earlier position [pid 6994] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7001] <... memfd_create resumed>) = 3 [pid 6992] <... unlink resumed>) = 0 [pid 7001] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6997] <... mount resumed>) = 0 [pid 6992] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7001] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6997] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 6995] <... pwritev2 resumed>) = 65007 [pid 6997] <... openat resumed>) = 3 [pid 6995] exit_group(0 [pid 6997] chdir("./file0" [pid 6995] <... exit_group resumed>) = ? [pid 6997] <... chdir resumed>) = 0 [ 176.672165][ T7002] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 6997] ioctl(4, LOOP_CLR_FD) = 0 [pid 6995] +++ exited with 0 +++ [pid 6992] <... pwritev2 resumed>) = 65007 [pid 6997] close(4 [pid 6994] <... pwritev2 resumed>) = 65007 [pid 6992] exit_group(0 [pid 7001] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 6997] <... close resumed>) = 0 [pid 6994] exit_group(0 [pid 6992] <... exit_group resumed>) = ? [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6995, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 6997] creat("./bus", 000 [pid 6994] <... exit_group resumed>) = ? [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 6997] <... creat resumed>) = 4 [pid 6994] +++ exited with 0 +++ [pid 6992] +++ exited with 0 +++ [pid 6997] unlink("./bus" [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6994, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6997] <... unlink resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6992, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7001] <... write resumed>) = 2097152 [pid 6997] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4994] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... restart_syscall resumed>) = 0 [pid 4996] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] fstat(3, [pid 4996] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4994] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] fstat(3, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] lstat("./165/binderfs", [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(3, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./165/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] lstat("./166/binderfs", [pid 4994] <... unlink resumed>) = 0 [pid 4998] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] unlink("./166/binderfs" [pid 4998] lstat("./166/binderfs", [pid 4996] <... unlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] unlink("./166/binderfs") = 0 [pid 4994] <... umount2 resumed>) = 0 [ 176.764604][ T6996] NILFS (loop4): recovery complete [pid 4998] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 6996] <... mount resumed>) = 0 [pid 6996] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 6996] chdir("./file0") = 0 [pid 6996] ioctl(4, LOOP_CLR_FD) = 0 [pid 6996] close(4) = 0 [pid 6996] creat("./bus", 000 [pid 4994] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./165/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 6997] <... pwritev2 resumed>) = 65007 [pid 6997] exit_group(0) = ? [pid 4994] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./165/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./165" [pid 7001] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./166", 0777 [pid 7001] <... munmap resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7001] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4994] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... umount2 resumed>) = 0 [pid 7001] <... openat resumed>) = 4 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7004 [pid 4998] <... umount2 resumed>) = 0 [ 176.803588][ T7003] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7001] ioctl(4, LOOP_SET_FD, 3 [pid 6996] <... creat resumed>) = 4 [pid 6996] unlink("./bus") = 0 [pid 6996] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 6997] +++ exited with 0 +++ ./strace-static-x86_64: Process 7004 attached [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6997, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 7004] chdir("./166") = 0 [pid 7004] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7004] <... prctl resumed>) = 0 [pid 7001] <... ioctl resumed>) = 0 [pid 4998] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7004] setpgid(0, 0 [pid 4995] openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7004] <... setpgid resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 7004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] fstat(3, [pid 7004] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7004] write(3, "1000", 4 [pid 4995] getdents64(3, [pid 7004] <... write resumed>) = 4 [pid 7001] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7004] close(3 [pid 7001] <... close resumed>) = 0 [pid 4998] lstat("./166/file0", [pid 4996] lstat("./166/file0", [pid 4995] umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7004] <... close resumed>) = 0 [pid 7001] mkdir("./file0", 0777 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7004] symlink("/dev/binderfs", "./binderfs" [pid 4995] lstat("./162/binderfs", [pid 7004] <... symlink resumed>) = 0 [pid 7001] <... mkdir resumed>) = 0 [pid 4998] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 176.855091][ T7001] loop0: detected capacity change from 0 to 4096 [pid 7004] memfd_create("syzkaller", 0 [pid 7001] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 6996] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] unlink("./162/binderfs" [pid 7004] <... memfd_create resumed>) = 3 [pid 6996] exit_group(0 [pid 4995] <... unlink resumed>) = 0 [pid 7004] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 6996] <... exit_group resumed>) = ? [pid 4995] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7004] <... mmap resumed>) = 0x7f46b9f9b000 [pid 6996] +++ exited with 0 +++ [pid 4998] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6996, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4998] <... openat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] fstat(4, [pid 4997] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] fstat(4, [pid 4997] lstat("./166/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./166/binderfs") = 0 [pid 4997] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] lstat("./166/file0", [pid 4996] getdents64(4, [pid 4998] close(4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(4 [pid 4998] rmdir("./166/file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... close resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] rmdir("./166/file0" [pid 4998] getdents64(3, [pid 4997] <... openat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] fstat(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./166" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4998] mkdir("./167", 0777 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./166" [pid 4998] <... mkdir resumed>) = 0 [pid 4997] close(4 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... close resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] rmdir("./166/file0" [pid 4996] mkdir("./167", 0777 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] getdents64(3, [pid 4996] <... mkdir resumed>) = 0 [pid 4998] close(3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] <... close resumed>) = 0 [ 176.898690][ T7001] NILFS (loop0): invalid segment: Checksum error in segment payload [ 176.908186][ T7001] NILFS (loop0): trying rollback from an earlier position [pid 4997] close(3) = 0 [pid 4997] rmdir("./166") = 0 [pid 4997] mkdir("./167", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7005 [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7006 [pid 7004] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7007 [pid 4995] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 7005 attached [pid 4995] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7006 attached [pid 7005] chdir("./167" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 7007 attached [pid 7006] chdir("./167" [pid 7005] <... chdir resumed>) = 0 [pid 7007] chdir("./167" [pid 7006] <... chdir resumed>) = 0 [pid 7005] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] lstat("./162/file0", [pid 7007] <... chdir resumed>) = 0 [pid 7006] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7005] <... prctl resumed>) = 0 [pid 7007] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7006] <... prctl resumed>) = 0 [pid 7005] setpgid(0, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7007] <... prctl resumed>) = 0 [pid 7006] setpgid(0, 0 [pid 7005] <... setpgid resumed>) = 0 [pid 4995] umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7007] setpgid(0, 0 [pid 7006] <... setpgid resumed>) = 0 [pid 7005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7007] <... setpgid resumed>) = 0 [pid 7006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7005] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7006] <... openat resumed>) = 3 [pid 7005] write(3, "1000", 4 [pid 4995] <... openat resumed>) = 4 [pid 7007] <... openat resumed>) = 3 [pid 7006] write(3, "1000", 4 [pid 7005] <... write resumed>) = 4 [pid 4995] fstat(4, [pid 7007] write(3, "1000", 4 [pid 7006] <... write resumed>) = 4 [pid 7005] close(3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7007] <... write resumed>) = 4 [pid 7006] close(3 [pid 7005] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 7007] close(3 [pid 7006] <... close resumed>) = 0 [pid 7005] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7007] <... close resumed>) = 0 [pid 7006] symlink("/dev/binderfs", "./binderfs" [pid 7005] <... symlink resumed>) = 0 [ 176.970599][ T7001] NILFS (loop0): recovery complete [pid 4995] getdents64(4, [pid 7007] symlink("/dev/binderfs", "./binderfs" [pid 7006] <... symlink resumed>) = 0 [pid 7005] memfd_create("syzkaller", 0 [pid 7004] <... write resumed>) = 2097152 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7007] <... symlink resumed>) = 0 [pid 7006] memfd_create("syzkaller", 0 [pid 7005] <... memfd_create resumed>) = 3 [pid 7001] <... mount resumed>) = 0 [pid 4995] close(4 [pid 7007] memfd_create("syzkaller", 0 [pid 7006] <... memfd_create resumed>) = 3 [pid 7005] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7004] munmap(0x7f46b9f9b000, 2097152 [pid 7001] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] <... close resumed>) = 0 [pid 7007] <... memfd_create resumed>) = 3 [pid 7006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7005] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7007] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7006] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7004] <... munmap resumed>) = 0 [pid 7001] <... openat resumed>) = 3 [pid 4995] rmdir("./162/file0" [pid 7007] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7004] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7001] chdir("./file0" [pid 4995] <... rmdir resumed>) = 0 [pid 7004] <... openat resumed>) = 4 [pid 7001] <... chdir resumed>) = 0 [ 177.010242][ T7008] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] getdents64(3, [pid 7004] ioctl(4, LOOP_SET_FD, 3 [pid 7001] ioctl(4, LOOP_CLR_FD [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7006] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7005] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7004] <... ioctl resumed>) = 0 [pid 7001] <... ioctl resumed>) = 0 [pid 4995] close(3 [pid 7004] close(3 [pid 7001] close(4 [pid 4995] <... close resumed>) = 0 [pid 7004] <... close resumed>) = 0 [pid 7001] <... close resumed>) = 0 [pid 4995] rmdir("./162") = 0 [pid 7001] creat("./bus", 000 [pid 4995] mkdir("./163", 0777 [pid 7004] mkdir("./file0", 0777 [pid 7001] <... creat resumed>) = 4 [pid 7001] unlink("./bus" [pid 4995] <... mkdir resumed>) = 0 [pid 7004] <... mkdir resumed>) = 0 [pid 7001] <... unlink resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7004] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7001] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... openat resumed>) = 3 [pid 7007] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7001] <... pwritev2 resumed>) = 65007 [pid 7001] exit_group(0) = ? [ 177.058409][ T7004] loop1: detected capacity change from 0 to 4096 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7009 [pid 7001] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7001, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7009 attached ) = -1 EINVAL (Invalid argument) [pid 7009] chdir("./163" [pid 4993] lstat("./166/binderfs", [pid 7009] <... chdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7009] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4993] unlink("./166/binderfs" [pid 7009] <... prctl resumed>) = 0 [pid 7005] <... write resumed>) = 2097152 [pid 4993] <... unlink resumed>) = 0 [pid 7009] setpgid(0, 0 [pid 4993] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7009] <... setpgid resumed>) = 0 [pid 7009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7009] write(3, "1000", 4) = 4 [pid 7009] close(3) = 0 [pid 7009] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7009] memfd_create("syzkaller", 0) = 3 [ 177.123234][ T7004] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7005] munmap(0x7f46b9f9b000, 2097152 [pid 7006] <... write resumed>) = 2097152 [pid 7006] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7005] <... munmap resumed>) = 0 [pid 7007] <... write resumed>) = 2097152 [pid 7006] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7007] munmap(0x7f46b9f9b000, 2097152 [pid 7006] <... openat resumed>) = 4 [pid 7007] <... munmap resumed>) = 0 [pid 7006] ioctl(4, LOOP_SET_FD, 3 [pid 7005] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7005] ioctl(4, LOOP_SET_FD, 3 [pid 7007] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7006] <... ioctl resumed>) = 0 [pid 7007] ioctl(4, LOOP_SET_FD, 3 [ 177.164072][ T7004] NILFS (loop1): trying rollback from an earlier position [ 177.193041][ T7006] loop3: detected capacity change from 0 to 4096 [ 177.194694][ T7005] loop5: detected capacity change from 0 to 4096 [pid 7006] close(3) = 0 [pid 7006] mkdir("./file0", 0777) = 0 [pid 7006] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7007] <... ioctl resumed>) = 0 [pid 7007] close(3 [pid 4993] <... umount2 resumed>) = 0 [pid 7007] <... close resumed>) = 0 [pid 4993] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7007] mkdir("./file0", 0777 [pid 7004] <... mount resumed>) = 0 [pid 7007] <... mkdir resumed>) = 0 [pid 7007] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7005] <... ioctl resumed>) = 0 [pid 7004] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7005] close(3) = 0 [ 177.209070][ T7007] loop4: detected capacity change from 0 to 4096 [ 177.210501][ T7004] NILFS (loop1): recovery complete [ 177.237489][ T7006] NILFS (loop3): invalid segment: Checksum error in segment payload [ 177.247944][ T7010] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7005] mkdir("./file0", 0777) = 0 [pid 7005] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7004] <... openat resumed>) = 3 [pid 4993] lstat("./166/file0", [pid 7004] chdir("./file0") = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7006] <... mount resumed>) = 0 [pid 7004] ioctl(4, LOOP_CLR_FD [pid 7009] <... write resumed>) = 2097152 [pid 7006] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7004] <... ioctl resumed>) = 0 [pid 4993] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7009] munmap(0x7f46b9f9b000, 2097152 [pid 7006] <... openat resumed>) = 3 [pid 7004] close(4 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7009] <... munmap resumed>) = 0 [pid 7006] chdir("./file0" [pid 7004] <... close resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7009] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7006] <... chdir resumed>) = 0 [pid 7004] creat("./bus", 000 [pid 4993] <... openat resumed>) = 4 [pid 7009] <... openat resumed>) = 4 [ 177.260334][ T7006] NILFS (loop3): trying rollback from an earlier position [ 177.275982][ T7006] NILFS (loop3): recovery complete [ 177.278582][ T7007] NILFS (loop4): invalid segment: Checksum error in segment payload [ 177.284873][ T7011] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 177.291589][ T7005] NILFS (loop5): invalid segment: Checksum error in segment payload [ 177.304560][ T7007] NILFS (loop4): trying rollback from an earlier position [pid 7006] ioctl(4, LOOP_CLR_FD [pid 7009] ioctl(4, LOOP_SET_FD, 3 [pid 7006] <... ioctl resumed>) = 0 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./166/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./166") = 0 [pid 4993] mkdir("./167", 0777) = 0 [pid 7006] close(4 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7006] <... close resumed>) = 0 [pid 7004] <... creat resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 7006] creat("./bus", 000 [pid 7004] unlink("./bus" [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7006] <... creat resumed>) = 4 [pid 7004] <... unlink resumed>) = 0 [pid 4993] close(3 [pid 7006] unlink("./bus" [pid 7004] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7006] <... unlink resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7012 [pid 7006] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7012 attached [pid 7012] chdir("./167") = 0 [pid 7012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7012] setpgid(0, 0) = 0 [pid 7012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 177.323888][ T7005] NILFS (loop5): trying rollback from an earlier position [ 177.326446][ T7009] loop2: detected capacity change from 0 to 4096 [pid 7009] <... ioctl resumed>) = 0 [pid 7006] <... pwritev2 resumed>) = 65007 [pid 7004] <... pwritev2 resumed>) = 65007 [pid 7012] write(3, "1000", 4) = 4 [pid 7009] close(3 [pid 7006] exit_group(0 [pid 7004] exit_group(0 [pid 7012] close(3 [pid 7009] <... close resumed>) = 0 [pid 7006] <... exit_group resumed>) = ? [pid 7004] <... exit_group resumed>) = ? [pid 7012] <... close resumed>) = 0 [pid 7007] <... mount resumed>) = 0 [pid 7012] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7012] memfd_create("syzkaller", 0) = 3 [pid 7012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7009] mkdir("./file0", 0777 [pid 7007] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7009] <... mkdir resumed>) = 0 [pid 7007] <... openat resumed>) = 3 [pid 7004] +++ exited with 0 +++ [pid 7009] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7007] chdir("./file0" [pid 7006] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7004, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7006, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7007] <... chdir resumed>) = 0 [ 177.386058][ T7007] NILFS (loop4): recovery complete [ 177.389836][ T7005] NILFS (loop5): recovery complete [ 177.399236][ T7013] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] <... restart_syscall resumed>) = 0 [pid 7012] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7007] ioctl(4, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7007] <... ioctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7007] close(4 [pid 7005] <... mount resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7007] <... close resumed>) = 0 [pid 7005] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] fstat(3, [pid 4994] <... openat resumed>) = 3 [pid 7007] creat("./bus", 000 [pid 7005] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(3, [pid 7005] chdir("./file0" [pid 4996] getdents64(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7007] <... creat resumed>) = 4 [pid 7005] <... chdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] getdents64(3, [pid 7007] unlink("./bus" [pid 7005] ioctl(4, LOOP_CLR_FD [pid 4996] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7007] <... unlink resumed>) = 0 [pid 7005] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7007] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7005] close(4 [pid 4996] lstat("./167/binderfs", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7005] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] lstat("./166/binderfs", [pid 7005] creat("./bus", 000 [pid 4996] unlink("./167/binderfs" [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7005] <... creat resumed>) = 4 [pid 4996] <... unlink resumed>) = 0 [pid 4994] unlink("./166/binderfs" [pid 7005] unlink("./bus" [pid 4996] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4994] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7005] <... unlink resumed>) = 0 [pid 7005] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7007] <... pwritev2 resumed>) = 65007 [pid 7007] exit_group(0) = ? [ 177.430826][ T7009] NILFS (loop2): invalid segment: Checksum error in segment payload [ 177.442466][ T7014] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 177.453816][ T7009] NILFS (loop2): trying rollback from an earlier position [pid 7005] <... pwritev2 resumed>) = 65007 [pid 7005] exit_group(0) = ? [pid 7007] +++ exited with 0 +++ [pid 7009] <... mount resumed>) = 0 [ 177.526295][ T7009] NILFS (loop2): recovery complete [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7007, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4997] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7012] <... write resumed>) = 2097152 [pid 4997] <... openat resumed>) = 3 [pid 7009] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] fstat(3, [pid 7009] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7009] chdir("./file0" [pid 4997] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7009] <... chdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7009] ioctl(4, LOOP_CLR_FD [pid 4997] lstat("./167/binderfs", [pid 4996] <... umount2 resumed>) = 0 [pid 7009] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7009] close(4 [pid 7005] +++ exited with 0 +++ [pid 4997] unlink("./167/binderfs" [pid 7009] <... close resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7005, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] <... unlink resumed>) = 0 [pid 7009] creat("./bus", 000 [pid 4997] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7009] <... creat resumed>) = 4 [pid 7009] unlink("./bus" [pid 4998] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7009] <... unlink resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7012] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... openat resumed>) = 3 [pid 7012] <... munmap resumed>) = 0 [pid 7009] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7012] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] lstat("./167/binderfs", [pid 7012] <... openat resumed>) = 4 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7012] ioctl(4, LOOP_SET_FD, 3 [ 177.550628][ T7015] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] unlink("./167/binderfs") = 0 [pid 4996] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./167/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./167/file0") = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4998] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./167" [pid 7009] <... pwritev2 resumed>) = 65007 [pid 4998] lstat("./167/file0", [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7009] exit_group(0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] mkdir("./168", 0777 [pid 7009] <... exit_group resumed>) = ? [pid 4998] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... mkdir resumed>) = 0 [pid 4994] lstat("./166/file0", [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4998] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 4 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(3 [pid 4998] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7012] <... ioctl resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 4 [pid 7012] close(3 [pid 4998] getdents64(4, [pid 4994] fstat(4, [pid 7012] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7016 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7012] mkdir("./file0", 0777 [pid 4998] close(4 [pid 4994] getdents64(4, [pid 7012] <... mkdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 7012] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] rmdir("./167/file0" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] getdents64(4, ./strace-static-x86_64: Process 7016 attached [pid 4998] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7016] chdir("./168" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [ 177.602161][ T7012] loop0: detected capacity change from 0 to 4096 [pid 4994] close(4 [pid 7016] <... chdir resumed>) = 0 [pid 7009] +++ exited with 0 +++ [pid 4998] close(3 [pid 4994] <... close resumed>) = 0 [pid 7016] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... close resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7009, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] rmdir("./166/file0" [pid 7016] <... prctl resumed>) = 0 [pid 4998] rmdir("./167" [pid 7016] setpgid(0, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 7016] <... setpgid resumed>) = 0 [pid 4998] mkdir("./168", 0777 [pid 4995] umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 7016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... mkdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7016] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... umount2 resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 7016] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 3 [pid 4997] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4994] <... close resumed>) = 0 [pid 7016] <... write resumed>) = 4 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] fstat(3, [pid 4994] rmdir("./166" [pid 7016] close(3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] lstat("./167/file0", [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7016] <... close resumed>) = 0 [pid 4998] close(3 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4994] <... rmdir resumed>) = 0 [pid 7016] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] mkdir("./167", 0777 [pid 7016] <... symlink resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7016] memfd_create("syzkaller", 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... mkdir resumed>) = 0 [pid 7016] <... memfd_create resumed>) = 3 [pid 4997] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] lstat("./163/binderfs", [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7017 [pid 4997] <... openat resumed>) = 4 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7016] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] fstat(4, [pid 4995] unlink("./163/binderfs" [pid 4994] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 7017 attached [pid 7016] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7017] chdir("./168" [pid 4997] getdents64(4, [pid 4995] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(3 [pid 7017] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... close resumed>) = 0 [pid 7017] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] getdents64(4, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7017] <... prctl resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7017] setpgid(0, 0 [pid 4997] close(4 [pid 7017] <... setpgid resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7019 [pid 7017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] rmdir("./167/file0"./strace-static-x86_64: Process 7019 attached [pid 7019] chdir("./167" [pid 7017] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 7017] write(3, "1000", 4 [pid 4997] getdents64(3, [pid 7017] <... write resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7017] close(3 [pid 4997] close(3 [pid 7017] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 7019] <... chdir resumed>) = 0 [pid 7017] symlink("/dev/binderfs", "./binderfs" [pid 4997] rmdir("./167" [pid 7017] <... symlink resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 7019] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7017] memfd_create("syzkaller", 0 [pid 4997] mkdir("./168", 0777 [pid 7017] <... memfd_create resumed>) = 3 [pid 7019] <... prctl resumed>) = 0 [pid 7017] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... mkdir resumed>) = 0 [pid 7019] setpgid(0, 0 [pid 7017] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 177.679156][ T7012] NILFS (loop0): invalid segment: Checksum error in segment payload [ 177.705514][ T7012] NILFS (loop0): trying rollback from an earlier position [ 177.723028][ T7012] NILFS (loop0): recovery complete [pid 7019] <... setpgid resumed>) = 0 [pid 4997] close(3 [pid 7019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 7019] <... openat resumed>) = 3 [pid 7012] <... mount resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7019] write(3, "1000", 4 [pid 7012] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7019] <... write resumed>) = 4 [pid 7012] <... openat resumed>) = 3 [pid 7019] close(3 [pid 7012] chdir("./file0" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7020 [pid 7019] <... close resumed>) = 0 [pid 7012] <... chdir resumed>) = 0 [pid 7019] symlink("/dev/binderfs", "./binderfs" [pid 7012] ioctl(4, LOOP_CLR_FD) = 0 [pid 7012] close(4 [pid 7019] <... symlink resumed>) = 0 [pid 7012] <... close resumed>) = 0 ./strace-static-x86_64: Process 7020 attached [pid 7019] memfd_create("syzkaller", 0 [pid 7012] creat("./bus", 000 [pid 7020] chdir("./168" [pid 7019] <... memfd_create resumed>) = 3 [pid 7020] <... chdir resumed>) = 0 [pid 7019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7020] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7019] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7020] <... prctl resumed>) = 0 [pid 7020] setpgid(0, 0) = 0 [pid 4995] lstat("./163/file0", [pid 7020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7020] write(3, "1000", 4 [pid 4995] umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7020] <... write resumed>) = 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7020] close(3 [pid 4995] openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7020] <... close resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 7020] symlink("/dev/binderfs", "./binderfs" [pid 4995] fstat(4, [pid 7020] <... symlink resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7020] memfd_create("syzkaller", 0 [pid 4995] getdents64(4, [pid 7017] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7020] <... memfd_create resumed>) = 3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] getdents64(4, [pid 7020] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [ 177.754201][ T7018] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] rmdir("./163/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./163") = 0 [pid 4995] mkdir("./164", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 7012] <... creat resumed>) = 4 [pid 4995] <... close resumed>) = 0 [pid 7012] unlink("./bus" [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7021 [pid 7012] <... unlink resumed>) = 0 [pid 7012] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7021 attached [pid 7021] chdir("./164") = 0 [pid 7021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7016] <... write resumed>) = 2097152 [pid 7021] setpgid(0, 0 [pid 7016] munmap(0x7f46b9f9b000, 2097152 [pid 7021] <... setpgid resumed>) = 0 [pid 7021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7021] write(3, "1000", 4 [pid 7016] <... munmap resumed>) = 0 [pid 7021] <... write resumed>) = 4 [pid 7016] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7021] close(3 [pid 7016] <... openat resumed>) = 4 [pid 7021] <... close resumed>) = 0 [pid 7016] ioctl(4, LOOP_SET_FD, 3 [pid 7021] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7021] memfd_create("syzkaller", 0) = 3 [pid 7021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7016] <... ioctl resumed>) = 0 [pid 7016] close(3) = 0 [pid 7012] <... pwritev2 resumed>) = 65007 [pid 7016] mkdir("./file0", 0777 [pid 7012] exit_group(0 [pid 7016] <... mkdir resumed>) = 0 [pid 7012] <... exit_group resumed>) = ? [pid 7016] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 177.856641][ T7016] loop3: detected capacity change from 0 to 4096 [pid 7012] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7012, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7017] <... write resumed>) = 2097152 [pid 4993] <... openat resumed>) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./167/binderfs", [pid 7021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./167/binderfs" [pid 7017] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... unlink resumed>) = 0 [pid 7017] <... munmap resumed>) = 0 [pid 4993] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7017] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7017] ioctl(4, LOOP_SET_FD, 3 [pid 7020] <... write resumed>) = 2097152 [pid 7019] <... write resumed>) = 2097152 [pid 7019] munmap(0x7f46b9f9b000, 2097152 [pid 7020] munmap(0x7f46b9f9b000, 2097152 [pid 7019] <... munmap resumed>) = 0 [pid 7019] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7020] <... munmap resumed>) = 0 [pid 7019] <... openat resumed>) = 4 [pid 7020] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7019] ioctl(4, LOOP_SET_FD, 3 [pid 7020] <... openat resumed>) = 4 [ 177.899551][ T7016] NILFS (loop3): invalid segment: Checksum error in segment payload [ 177.929693][ T7016] NILFS (loop3): trying rollback from an earlier position [ 177.932855][ T7017] loop5: detected capacity change from 0 to 4096 [pid 7017] <... ioctl resumed>) = 0 [pid 7017] close(3) = 0 [pid 7017] mkdir("./file0", 0777) = 0 [pid 7020] ioctl(4, LOOP_SET_FD, 3 [pid 7019] <... ioctl resumed>) = 0 [pid 7017] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7019] close(3) = 0 [pid 7019] mkdir("./file0", 0777 [pid 7020] <... ioctl resumed>) = 0 [pid 7019] <... mkdir resumed>) = 0 [pid 7020] close(3 [pid 7019] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7020] <... close resumed>) = 0 [ 177.961544][ T7019] loop1: detected capacity change from 0 to 4096 [ 177.970358][ T7020] loop4: detected capacity change from 0 to 4096 [ 177.986268][ T7016] NILFS (loop3): recovery complete [ 177.998863][ T7017] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 7020] mkdir("./file0", 0777 [pid 7021] <... write resumed>) = 2097152 [pid 7020] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 7020] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./167/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7021] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7021] <... munmap resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 7021] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] rmdir("./167/file0" [pid 7021] <... openat resumed>) = 4 [pid 4993] <... rmdir resumed>) = 0 [pid 7021] ioctl(4, LOOP_SET_FD, 3 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./167") = 0 [pid 4993] mkdir("./168", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 178.007835][ T7019] NILFS (loop1): invalid segment: Checksum error in segment payload [ 178.011004][ T7020] NILFS (loop4): invalid segment: Checksum error in segment payload [ 178.027003][ T7019] NILFS (loop1): trying rollback from an earlier position [ 178.031125][ T7021] loop2: detected capacity change from 0 to 4096 [ 178.034768][ T7017] NILFS (loop5): trying rollback from an earlier position [pid 4993] close(3 [pid 7016] <... mount resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7023 [pid 7021] <... ioctl resumed>) = 0 [pid 7021] close(3) = 0 [pid 7021] mkdir("./file0", 0777) = 0 [pid 7021] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7016] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY./strace-static-x86_64: Process 7023 attached ) = 3 [pid 7016] chdir("./file0") = 0 [pid 7023] chdir("./168" [pid 7016] ioctl(4, LOOP_CLR_FD [pid 7023] <... chdir resumed>) = 0 [pid 7016] <... ioctl resumed>) = 0 [pid 7023] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7016] close(4 [pid 7023] <... prctl resumed>) = 0 [pid 7019] <... mount resumed>) = 0 [pid 7016] <... close resumed>) = 0 [pid 7016] creat("./bus", 000 [pid 7023] setpgid(0, 0) = 0 [pid 7019] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7019] <... openat resumed>) = 3 [ 178.054350][ T7022] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.064680][ T7019] NILFS (loop1): recovery complete [ 178.079067][ T7024] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.096723][ T7020] NILFS (loop4): trying rollback from an earlier position [ 178.098648][ T7017] NILFS (loop5): recovery complete [pid 7023] write(3, "1000", 4 [pid 7019] chdir("./file0" [pid 7023] <... write resumed>) = 4 [pid 7019] <... chdir resumed>) = 0 [pid 7023] close(3 [pid 7019] ioctl(4, LOOP_CLR_FD [pid 7023] <... close resumed>) = 0 [pid 7019] <... ioctl resumed>) = 0 [pid 7023] symlink("/dev/binderfs", "./binderfs" [pid 7019] close(4 [pid 7016] <... creat resumed>) = 4 [pid 7023] <... symlink resumed>) = 0 [pid 7019] <... close resumed>) = 0 [pid 7016] unlink("./bus" [pid 7023] memfd_create("syzkaller", 0 [pid 7019] creat("./bus", 000 [pid 7016] <... unlink resumed>) = 0 [pid 7023] <... memfd_create resumed>) = 3 [pid 7016] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 178.109417][ T7021] NILFS (loop2): invalid segment: Checksum error in segment payload [ 178.113475][ T7020] NILFS (loop4): recovery complete [ 178.125588][ T7021] NILFS (loop2): trying rollback from an earlier position [ 178.144561][ T7025] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7020] <... mount resumed>) = 0 [pid 7019] <... creat resumed>) = 4 [pid 7017] <... mount resumed>) = 0 [pid 7020] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7019] unlink("./bus" [pid 7017] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7020] <... openat resumed>) = 3 [pid 7019] <... unlink resumed>) = 0 [pid 7017] <... openat resumed>) = 3 [pid 7020] chdir("./file0" [pid 7019] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7017] chdir("./file0" [pid 7020] <... chdir resumed>) = 0 [pid 7017] <... chdir resumed>) = 0 [pid 7020] ioctl(4, LOOP_CLR_FD [pid 7017] ioctl(4, LOOP_CLR_FD [pid 7020] <... ioctl resumed>) = 0 [pid 7019] <... pwritev2 resumed>) = 65007 [pid 7017] <... ioctl resumed>) = 0 [pid 7016] <... pwritev2 resumed>) = 65007 [pid 7020] close(4 [pid 7019] exit_group(0 [pid 7017] close(4 [pid 7016] exit_group(0 [pid 7020] <... close resumed>) = 0 [pid 7019] <... exit_group resumed>) = ? [pid 7017] <... close resumed>) = 0 [pid 7016] <... exit_group resumed>) = ? [pid 7020] creat("./bus", 000 [pid 7017] creat("./bus", 000 [pid 7021] <... mount resumed>) = 0 [pid 7021] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7020] <... creat resumed>) = 4 [pid 7017] <... creat resumed>) = 4 [pid 7021] <... openat resumed>) = 3 [pid 7020] unlink("./bus" [pid 7017] unlink("./bus" [pid 7021] chdir("./file0" [pid 7020] <... unlink resumed>) = 0 [pid 7017] <... unlink resumed>) = 0 [pid 7021] <... chdir resumed>) = 0 [pid 7020] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7017] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7021] ioctl(4, LOOP_CLR_FD) = 0 [ 178.156830][ T7026] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.171499][ T7021] NILFS (loop2): recovery complete [ 178.195732][ T7027] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7021] close(4) = 0 [pid 7021] creat("./bus", 000 [pid 7020] <... pwritev2 resumed>) = 65007 [pid 7020] exit_group(0 [pid 7019] +++ exited with 0 +++ [pid 7016] +++ exited with 0 +++ [pid 7020] <... exit_group resumed>) = ? [pid 7017] <... pwritev2 resumed>) = 65007 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7016, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 7017] exit_group(0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7019, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 7021] <... creat resumed>) = 4 [pid 7017] <... exit_group resumed>) = ? [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7021] unlink("./bus" [pid 4996] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... restart_syscall resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7021] <... unlink resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7021] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./168/binderfs") = 0 [pid 4996] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7017] +++ exited with 0 +++ [pid 4994] <... openat resumed>) = 3 [pid 7020] +++ exited with 0 +++ [pid 4994] fstat(3, [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7017, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7020, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4997] <... restart_syscall resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7021] <... pwritev2 resumed>) = 65007 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7021] exit_group(0) = ? [pid 4998] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(3, [pid 4997] <... openat resumed>) = 3 [pid 4994] lstat("./167/binderfs", [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(3, [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] getdents64(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] unlink("./167/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(3, [pid 4998] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./168/binderfs", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] lstat("./168/binderfs", [pid 4998] unlink("./168/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7021] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7021, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] unlink("./168/binderfs" [pid 4995] getdents64(3, [pid 7023] <... write resumed>) = 2097152 [pid 4998] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = 0 [pid 4995] lstat("./164/binderfs", [pid 4998] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] unlink("./164/binderfs" [pid 4998] lstat("./168/file0", [pid 4995] <... unlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7023] munmap(0x7f46b9f9b000, 2097152 [pid 4998] fstat(4, [pid 7023] <... munmap resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./168/file0") = 0 [pid 4998] getdents64(3, [pid 7023] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7023] <... openat resumed>) = 4 [pid 4998] close(3) = 0 [pid 4998] rmdir("./168") = 0 [pid 4998] mkdir("./169", 0777 [pid 7023] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... umount2 resumed>) = 0 [pid 4996] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 7023] <... ioctl resumed>) = 0 [pid 4997] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./168/file0", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] lstat("./168/file0", [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./167/file0", [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] close(3 [pid 4997] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] lstat("./164/file0", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7028 [pid 4997] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 4 [pid 4995] umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7023] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4996] fstat(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 7023] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(4, [pid 7023] mkdir("./file0", 0777 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4995] <... openat resumed>) = 4 [pid 7023] <... mkdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] fstat(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7023] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./168/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(4, ./strace-static-x86_64: Process 7028 attached [pid 4997] close(4 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 178.365574][ T7023] loop0: detected capacity change from 0 to 4096 [pid 7028] chdir("./169" [pid 4997] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4994] close(4 [pid 7028] <... chdir resumed>) = 0 [pid 4997] rmdir("./168/file0" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./164/file0" [pid 4994] <... close resumed>) = 0 [pid 7028] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] rmdir("./167/file0" [pid 7028] <... prctl resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 4995] getdents64(3, [pid 4994] <... rmdir resumed>) = 0 [pid 7028] setpgid(0, 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./168" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(3, [pid 7028] <... setpgid resumed>) = 0 [pid 4997] close(3 [pid 4995] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... close resumed>) = 0 [pid 4996] mkdir("./169", 0777 [pid 4995] <... close resumed>) = 0 [pid 4994] close(3 [pid 7028] <... openat resumed>) = 3 [pid 4997] rmdir("./168" [pid 4996] <... mkdir resumed>) = 0 [pid 4995] rmdir("./164" [pid 4994] <... close resumed>) = 0 [pid 7028] write(3, "1000", 4 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... rmdir resumed>) = 0 [pid 4994] rmdir("./167" [pid 7028] <... write resumed>) = 4 [pid 4995] mkdir("./165", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] mkdir("./169", 0777 [pid 4996] <... openat resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7029 ./strace-static-x86_64: Process 7029 attached [pid 7028] close(3 [pid 7029] chdir("./165") = 0 [pid 7029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7029] setpgid(0, 0) = 0 [pid 7029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 7028] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7028] symlink("/dev/binderfs", "./binderfs" [pid 4994] mkdir("./168", 0777 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7029] write(3, "1000", 4 [pid 7028] <... symlink resumed>) = 0 [pid 7029] <... write resumed>) = 4 [pid 4996] close(3 [pid 4994] <... mkdir resumed>) = 0 [pid 7029] close(3 [pid 7028] memfd_create("syzkaller", 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 7029] <... close resumed>) = 0 [pid 7028] <... memfd_create resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7029] symlink("/dev/binderfs", "./binderfs" [pid 7028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7029] <... symlink resumed>) = 0 [pid 7028] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] close(3 [pid 4994] <... openat resumed>) = 3 [pid 7029] memfd_create("syzkaller", 0) = 3 [pid 7029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] <... close resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7030 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [ 178.436085][ T7023] NILFS (loop0): invalid segment: Checksum error in segment payload [ 178.453623][ T7023] NILFS (loop0): trying rollback from an earlier position [pid 4994] close(3./strace-static-x86_64: Process 7030 attached [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7031 [pid 7030] chdir("./169" [pid 4994] <... close resumed>) = 0 [pid 7030] <... chdir resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7031 attached [pid 7030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7030] setpgid(0, 0 [pid 7031] chdir("./169" [pid 7030] <... setpgid resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7032 [pid 7031] <... chdir resumed>) = 0 [pid 7030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7031] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7030] <... openat resumed>) = 3 [pid 7031] <... prctl resumed>) = 0 [pid 7030] write(3, "1000", 4./strace-static-x86_64: Process 7032 attached [pid 7031] setpgid(0, 0 [pid 7030] <... write resumed>) = 4 [pid 7032] chdir("./168" [pid 7031] <... setpgid resumed>) = 0 [pid 7030] close(3 [pid 7032] <... chdir resumed>) = 0 [pid 7031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7030] <... close resumed>) = 0 [pid 7032] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7031] <... openat resumed>) = 3 [pid 7030] symlink("/dev/binderfs", "./binderfs" [pid 7032] <... prctl resumed>) = 0 [pid 7031] write(3, "1000", 4 [pid 7030] <... symlink resumed>) = 0 [pid 7032] setpgid(0, 0 [pid 7031] <... write resumed>) = 4 [pid 7030] memfd_create("syzkaller", 0 [pid 7032] <... setpgid resumed>) = 0 [pid 7031] close(3 [pid 7030] <... memfd_create resumed>) = 3 [pid 7032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7031] <... close resumed>) = 0 [pid 7030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7032] <... openat resumed>) = 3 [pid 7031] symlink("/dev/binderfs", "./binderfs" [pid 7030] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7032] write(3, "1000", 4 [pid 7031] <... symlink resumed>) = 0 [pid 7032] <... write resumed>) = 4 [pid 7031] memfd_create("syzkaller", 0 [pid 7032] close(3 [pid 7031] <... memfd_create resumed>) = 3 [pid 7032] <... close resumed>) = 0 [pid 7031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7032] symlink("/dev/binderfs", "./binderfs" [pid 7031] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7032] <... symlink resumed>) = 0 [pid 7032] memfd_create("syzkaller", 0) = 3 [pid 7032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7023] <... mount resumed>) = 0 [pid 7030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7023] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7023] <... openat resumed>) = 3 [pid 7023] chdir("./file0" [pid 7028] <... write resumed>) = 2097152 [pid 7023] <... chdir resumed>) = 0 [pid 7028] munmap(0x7f46b9f9b000, 2097152 [pid 7023] ioctl(4, LOOP_CLR_FD [pid 7028] <... munmap resumed>) = 0 [pid 7023] <... ioctl resumed>) = 0 [pid 7029] <... write resumed>) = 2097152 [pid 7028] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7023] close(4 [pid 7029] munmap(0x7f46b9f9b000, 2097152 [pid 7028] <... openat resumed>) = 4 [pid 7023] <... close resumed>) = 0 [pid 7032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7028] ioctl(4, LOOP_SET_FD, 3 [pid 7023] creat("./bus", 000 [pid 7029] <... munmap resumed>) = 0 [ 178.554668][ T7023] NILFS (loop0): recovery complete [ 178.562746][ T7033] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7028] <... ioctl resumed>) = 0 [pid 7023] <... creat resumed>) = 4 [pid 7029] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7023] unlink("./bus" [pid 7029] <... openat resumed>) = 4 [pid 7029] ioctl(4, LOOP_SET_FD, 3 [pid 7023] <... unlink resumed>) = 0 [pid 7023] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7030] <... write resumed>) = 2097152 [pid 7028] close(3) = 0 [pid 7028] mkdir("./file0", 0777 [pid 7030] munmap(0x7f46b9f9b000, 2097152 [pid 7023] <... pwritev2 resumed>) = 65007 [pid 7030] <... munmap resumed>) = 0 [pid 7028] <... mkdir resumed>) = 0 [pid 7023] exit_group(0 [pid 7031] <... write resumed>) = 2097152 [pid 7029] <... ioctl resumed>) = 0 [pid 7028] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7023] <... exit_group resumed>) = ? [pid 7032] <... write resumed>) = 2097152 [pid 7031] munmap(0x7f46b9f9b000, 2097152 [pid 7030] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7029] close(3 [ 178.616000][ T7028] loop5: detected capacity change from 0 to 4096 [ 178.638730][ T7029] loop2: detected capacity change from 0 to 4096 [pid 7032] munmap(0x7f46b9f9b000, 2097152 [pid 7030] <... openat resumed>) = 4 [pid 7032] <... munmap resumed>) = 0 [pid 7032] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7032] ioctl(4, LOOP_SET_FD, 3 [pid 7031] <... munmap resumed>) = 0 [pid 7030] ioctl(4, LOOP_SET_FD, 3 [pid 7029] <... close resumed>) = 0 [pid 7032] <... ioctl resumed>) = 0 [pid 7032] close(3) = 0 [pid 7032] mkdir("./file0", 0777) = 0 [pid 7032] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7031] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7023] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7023, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 7031] <... openat resumed>) = 4 [pid 7030] <... ioctl resumed>) = 0 [pid 7029] mkdir("./file0", 0777 [pid 7031] ioctl(4, LOOP_SET_FD, 3 [pid 7030] close(3 [pid 7029] <... mkdir resumed>) = 0 [pid 7031] <... ioctl resumed>) = 0 [pid 7030] <... close resumed>) = 0 [pid 7029] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7030] mkdir("./file0", 0777 [pid 7031] close(3 [pid 7030] <... mkdir resumed>) = 0 [pid 7031] <... close resumed>) = 0 [pid 7030] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7031] mkdir("./file0", 0777) = 0 [ 178.678993][ T7028] NILFS (loop5): invalid segment: Checksum error in segment payload [ 178.685440][ T7032] loop1: detected capacity change from 0 to 4096 [ 178.689710][ T7028] NILFS (loop5): trying rollback from an earlier position [ 178.701226][ T7030] loop3: detected capacity change from 0 to 4096 [ 178.715185][ T7031] loop4: detected capacity change from 0 to 4096 [ 178.717996][ T7028] NILFS (loop5): recovery complete [pid 7031] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 178.731932][ T7029] NILFS (loop2): invalid segment: Checksum error in segment payload [ 178.731932][ T7030] NILFS (loop3): invalid segment: Checksum error in segment payload [ 178.731956][ T7030] NILFS (loop3): trying rollback from an earlier position [ 178.740537][ T7029] NILFS (loop2): trying rollback from an earlier position [ 178.748771][ T7032] NILFS (loop1): invalid segment: Checksum error in segment payload [ 178.765921][ T7029] NILFS (loop2): recovery complete [pid 4993] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, [pid 7028] <... mount resumed>) = 0 [pid 7028] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7028] chdir("./file0") = 0 [pid 7028] ioctl(4, LOOP_CLR_FD) = 0 [pid 7028] close(4) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7028] creat("./bus", 000 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./168/binderfs") = 0 [pid 4993] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7032] <... mount resumed>) = 0 [ 178.777560][ T7031] NILFS (loop4): invalid segment: Checksum error in segment payload [ 178.778649][ T7032] NILFS (loop1): trying rollback from an earlier position [ 178.785947][ T7034] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.798363][ T7031] NILFS (loop4): trying rollback from an earlier position [ 178.811876][ T7032] NILFS (loop1): recovery complete [ 178.814272][ T7030] NILFS (loop3): recovery complete [pid 7032] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7030] <... mount resumed>) = 0 [pid 7030] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7030] chdir("./file0") = 0 [pid 7030] ioctl(4, LOOP_CLR_FD) = 0 [pid 7030] close(4) = 0 [pid 7030] creat("./bus", 000 [pid 7032] <... openat resumed>) = 3 [pid 7032] chdir("./file0") = 0 [pid 7032] ioctl(4, LOOP_CLR_FD) = 0 [pid 7032] close(4) = 0 [pid 7029] <... mount resumed>) = 0 [pid 7029] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7029] chdir("./file0") = 0 [pid 7029] ioctl(4, LOOP_CLR_FD) = 0 [pid 7029] close(4) = 0 [pid 7029] creat("./bus", 000 [pid 7032] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = 0 [pid 7032] <... creat resumed>) = 4 [pid 7032] unlink("./bus" [pid 4993] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./168/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7032] <... unlink resumed>) = 0 [pid 4993] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7032] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7028] <... creat resumed>) = 4 [pid 4993] <... openat resumed>) = 4 [pid 7028] unlink("./bus" [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 7028] <... unlink resumed>) = 0 [ 178.845159][ T7036] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.848887][ T7037] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.868944][ T7035] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 178.870902][ T7031] NILFS (loop4): recovery complete [pid 7028] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7032] <... pwritev2 resumed>) = 65007 [pid 7031] <... mount resumed>) = 0 [pid 7030] <... creat resumed>) = 4 [pid 7032] exit_group(0 [pid 7031] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7030] unlink("./bus" [pid 7029] <... creat resumed>) = 4 [pid 7032] <... exit_group resumed>) = ? [pid 7031] <... openat resumed>) = 3 [pid 7029] unlink("./bus" [pid 7031] chdir("./file0" [pid 7030] <... unlink resumed>) = 0 [pid 7029] <... unlink resumed>) = 0 [pid 4993] getdents64(4, [pid 7031] <... chdir resumed>) = 0 [pid 7030] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7029] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7032] +++ exited with 0 +++ [pid 7031] ioctl(4, LOOP_CLR_FD [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7031] <... ioctl resumed>) = 0 [pid 7031] close(4 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7032, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] close(4 [pid 7031] <... close resumed>) = 0 [pid 7031] creat("./bus", 000 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./168/file0" [pid 7030] <... pwritev2 resumed>) = 65007 [pid 7030] exit_group(0) = ? [pid 7031] <... creat resumed>) = 4 [pid 4993] <... rmdir resumed>) = 0 [pid 7031] unlink("./bus" [pid 7028] <... pwritev2 resumed>) = 65007 [pid 4993] getdents64(3, [pid 7028] exit_group(0) = ? [pid 7031] <... unlink resumed>) = 0 [ 178.929923][ T7038] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7031] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3 [pid 7029] <... pwritev2 resumed>) = 65007 [pid 7029] exit_group(0) = ? [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] rmdir("./168" [pid 7031] <... pwritev2 resumed>) = 65007 [pid 7031] exit_group(0) = ? [pid 4994] <... openat resumed>) = 3 [pid 4993] <... rmdir resumed>) = 0 [pid 7028] +++ exited with 0 +++ [pid 4994] fstat(3, [pid 4993] mkdir("./169", 0777 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7028, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] getdents64(3, [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7029] +++ exited with 0 +++ [pid 7030] +++ exited with 0 +++ [pid 4998] <... restart_syscall resumed>) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7029, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 3 [pid 7031] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7030, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7031, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4995] umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./168/binderfs", [pid 4998] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] <... restart_syscall resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./168/binderfs" [pid 4998] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(3, [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(3, [pid 4997] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3 [pid 4995] getdents64(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 4995] umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] getdents64(3, [pid 4995] lstat("./165/binderfs", [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] lstat("./169/binderfs", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] unlink("./165/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] lstat("./169/binderfs", [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./169/binderfs", [pid 4997] unlink("./169/binderfs" [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7039 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4996] unlink("./169/binderfs" [pid 4995] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] unlink("./169/binderfs" [pid 4997] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7039 attached [pid 7039] chdir("./169") = 0 [pid 7039] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... unlink resumed>) = 0 [pid 7039] <... prctl resumed>) = 0 [pid 7039] setpgid(0, 0) = 0 [pid 7039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7039] write(3, "1000", 4) = 4 [pid 7039] close(3) = 0 [pid 4998] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7039] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7039] memfd_create("syzkaller", 0) = 3 [pid 7039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./168/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4994] fstat(4, [pid 4996] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, [pid 4996] lstat("./169/file0", [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 4996] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] rmdir("./168/file0" [pid 4998] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] lstat("./169/file0", [pid 4994] <... rmdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(3, [pid 4998] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(3 [pid 4998] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] close(4 [pid 4994] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4994] rmdir("./168" [pid 4998] fstat(4, [pid 4997] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] rmdir("./169/file0" [pid 4994] <... rmdir resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... rmdir resumed>) = 0 [pid 4994] mkdir("./169", 0777 [pid 4998] getdents64(4, [pid 4997] lstat("./169/file0", [pid 4996] getdents64(3, [pid 4994] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4998] getdents64(4, [pid 4996] close(3 [pid 4994] <... openat resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4997] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4998] <... close resumed>) = 0 [pid 4996] rmdir("./169" [pid 4998] rmdir("./169/file0" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... rmdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] mkdir("./170", 0777 [pid 4998] getdents64(3, [pid 4997] <... openat resumed>) = 4 [pid 4996] <... mkdir resumed>) = 0 [pid 4994] close(3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] fstat(4, [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... close resumed>) = 0 [pid 4998] close(3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4998] rmdir("./169" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7040 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] close(3 [pid 4998] mkdir("./170", 0777 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... close resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] close(4 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7040 attached [pid 7039] <... write resumed>) = 2097152 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 7040] chdir("./169" [pid 4998] <... openat resumed>) = 3 [pid 4997] rmdir("./169/file0" [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7041 [pid 4995] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7040] <... chdir resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7040] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7039] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] getdents64(3, [pid 4995] lstat("./165/file0", [pid 7040] <... prctl resumed>) = 0 [pid 4998] close(3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7039] <... munmap resumed>) = 0 [pid 7040] setpgid(0, 0 [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4995] umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7040] <... setpgid resumed>) = 0 [pid 7039] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 7041 attached [pid 7040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] rmdir("./169" [pid 7041] chdir("./170" [pid 7040] <... openat resumed>) = 3 [pid 7039] <... openat resumed>) = 4 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7041] <... chdir resumed>) = 0 [pid 7040] write(3, "1000", 4 [pid 7039] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7042 [pid 4997] mkdir("./170", 0777 [pid 4995] <... openat resumed>) = 4 [pid 7041] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7040] <... write resumed>) = 4 [pid 4997] <... mkdir resumed>) = 0 [pid 7041] <... prctl resumed>) = 0 [pid 7040] close(3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7041] setpgid(0, 0 [pid 7040] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 7041] <... setpgid resumed>) = 0 [pid 7040] symlink("/dev/binderfs", "./binderfs" [pid 4997] ioctl(3, LOOP_CLR_FD [pid 7041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7040] <... symlink resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7041] <... openat resumed>) = 3 [pid 7040] memfd_create("syzkaller", 0 [pid 7039] <... ioctl resumed>) = 0 [pid 4997] close(3 [pid 4995] fstat(4, [pid 7041] write(3, "1000", 4 [pid 7040] <... memfd_create resumed>) = 3 [pid 7039] close(3 [pid 4997] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 7042 attached [pid 7041] <... write resumed>) = 4 [pid 7040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7039] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7042] chdir("./170" [pid 7041] close(3 [pid 7040] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7039] mkdir("./file0", 0777 [pid 4995] getdents64(4, [pid 7042] <... chdir resumed>) = 0 [pid 7041] <... close resumed>) = 0 [pid 7040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7039] <... mkdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7043 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7042] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7041] symlink("/dev/binderfs", "./binderfs" [pid 7039] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] getdents64(4, [pid 7042] <... prctl resumed>) = 0 [pid 7041] <... symlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7041] memfd_create("syzkaller", 0) = 3 [pid 7041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7042] setpgid(0, 0 [pid 4995] close(4./strace-static-x86_64: Process 7043 attached [pid 7042] <... setpgid resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7043] chdir("./170" [pid 7042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] rmdir("./165/file0" [pid 7043] <... chdir resumed>) = 0 [pid 7042] <... openat resumed>) = 3 [pid 7043] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7042] write(3, "1000", 4 [pid 4995] <... rmdir resumed>) = 0 [pid 7042] <... write resumed>) = 4 [pid 4995] getdents64(3, [pid 7042] close(3 [pid 7043] <... prctl resumed>) = 0 [pid 7042] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7043] setpgid(0, 0 [pid 7042] symlink("/dev/binderfs", "./binderfs" [pid 7043] <... setpgid resumed>) = 0 [pid 7043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7043] write(3, "1000", 4) = 4 [pid 7043] close(3) = 0 [pid 7043] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7042] <... symlink resumed>) = 0 [pid 4995] close(3 [pid 7043] memfd_create("syzkaller", 0 [pid 7042] memfd_create("syzkaller", 0 [pid 4995] <... close resumed>) = 0 [pid 7043] <... memfd_create resumed>) = 3 [pid 7042] <... memfd_create resumed>) = 3 [pid 4995] rmdir("./165" [pid 7043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7043] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7042] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... rmdir resumed>) = 0 [ 179.195314][ T7039] loop0: detected capacity change from 0 to 4096 [ 179.232304][ T7039] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4995] mkdir("./166", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7044 [pid 7043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 7044 attached [pid 7044] chdir("./166") = 0 [pid 7044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7044] setpgid(0, 0) = 0 [pid 7044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7044] write(3, "1000", 4) = 4 [pid 7044] close(3) = 0 [pid 7044] symlink("/dev/binderfs", "./binderfs") = 0 [ 179.274198][ T7039] NILFS (loop0): trying rollback from an earlier position [pid 7044] memfd_create("syzkaller", 0) = 3 [pid 7044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7040] <... write resumed>) = 2097152 [pid 7041] <... write resumed>) = 2097152 [ 179.324832][ T7039] NILFS (loop0): recovery complete [pid 7040] munmap(0x7f46b9f9b000, 2097152 [pid 7043] <... write resumed>) = 2097152 [pid 7041] munmap(0x7f46b9f9b000, 2097152 [pid 7043] munmap(0x7f46b9f9b000, 2097152 [pid 7041] <... munmap resumed>) = 0 [pid 7040] <... munmap resumed>) = 0 [pid 7039] <... mount resumed>) = 0 [pid 7043] <... munmap resumed>) = 0 [pid 7040] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7039] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7043] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7041] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7040] <... openat resumed>) = 4 [pid 7039] <... openat resumed>) = 3 [pid 7043] <... openat resumed>) = 4 [pid 7042] <... write resumed>) = 2097152 [pid 7041] <... openat resumed>) = 4 [pid 7040] ioctl(4, LOOP_SET_FD, 3 [pid 7039] chdir("./file0" [pid 7044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7043] ioctl(4, LOOP_SET_FD, 3 [pid 7042] munmap(0x7f46b9f9b000, 2097152 [pid 7041] ioctl(4, LOOP_SET_FD, 3 [pid 7039] <... chdir resumed>) = 0 [pid 7039] ioctl(4, LOOP_CLR_FD) = 0 [pid 7039] close(4) = 0 [pid 7039] creat("./bus", 000 [pid 7041] <... ioctl resumed>) = 0 [pid 7041] close(3) = 0 [pid 7041] mkdir("./file0", 0777 [pid 7042] <... munmap resumed>) = 0 [pid 7041] <... mkdir resumed>) = 0 [pid 7043] <... ioctl resumed>) = 0 [pid 7042] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7043] close(3 [pid 7042] <... openat resumed>) = 4 [pid 7041] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7040] <... ioctl resumed>) = 0 [pid 7043] <... close resumed>) = 0 [ 179.347137][ T7045] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.370588][ T7040] loop1: detected capacity change from 0 to 4096 [ 179.373157][ T7041] loop3: detected capacity change from 0 to 4096 [ 179.384376][ T7043] loop4: detected capacity change from 0 to 4096 [pid 7042] ioctl(4, LOOP_SET_FD, 3 [pid 7043] mkdir("./file0", 0777 [pid 7042] <... ioctl resumed>) = 0 [pid 7040] close(3 [pid 7039] <... creat resumed>) = 4 [pid 7043] <... mkdir resumed>) = 0 [pid 7042] close(3 [pid 7040] <... close resumed>) = 0 [pid 7039] unlink("./bus" [pid 7043] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7042] <... close resumed>) = 0 [pid 7040] mkdir("./file0", 0777 [pid 7039] <... unlink resumed>) = 0 [pid 7042] mkdir("./file0", 0777 [pid 7040] <... mkdir resumed>) = 0 [pid 7039] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7044] <... write resumed>) = 2097152 [pid 7042] <... mkdir resumed>) = 0 [pid 7040] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7039] <... pwritev2 resumed>) = 65007 [pid 7039] exit_group(0) = ? [pid 7044] munmap(0x7f46b9f9b000, 2097152 [pid 7042] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7044] <... munmap resumed>) = 0 [ 179.406279][ T7042] loop5: detected capacity change from 0 to 4096 [ 179.427595][ T7043] NILFS (loop4): invalid segment: Checksum error in segment payload [ 179.433248][ T7041] NILFS (loop3): invalid segment: Checksum error in segment payload [ 179.440405][ T7043] NILFS (loop4): trying rollback from an earlier position [pid 7044] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7039] +++ exited with 0 +++ [pid 7044] <... openat resumed>) = 4 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7039, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 7044] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7044] close(3 [pid 4993] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7044] <... close resumed>) = 0 [pid 7044] mkdir("./file0", 0777) = 0 [ 179.459479][ T7041] NILFS (loop3): trying rollback from an earlier position [ 179.463423][ T7040] NILFS (loop1): invalid segment: Checksum error in segment payload [ 179.476961][ T7044] loop2: detected capacity change from 0 to 4096 [ 179.482812][ T7040] NILFS (loop1): trying rollback from an earlier position [ 179.484490][ T7042] NILFS (loop5): invalid segment: Checksum error in segment payload [ 179.500423][ T7042] NILFS (loop5): trying rollback from an earlier position [pid 7044] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./169/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./169/binderfs") = 0 [ 179.508039][ T7041] NILFS (loop3): recovery complete [ 179.513625][ T7043] NILFS (loop4): recovery complete [ 179.517524][ T7042] NILFS (loop5): recovery complete [ 179.533230][ T7044] NILFS (loop2): invalid segment: Checksum error in segment payload [ 179.535500][ T7048] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7043] <... mount resumed>) = 0 [pid 7043] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7042] <... mount resumed>) = 0 [pid 7043] <... openat resumed>) = 3 [pid 7042] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7043] chdir("./file0") = 0 [pid 7042] <... openat resumed>) = 3 [pid 7041] <... mount resumed>) = 0 [pid 7041] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7043] ioctl(4, LOOP_CLR_FD [pid 7042] chdir("./file0" [pid 7043] <... ioctl resumed>) = 0 [pid 7042] <... chdir resumed>) = 0 [pid 7041] <... openat resumed>) = 3 [pid 7043] close(4 [pid 7042] ioctl(4, LOOP_CLR_FD [pid 7043] <... close resumed>) = 0 [pid 7041] chdir("./file0") = 0 [pid 7041] ioctl(4, LOOP_CLR_FD) = 0 [pid 7041] close(4) = 0 [ 179.541673][ T7046] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.552241][ T7040] NILFS (loop1): recovery complete [ 179.563329][ T7044] NILFS (loop2): trying rollback from an earlier position [ 179.568216][ T7047] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 179.581893][ T7044] NILFS (loop2): recovery complete [ 179.594416][ T7050] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7041] creat("./bus", 000 [pid 7042] <... ioctl resumed>) = 0 [pid 7044] <... mount resumed>) = 0 [pid 7043] creat("./bus", 000 [pid 7042] close(4 [pid 7040] <... mount resumed>) = 0 [pid 7044] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7042] <... close resumed>) = 0 [pid 7040] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7044] chdir("./file0" [pid 7042] creat("./bus", 000 [pid 7044] <... chdir resumed>) = 0 [pid 7044] ioctl(4, LOOP_CLR_FD [pid 7041] <... creat resumed>) = 4 [pid 7040] <... openat resumed>) = 3 [pid 7044] <... ioctl resumed>) = 0 [pid 7043] <... creat resumed>) = 4 [pid 7041] unlink("./bus" [pid 7040] chdir("./file0" [pid 7044] close(4 [pid 7043] unlink("./bus" [pid 7042] <... creat resumed>) = 4 [pid 7041] <... unlink resumed>) = 0 [pid 7040] <... chdir resumed>) = 0 [pid 7044] <... close resumed>) = 0 [pid 7042] unlink("./bus" [pid 7041] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7040] ioctl(4, LOOP_CLR_FD [pid 7044] creat("./bus", 000 [pid 7043] <... unlink resumed>) = 0 [pid 7042] <... unlink resumed>) = 0 [pid 7040] <... ioctl resumed>) = 0 [pid 7043] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7042] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7040] close(4) = 0 [pid 7040] creat("./bus", 000 [pid 7044] <... creat resumed>) = 4 [ 179.612061][ T7049] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7043] <... pwritev2 resumed>) = 65007 [pid 7042] <... pwritev2 resumed>) = 65007 [pid 7040] <... creat resumed>) = 4 [pid 7044] unlink("./bus" [pid 7043] exit_group(0 [pid 7042] exit_group(0 [pid 7044] <... unlink resumed>) = 0 [pid 7040] unlink("./bus" [pid 7044] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7043] <... exit_group resumed>) = ? [pid 7042] <... exit_group resumed>) = ? [pid 4993] <... umount2 resumed>) = 0 [pid 7041] <... pwritev2 resumed>) = 65007 [pid 7040] <... unlink resumed>) = 0 [pid 7041] exit_group(0) = ? [pid 7040] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./169/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./169/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./169") = 0 [pid 4993] mkdir("./170", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 7044] <... pwritev2 resumed>) = 65007 [pid 7043] +++ exited with 0 +++ [pid 7042] +++ exited with 0 +++ [pid 7041] +++ exited with 0 +++ [pid 7040] <... pwritev2 resumed>) = 65007 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7044] exit_group(0 [pid 7040] exit_group(0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7042, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7043, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7041, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7044] <... exit_group resumed>) = ? [pid 7040] <... exit_group resumed>) = ? [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7051 ./strace-static-x86_64: Process 7051 attached [pid 7051] chdir("./170") = 0 [pid 7051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7051] setpgid(0, 0) = 0 [pid 7051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7051] write(3, "1000", 4) = 4 [pid 7051] close(3) = 0 [pid 7051] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7051] memfd_create("syzkaller", 0) = 3 [pid 7051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7051] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(3, [pid 4997] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7051] <... write resumed>) = 2097152 [pid 7044] +++ exited with 0 +++ [pid 7040] +++ exited with 0 +++ [pid 4998] getdents64(3, [pid 4997] fstat(3, [pid 4996] fstat(3, [pid 7051] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7044, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7040, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 7051] <... munmap resumed>) = 0 [pid 4998] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 7051] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7051] <... openat resumed>) = 4 [pid 4998] lstat("./170/binderfs", [pid 4997] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7051] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] unlink("./170/binderfs" [pid 4997] lstat("./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./170/binderfs") = 0 [pid 4997] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./170/binderfs") = 0 [pid 4996] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7051] <... ioctl resumed>) = 0 [pid 7051] close(3 [pid 4998] <... unlink resumed>) = 0 [pid 4995] umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 4995] fstat(3, [pid 4994] fstat(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4994] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./166/binderfs", [pid 4994] lstat("./169/binderfs", [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./166/binderfs" [pid 4994] unlink("./169/binderfs" [pid 4995] <... unlink resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4995] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7051] <... close resumed>) = 0 [pid 7051] mkdir("./file0", 0777) = 0 [pid 7051] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... umount2 resumed>) = 0 [ 179.811920][ T7051] loop0: detected capacity change from 0 to 4096 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./170/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./170") = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4998] mkdir("./171", 0777) = 0 [pid 4997] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./169/file0", [pid 4997] lstat("./170/file0", [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [ 179.872050][ T7051] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] getdents64(4, [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./169/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./169" [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7052 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./170", 0777) = 0 [pid 4997] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 ./strace-static-x86_64: Process 7052 attached [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] <... openat resumed>) = 4 [pid 4996] lstat("./170/file0", [pid 7052] chdir("./171" [pid 4997] fstat(4, [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7052] <... chdir resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./166/file0", [pid 4994] close(3 [pid 7052] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... close resumed>) = 0 [pid 7052] <... prctl resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7052] setpgid(0, 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7052] <... setpgid resumed>) = 0 [pid 4997] getdents64(4, [pid 4996] <... openat resumed>) = 4 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7053 [pid 7052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] fstat(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7052] write(3, "1000", 4 [pid 4997] close(4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7052] <... write resumed>) = 4 [pid 4997] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 7052] close(3 [pid 4997] rmdir("./170/file0" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7052] <... close resumed>) = 0 [pid 7052] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... openat resumed>) = 4 [pid 7052] memfd_create("syzkaller", 0) = 3 [pid 7052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] fstat(4, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] close(3 [pid 4996] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 4997] <... close resumed>) = 0 [pid 4996] rmdir("./170/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] rmdir("./170" [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] getdents64(4, ./strace-static-x86_64: Process 7053 attached [pid 4997] mkdir("./171", 0777 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] close(3 [pid 4995] close(4 [pid 7053] chdir("./170" [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7053] <... chdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] rmdir("./170" [pid 4995] rmdir("./166/file0" [pid 7053] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 7053] <... prctl resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] mkdir("./171", 0777 [pid 4995] getdents64(3, [pid 4997] close(3 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7053] setpgid(0, 0 [pid 4997] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7053] <... setpgid resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./166" [pid 7053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7054 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] <... rmdir resumed>) = 0 [pid 7053] <... openat resumed>) = 3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] mkdir("./167", 0777 [ 179.938216][ T7051] NILFS (loop0): trying rollback from an earlier position [pid 7053] write(3, "1000", 4 [pid 7052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7053] <... write resumed>) = 4 [pid 4996] close(3 [pid 4995] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 7054 attached [pid 7053] close(3 [pid 7054] chdir("./171") = 0 [pid 7054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7054] setpgid(0, 0) = 0 [pid 7054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7054] write(3, "1000", 4) = 4 [pid 7054] close(3) = 0 [pid 7054] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7054] memfd_create("syzkaller", 0 [pid 7053] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7054] <... memfd_create resumed>) = 3 [pid 7053] symlink("/dev/binderfs", "./binderfs" [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 3 [pid 7054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7053] <... symlink resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 7053] memfd_create("syzkaller", 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7055 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) ./strace-static-x86_64: Process 7055 attached [pid 7053] <... memfd_create resumed>) = 3 [pid 4995] close(3 [pid 7053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... close resumed>) = 0 [pid 7053] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7055] chdir("./171") = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7057 [pid 7055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7055] setpgid(0, 0./strace-static-x86_64: Process 7057 attached [pid 7057] chdir("./167" [pid 7055] <... setpgid resumed>) = 0 [pid 7057] <... chdir resumed>) = 0 [pid 7055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7057] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7055] <... openat resumed>) = 3 [pid 7057] <... prctl resumed>) = 0 [pid 7055] write(3, "1000", 4 [pid 7054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7057] setpgid(0, 0 [pid 7055] <... write resumed>) = 4 [pid 7057] <... setpgid resumed>) = 0 [ 180.000289][ T7051] NILFS (loop0): recovery complete [pid 7057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7055] close(3 [pid 7051] <... mount resumed>) = 0 [pid 7057] <... openat resumed>) = 3 [pid 7051] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7057] write(3, "1000", 4 [pid 7051] <... openat resumed>) = 3 [pid 7057] <... write resumed>) = 4 [pid 7051] chdir("./file0" [pid 7057] close(3 [pid 7051] <... chdir resumed>) = 0 [pid 7057] <... close resumed>) = 0 [pid 7051] ioctl(4, LOOP_CLR_FD [pid 7057] symlink("/dev/binderfs", "./binderfs" [pid 7051] <... ioctl resumed>) = 0 [pid 7057] <... symlink resumed>) = 0 [pid 7051] close(4 [pid 7057] memfd_create("syzkaller", 0 [pid 7051] <... close resumed>) = 0 [pid 7057] <... memfd_create resumed>) = 3 [pid 7051] creat("./bus", 000 [pid 7057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7055] <... close resumed>) = 0 [pid 7053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7055] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7055] memfd_create("syzkaller", 0) = 3 [pid 7052] <... write resumed>) = 2097152 [pid 7055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7052] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7052] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7052] ioctl(4, LOOP_SET_FD, 3 [pid 7051] <... creat resumed>) = 4 [pid 7051] unlink("./bus") = 0 [pid 7051] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [ 180.055148][ T7056] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.092185][ T7052] loop5: detected capacity change from 0 to 4096 [pid 7057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7052] <... ioctl resumed>) = 0 [pid 7052] close(3) = 0 [pid 7052] mkdir("./file0", 0777) = 0 [pid 7051] <... pwritev2 resumed>) = 65007 [pid 7052] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7051] exit_group(0 [pid 7053] <... write resumed>) = 2097152 [pid 7051] <... exit_group resumed>) = ? [pid 7053] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7055] <... write resumed>) = 2097152 [pid 7055] munmap(0x7f46b9f9b000, 2097152 [pid 7053] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7055] <... munmap resumed>) = 0 [pid 7053] <... openat resumed>) = 4 [pid 7055] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7053] ioctl(4, LOOP_SET_FD, 3 [pid 7054] <... write resumed>) = 2097152 [pid 7054] munmap(0x7f46b9f9b000, 2097152 [pid 7051] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7051, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 7054] <... munmap resumed>) = 0 [pid 4993] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7053] <... ioctl resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7057] <... write resumed>) = 2097152 [pid 7055] <... openat resumed>) = 4 [pid 7054] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7053] close(3 [pid 4993] <... openat resumed>) = 3 [pid 7057] munmap(0x7f46b9f9b000, 2097152 [pid 7055] ioctl(4, LOOP_SET_FD, 3 [pid 7053] <... close resumed>) = 0 [pid 7057] <... munmap resumed>) = 0 [pid 7054] <... openat resumed>) = 4 [pid 4993] fstat(3, [pid 7054] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7057] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7055] <... ioctl resumed>) = 0 [pid 7053] mkdir("./file0", 0777 [pid 7057] <... openat resumed>) = 4 [pid 7055] close(3 [pid 7053] <... mkdir resumed>) = 0 [pid 7057] ioctl(4, LOOP_SET_FD, 3 [pid 7055] <... close resumed>) = 0 [pid 7053] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./170/binderfs") = 0 [pid 4993] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7054] <... ioctl resumed>) = 0 [pid 7054] close(3) = 0 [pid 7054] mkdir("./file0", 0777) = 0 [pid 7054] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7057] <... ioctl resumed>) = 0 [pid 7055] mkdir("./file0", 0777) = 0 [pid 7055] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7057] close(3) = 0 [pid 7057] mkdir("./file0", 0777) = 0 [ 180.164854][ T7053] loop1: detected capacity change from 0 to 4096 [ 180.171926][ T7052] NILFS (loop5): invalid segment: Checksum error in segment payload [ 180.180446][ T7052] NILFS (loop5): trying rollback from an earlier position [ 180.182241][ T7055] loop3: detected capacity change from 0 to 4096 [ 180.191928][ T7054] loop4: detected capacity change from 0 to 4096 [ 180.200284][ T7057] loop2: detected capacity change from 0 to 4096 [ 180.209517][ T7052] NILFS (loop5): recovery complete [ 180.220783][ T7055] NILFS (loop3): invalid segment: Checksum error in segment payload [ 180.229890][ T7053] NILFS (loop1): invalid segment: Checksum error in segment payload [ 180.230973][ T7055] NILFS (loop3): trying rollback from an earlier position [ 180.238424][ T7053] NILFS (loop1): trying rollback from an earlier position [ 180.250529][ T7057] NILFS (loop2): invalid segment: Checksum error in segment payload [ 180.261307][ T7054] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 7057] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7052] <... mount resumed>) = 0 [pid 7052] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7052] chdir("./file0") = 0 [pid 7052] ioctl(4, LOOP_CLR_FD) = 0 [pid 7052] close(4) = 0 [pid 7052] creat("./bus", 000) = 4 [pid 4993] <... umount2 resumed>) = 0 [pid 7052] unlink("./bus") = 0 [pid 7052] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 180.269527][ T7057] NILFS (loop2): trying rollback from an earlier position [ 180.279701][ T7058] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.297943][ T7054] NILFS (loop4): trying rollback from an earlier position [ 180.309269][ T7053] NILFS (loop1): recovery complete [pid 4993] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7053] <... mount resumed>) = 0 [pid 7052] <... pwritev2 resumed>) = 65007 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7053] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] close(4 [pid 7054] <... mount resumed>) = 0 [pid 7053] <... openat resumed>) = 3 [pid 7052] exit_group(0 [pid 7054] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7053] chdir("./file0" [pid 7052] <... exit_group resumed>) = ? [pid 4993] <... close resumed>) = 0 [pid 7054] <... openat resumed>) = 3 [pid 7053] <... chdir resumed>) = 0 [pid 4993] rmdir("./170/file0" [pid 7054] chdir("./file0" [pid 7053] ioctl(4, LOOP_CLR_FD [pid 7054] <... chdir resumed>) = 0 [pid 7053] <... ioctl resumed>) = 0 [pid 7054] ioctl(4, LOOP_CLR_FD [pid 7053] close(4 [pid 7054] <... ioctl resumed>) = 0 [pid 7053] <... close resumed>) = 0 [pid 7054] close(4 [pid 7053] creat("./bus", 000 [pid 7054] <... close resumed>) = 0 [pid 7053] <... creat resumed>) = 4 [pid 4993] <... rmdir resumed>) = 0 [pid 7054] creat("./bus", 000 [pid 7053] unlink("./bus" [pid 7054] <... creat resumed>) = 4 [pid 7053] <... unlink resumed>) = 0 [pid 4993] getdents64(3, [pid 7054] unlink("./bus" [pid 7053] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7054] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [ 180.331562][ T7059] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.342636][ T7054] NILFS (loop4): recovery complete [ 180.349155][ T7055] NILFS (loop3): recovery complete [ 180.349858][ T7060] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7054] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] close(3 [pid 7055] <... mount resumed>) = 0 [pid 7052] +++ exited with 0 +++ [pid 7055] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7054] <... pwritev2 resumed>) = 65007 [pid 4993] <... close resumed>) = 0 [pid 7055] chdir("./file0") = 0 [pid 7054] exit_group(0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7052, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4993] rmdir("./170" [pid 7055] ioctl(4, LOOP_CLR_FD) = 0 [pid 7054] <... exit_group resumed>) = ? [pid 7055] close(4) = 0 [pid 7053] <... pwritev2 resumed>) = 65007 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... rmdir resumed>) = 0 [pid 7055] creat("./bus", 000 [pid 7053] exit_group(0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4993] mkdir("./171", 0777 [pid 7054] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7054, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] <... mkdir resumed>) = 0 [pid 4998] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7055] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7055] unlink("./bus" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7055] <... unlink resumed>) = 0 [pid 4998] fstat(3, [pid 4997] fstat(3, [pid 7055] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] getdents64(3, [pid 7053] <... exit_group resumed>) = ? [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] close(3 [pid 4998] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 7057] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7057] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7053] +++ exited with 0 +++ [pid 4998] lstat("./171/binderfs", [pid 4997] lstat("./171/binderfs", [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 180.397692][ T7061] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 180.411283][ T7057] NILFS (loop2): recovery complete [ 180.437050][ T7062] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7063 [pid 4998] unlink("./171/binderfs" [pid 4997] unlink("./171/binderfs" [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7053, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4994] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7057] <... openat resumed>) = 3 [pid 4998] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 7063 attached [pid 7057] chdir("./file0" [pid 7063] chdir("./171" [pid 7057] <... chdir resumed>) = 0 [pid 7063] <... chdir resumed>) = 0 [pid 7057] ioctl(4, LOOP_CLR_FD [pid 4994] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7057] <... ioctl resumed>) = 0 [pid 7063] <... prctl resumed>) = 0 [pid 7057] close(4 [pid 7063] setpgid(0, 0 [pid 7057] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7063] <... setpgid resumed>) = 0 [pid 7057] creat("./bus", 000 [pid 7063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7063] write(3, "1000", 4) = 4 [pid 7063] close(3) = 0 [pid 7063] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7063] memfd_create("syzkaller", 0) = 3 [pid 7063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7055] <... pwritev2 resumed>) = 65007 [pid 7057] <... creat resumed>) = 4 [pid 4994] getdents64(3, [pid 7057] unlink("./bus" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./170/binderfs", [pid 7057] <... unlink resumed>) = 0 [pid 7055] exit_group(0 [pid 4998] <... umount2 resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7057] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7055] <... exit_group resumed>) = ? [pid 4998] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] unlink("./170/binderfs" [pid 7055] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4998] lstat("./171/file0", [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7055, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7057] <... pwritev2 resumed>) = 65007 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7057] exit_group(0 [pid 4998] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7057] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] lstat("./171/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] getdents64(4, [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7057] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... openat resumed>) = 3 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7057, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] fstat(3, [pid 4998] getdents64(4, [pid 4997] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(4 [pid 4997] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] rmdir("./171/file0" [pid 4997] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] fstat(4, [pid 4996] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(4, [pid 4995] fstat(3, [pid 4996] lstat("./171/binderfs", [pid 4998] getdents64(3, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] getdents64(4, [pid 4996] unlink("./171/binderfs" [pid 4998] close(3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4995] getdents64(3, [pid 4994] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4997] close(4 [pid 4996] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./171/file0" [pid 4998] rmdir("./171" [pid 4995] umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... rmdir resumed>) = 0 [pid 4995] lstat("./167/binderfs", [pid 4998] mkdir("./172", 0777 [pid 4997] getdents64(3, [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] unlink("./167/binderfs" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] close(3 [pid 4995] <... unlink resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] rmdir("./171" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./170/file0", [pid 7063] <... write resumed>) = 2097152 [pid 7063] munmap(0x7f46b9f9b000, 2097152 [pid 4997] <... rmdir resumed>) = 0 [pid 4997] mkdir("./172", 0777 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... mkdir resumed>) = 0 [pid 4998] close(3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7063] <... munmap resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7064 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... openat resumed>) = 4 [pid 4997] close(3 [pid 4994] fstat(4, [pid 4997] <... close resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7065 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./170/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./170") = 0 [pid 4994] mkdir("./171", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7066 [pid 7063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7063] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7066 attached [pid 7066] chdir("./171") = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 7066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 7065 attached ./strace-static-x86_64: Process 7064 attached [pid 7066] setpgid(0, 0 [pid 7063] <... ioctl resumed>) = 0 [pid 4996] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 7066] <... setpgid resumed>) = 0 [pid 7065] chdir("./172" [pid 7064] chdir("./172" [pid 7063] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7065] <... chdir resumed>) = 0 [pid 7064] <... chdir resumed>) = 0 [pid 7063] <... close resumed>) = 0 [pid 4996] lstat("./171/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7064] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7063] mkdir("./file0", 0777 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./167/file0", [pid 7066] <... openat resumed>) = 3 [pid 7065] <... prctl resumed>) = 0 [pid 7064] <... prctl resumed>) = 0 [pid 7063] <... mkdir resumed>) = 0 [pid 4996] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7066] write(3, "1000", 4 [pid 7065] setpgid(0, 0 [pid 7064] setpgid(0, 0 [pid 7063] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7066] <... write resumed>) = 4 [pid 7065] <... setpgid resumed>) = 0 [pid 7064] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7066] close(3 [pid 7065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... openat resumed>) = 4 [ 180.630200][ T7063] loop0: detected capacity change from 0 to 4096 [pid 4995] openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7066] <... close resumed>) = 0 [pid 7065] <... openat resumed>) = 3 [pid 7064] <... openat resumed>) = 3 [pid 7066] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7066] memfd_create("syzkaller", 0) = 3 [pid 7066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7065] write(3, "1000", 4 [pid 4996] fstat(4, [pid 4995] <... openat resumed>) = 4 [pid 7066] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7065] <... write resumed>) = 4 [pid 7064] write(3, "1000", 4 [pid 7065] close(3 [pid 7064] <... write resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 7065] <... close resumed>) = 0 [pid 7064] close(3 [pid 4996] getdents64(4, [pid 7065] symlink("/dev/binderfs", "./binderfs" [pid 7064] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7065] <... symlink resumed>) = 0 [pid 7064] symlink("/dev/binderfs", "./binderfs" [pid 4996] getdents64(4, [pid 4995] getdents64(4, [pid 7065] memfd_create("syzkaller", 0 [pid 7064] <... symlink resumed>) = 0 [pid 7064] memfd_create("syzkaller", 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7065] <... memfd_create resumed>) = 3 [pid 7064] <... memfd_create resumed>) = 3 [pid 4996] close(4 [pid 4995] getdents64(4, [pid 7065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7065] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7064] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] rmdir("./171/file0" [pid 4995] close(4 [pid 7063] <... mount resumed>) = 0 [pid 7063] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7063] chdir("./file0") = 0 [pid 7063] ioctl(4, LOOP_CLR_FD) = 0 [pid 7063] close(4) = 0 [ 180.677128][ T7063] NILFS (loop0): invalid segment: Checksum error in segment payload [ 180.693416][ T7063] NILFS (loop0): trying rollback from an earlier position [ 180.710142][ T7063] NILFS (loop0): recovery complete [pid 7063] creat("./bus", 000 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] rmdir("./167/file0" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4995] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./171" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4995] close(3 [pid 4996] mkdir("./172", 0777 [pid 4995] <... close resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] rmdir("./167" [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] mkdir("./168", 0777 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 4995] <... mkdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7068 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 7066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... close resumed>) = 0 [pid 7063] <... creat resumed>) = 4 [pid 7063] unlink("./bus" [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7069 ./strace-static-x86_64: Process 7069 attached [pid 7069] chdir("./168") = 0 [pid 7069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7063] <... unlink resumed>) = 0 [pid 7069] setpgid(0, 0 [pid 7063] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7068 attached [pid 7069] <... setpgid resumed>) = 0 [ 180.738757][ T7067] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7065] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7068] chdir("./172") = 0 [pid 7069] <... openat resumed>) = 3 [pid 7068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7069] write(3, "1000", 4 [pid 7068] <... prctl resumed>) = 0 [pid 7069] <... write resumed>) = 4 [pid 7068] setpgid(0, 0 [pid 7069] close(3 [pid 7068] <... setpgid resumed>) = 0 [pid 7069] <... close resumed>) = 0 [pid 7068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7069] symlink("/dev/binderfs", "./binderfs" [pid 7068] <... openat resumed>) = 3 [pid 7069] <... symlink resumed>) = 0 [pid 7068] write(3, "1000", 4 [pid 7069] memfd_create("syzkaller", 0 [pid 7068] <... write resumed>) = 4 [pid 7063] <... pwritev2 resumed>) = 65007 [pid 7069] <... memfd_create resumed>) = 3 [pid 7068] close(3 [pid 7063] exit_group(0 [pid 7069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7068] <... close resumed>) = 0 [pid 7063] <... exit_group resumed>) = ? [pid 7069] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7068] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7068] memfd_create("syzkaller", 0) = 3 [pid 7068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7063] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7063, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7064] <... write resumed>) = 2097152 [pid 4993] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./171/binderfs" [pid 7066] <... write resumed>) = 2097152 [pid 4993] <... unlink resumed>) = 0 [pid 7066] munmap(0x7f46b9f9b000, 2097152 [pid 4993] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7069] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7066] <... munmap resumed>) = 0 [pid 7066] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7066] ioctl(4, LOOP_SET_FD, 3 [pid 7065] <... write resumed>) = 2097152 [pid 7065] munmap(0x7f46b9f9b000, 2097152 [pid 7066] <... ioctl resumed>) = 0 [pid 7065] <... munmap resumed>) = 0 [pid 7064] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 7066] close(3 [pid 7065] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7064] <... munmap resumed>) = 0 [pid 7066] <... close resumed>) = 0 [pid 7065] <... openat resumed>) = 4 [pid 4993] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7066] mkdir("./file0", 0777 [pid 7065] ioctl(4, LOOP_SET_FD, 3 [pid 7064] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7069] <... write resumed>) = 2097152 [pid 7066] <... mkdir resumed>) = 0 [pid 7065] <... ioctl resumed>) = 0 [pid 7064] <... openat resumed>) = 4 [pid 4993] lstat("./171/file0", [pid 7069] munmap(0x7f46b9f9b000, 2097152 [pid 7066] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7064] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7069] <... munmap resumed>) = 0 [pid 7064] <... ioctl resumed>) = 0 [ 180.873257][ T7066] loop1: detected capacity change from 0 to 4096 [ 180.906518][ T7065] loop4: detected capacity change from 0 to 4096 [ 180.917351][ T7064] loop5: detected capacity change from 0 to 4096 [pid 4993] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7065] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7069] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7065] <... close resumed>) = 0 [pid 7065] mkdir("./file0", 0777) = 0 [pid 7065] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7069] <... openat resumed>) = 4 [pid 7064] close(3 [pid 4993] <... openat resumed>) = 4 [pid 7068] <... write resumed>) = 2097152 [pid 7068] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7069] ioctl(4, LOOP_SET_FD, 3 [pid 7064] <... close resumed>) = 0 [pid 4993] fstat(4, [pid 7068] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7068] ioctl(4, LOOP_SET_FD, 3 [pid 7069] <... ioctl resumed>) = 0 [pid 7064] mkdir("./file0", 0777 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7068] <... ioctl resumed>) = 0 [pid 7068] close(3) = 0 [pid 7068] mkdir("./file0", 0777 [pid 7069] close(3 [pid 7064] <... mkdir resumed>) = 0 [pid 7069] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 7069] mkdir("./file0", 0777 [pid 7064] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7069] <... mkdir resumed>) = 0 [pid 4993] getdents64(4, [pid 7069] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7068] <... mkdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7068] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 180.929335][ T7066] NILFS (loop1): invalid segment: Checksum error in segment payload [ 180.938116][ T7066] NILFS (loop1): trying rollback from an earlier position [ 180.950546][ T7069] loop2: detected capacity change from 0 to 4096 [ 180.954945][ T7068] loop3: detected capacity change from 0 to 4096 [ 180.963666][ T7065] NILFS (loop4): invalid segment: Checksum error in segment payload [ 180.964247][ T7066] NILFS (loop1): recovery complete [pid 4993] close(4) = 0 [pid 4993] rmdir("./171/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 180.987322][ T7065] NILFS (loop4): trying rollback from an earlier position [ 180.991132][ T7064] NILFS (loop5): invalid segment: Checksum error in segment payload [ 181.005652][ T7069] NILFS (loop2): invalid segment: Checksum error in segment payload [ 181.011307][ T7068] NILFS (loop3): invalid segment: Checksum error in segment payload [ 181.014023][ T7069] NILFS (loop2): trying rollback from an earlier position [ 181.029426][ T7064] NILFS (loop5): trying rollback from an earlier position [pid 4993] close(3 [pid 7066] <... mount resumed>) = 0 [pid 7066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7066] chdir("./file0") = 0 [pid 7066] ioctl(4, LOOP_CLR_FD) = 0 [pid 7066] close(4) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./171" [pid 7066] creat("./bus", 000 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./172", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7071 [ 181.029628][ T7070] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.043378][ T7068] NILFS (loop3): trying rollback from an earlier position [ 181.071134][ T7064] NILFS (loop5): recovery complete [ 181.071136][ T7065] NILFS (loop4): recovery complete [ 181.076388][ T7069] NILFS (loop2): recovery complete ./strace-static-x86_64: Process 7071 attached [pid 7071] chdir("./172") = 0 [pid 7065] <... mount resumed>) = 0 [pid 7065] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7065] chdir("./file0") = 0 [pid 7065] ioctl(4, LOOP_CLR_FD [pid 7071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7066] <... creat resumed>) = 4 [pid 7065] <... ioctl resumed>) = 0 [pid 7071] <... prctl resumed>) = 0 [pid 7065] close(4 [pid 7071] setpgid(0, 0 [pid 7065] <... close resumed>) = 0 [pid 7071] <... setpgid resumed>) = 0 [pid 7065] creat("./bus", 000 [pid 7071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7071] write(3, "1000", 4) = 4 [pid 7071] close(3) = 0 [pid 7071] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7071] memfd_create("syzkaller", 0 [pid 7066] unlink("./bus" [pid 7071] <... memfd_create resumed>) = 3 [pid 7071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7066] <... unlink resumed>) = 0 [pid 7064] <... mount resumed>) = 0 [pid 7068] <... mount resumed>) = 0 [pid 7066] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7064] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7064] <... openat resumed>) = 3 [pid 7064] chdir("./file0" [pid 7068] <... openat resumed>) = 3 [pid 7064] <... chdir resumed>) = 0 [pid 7068] chdir("./file0" [pid 7064] ioctl(4, LOOP_CLR_FD [pid 7068] <... chdir resumed>) = 0 [pid 7064] <... ioctl resumed>) = 0 [ 181.087140][ T7068] NILFS (loop3): recovery complete [ 181.096262][ T7072] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.107204][ T7074] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.118500][ T7073] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7068] ioctl(4, LOOP_CLR_FD [pid 7066] <... pwritev2 resumed>) = 65007 [pid 7064] close(4 [pid 7069] <... mount resumed>) = 0 [pid 7068] <... ioctl resumed>) = 0 [pid 7066] exit_group(0 [pid 7064] <... close resumed>) = 0 [pid 7069] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7068] close(4 [pid 7066] <... exit_group resumed>) = ? [pid 7064] creat("./bus", 000 [pid 7069] <... openat resumed>) = 3 [pid 7068] <... close resumed>) = 0 [pid 7069] chdir("./file0") = 0 [pid 7069] ioctl(4, LOOP_CLR_FD [pid 7068] creat("./bus", 000 [pid 7066] +++ exited with 0 +++ [pid 7069] <... ioctl resumed>) = 0 [pid 7065] <... creat resumed>) = 4 [pid 7069] close(4 [pid 7065] unlink("./bus" [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7066, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 7069] <... close resumed>) = 0 [pid 7065] <... unlink resumed>) = 0 [pid 7064] <... creat resumed>) = 4 [pid 7068] <... creat resumed>) = 4 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7069] creat("./bus", 000 [pid 7068] unlink("./bus" [pid 7065] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7064] unlink("./bus" [pid 4994] <... restart_syscall resumed>) = 0 [pid 7071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7068] <... unlink resumed>) = 0 [pid 7064] <... unlink resumed>) = 0 [pid 7068] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7064] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 181.141606][ T7075] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./171/binderfs") = 0 [pid 4994] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7068] <... pwritev2 resumed>) = 65007 [pid 7065] <... pwritev2 resumed>) = 65007 [pid 7068] exit_group(0 [pid 7065] exit_group(0 [pid 7064] <... pwritev2 resumed>) = 65007 [pid 7068] <... exit_group resumed>) = ? [pid 7065] <... exit_group resumed>) = ? [pid 7064] exit_group(0 [pid 4994] <... umount2 resumed>) = 0 [pid 7064] <... exit_group resumed>) = ? [pid 7068] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7068, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 4996] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7069] <... creat resumed>) = 4 [pid 4996] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7069] unlink("./bus" [pid 4996] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7069] <... unlink resumed>) = 0 [pid 7065] +++ exited with 0 +++ [pid 7064] +++ exited with 0 +++ [pid 4996] fstat(3, [pid 4994] lstat("./171/file0", [pid 7071] <... write resumed>) = 2097152 [pid 7069] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7064, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7065, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4996] getdents64(3, [pid 4994] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... restart_syscall resumed>) = 0 [pid 4996] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7069] <... pwritev2 resumed>) = 65007 [pid 4998] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 7069] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 4996] lstat("./172/binderfs", [pid 4994] fstat(4, [pid 7069] <... exit_group resumed>) = ? [pid 4998] fstat(3, [pid 4997] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] unlink("./172/binderfs" [pid 4994] getdents64(4, [pid 4998] getdents64(3, [pid 4997] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7071] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... openat resumed>) = 3 [pid 4996] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, [pid 7071] <... munmap resumed>) = 0 [pid 4998] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(4 [pid 7071] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] lstat("./172/binderfs", [pid 4997] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 7071] <... openat resumed>) = 4 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] rmdir("./171/file0" [pid 7071] ioctl(4, LOOP_SET_FD, 3 [pid 4998] unlink("./172/binderfs" [pid 4997] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 7071] <... ioctl resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 4998] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] lstat("./172/binderfs", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] lstat("./172/file0", [pid 4994] close(3 [pid 4997] unlink("./172/binderfs" [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 7069] +++ exited with 0 +++ [pid 4997] <... unlink resumed>) = 0 [pid 4996] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./171" [pid 4997] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7069, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./172", 0777 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... openat resumed>) = 4 [pid 4994] <... openat resumed>) = 3 [pid 4996] fstat(4, [pid 4995] umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] getdents64(4, [pid 4995] openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... openat resumed>) = 3 [pid 4994] <... close resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] fstat(3, [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(4 [pid 4995] getdents64(3, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7076 [pid 4996] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] rmdir("./172/file0" [pid 4995] umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./168/binderfs", [pid 4996] <... rmdir resumed>) = 0 [pid 7071] close(3 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7071] <... close resumed>) = 0 [pid 4995] unlink("./168/binderfs" [pid 7071] mkdir("./file0", 0777 [pid 4996] getdents64(3, [pid 7071] <... mkdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4996] close(3 [pid 4995] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7071] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... close resumed>) = 0 ./strace-static-x86_64: Process 7076 attached [pid 7076] chdir("./172") = 0 [pid 7076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7076] setpgid(0, 0) = 0 [pid 7076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7076] write(3, "1000", 4) = 4 [pid 7076] close(3) = 0 [pid 7076] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7076] memfd_create("syzkaller", 0 [pid 4996] rmdir("./172" [pid 7076] <... memfd_create resumed>) = 3 [pid 7076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7076] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] mkdir("./173", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [ 181.316825][ T7071] loop0: detected capacity change from 0 to 4096 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7077 ./strace-static-x86_64: Process 7077 attached [pid 7077] chdir("./173") = 0 [pid 7077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7077] setpgid(0, 0) = 0 [pid 7077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7077] write(3, "1000", 4) = 4 [pid 7077] close(3) = 0 [pid 7076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7077] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7077] memfd_create("syzkaller", 0) = 3 [pid 7077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = 0 [pid 4995] <... umount2 resumed>) = 0 [ 181.377320][ T7071] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4998] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] lstat("./172/file0", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] lstat("./172/file0", [pid 4995] lstat("./168/file0", [pid 4998] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... openat resumed>) = 4 [pid 4997] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(4, [pid 4997] <... openat resumed>) = 4 [pid 4995] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] fstat(4, [pid 4995] fstat(4, [pid 4998] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4995] getdents64(4, [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] close(4 [pid 4997] getdents64(4, [pid 4995] getdents64(4, [pid 4998] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./172/file0" [pid 4997] close(4 [pid 4995] close(4 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] rmdir("./172/file0" [pid 4995] rmdir("./168/file0" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] close(3 [pid 4997] getdents64(3, [pid 4995] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] rmdir("./172" [pid 4997] close(3 [pid 4995] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4998] mkdir("./173", 0777 [pid 4997] rmdir("./172" [pid 4995] <... close resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] rmdir("./168" [pid 4998] <... mkdir resumed>) = 0 [pid 4997] mkdir("./173", 0777 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] <... rmdir resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] mkdir("./169", 0777 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] <... mkdir resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4998] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... openat resumed>) = 3 [ 181.425653][ T7071] NILFS (loop0): trying rollback from an earlier position [pid 7077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] close(3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7078 [pid 4997] <... close resumed>) = 0 [pid 4995] close(3 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7079 ./strace-static-x86_64: Process 7079 attached ./strace-static-x86_64: Process 7078 attached [pid 7079] chdir("./173" [pid 7078] chdir("./173" [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7080 [pid 7079] <... chdir resumed>) = 0 [pid 7078] <... chdir resumed>) = 0 [pid 7079] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7078] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 7080 attached [pid 7079] <... prctl resumed>) = 0 [pid 7078] <... prctl resumed>) = 0 [pid 7080] chdir("./169") = 0 [pid 7080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7080] setpgid(0, 0) = 0 [pid 7080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7080] write(3, "1000", 4) = 4 [pid 7080] close(3) = 0 [pid 7080] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7080] memfd_create("syzkaller", 0) = 3 [pid 7080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7079] setpgid(0, 0 [pid 7078] setpgid(0, 0 [pid 7079] <... setpgid resumed>) = 0 [pid 7078] <... setpgid resumed>) = 0 [pid 7079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7079] <... openat resumed>) = 3 [pid 7078] <... openat resumed>) = 3 [pid 7079] write(3, "1000", 4 [pid 7078] write(3, "1000", 4 [pid 7079] <... write resumed>) = 4 [pid 7078] <... write resumed>) = 4 [pid 7079] close(3 [pid 7078] close(3 [pid 7076] <... write resumed>) = 2097152 [pid 7079] <... close resumed>) = 0 [pid 7078] <... close resumed>) = 0 [pid 7076] munmap(0x7f46b9f9b000, 2097152 [pid 7079] symlink("/dev/binderfs", "./binderfs" [pid 7078] symlink("/dev/binderfs", "./binderfs" [pid 7076] <... munmap resumed>) = 0 [pid 7076] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7079] <... symlink resumed>) = 0 [pid 7076] ioctl(4, LOOP_SET_FD, 3 [pid 7078] <... symlink resumed>) = 0 [ 181.514681][ T7071] NILFS (loop0): recovery complete [pid 7079] memfd_create("syzkaller", 0 [pid 7078] memfd_create("syzkaller", 0 [pid 7079] <... memfd_create resumed>) = 3 [pid 7078] <... memfd_create resumed>) = 3 [pid 7080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7077] <... write resumed>) = 2097152 [pid 7076] <... ioctl resumed>) = 0 [pid 7071] <... mount resumed>) = 0 [pid 7079] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7078] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7071] <... openat resumed>) = 3 [pid 7071] chdir("./file0") = 0 [pid 7071] ioctl(4, LOOP_CLR_FD) = 0 [pid 7071] close(4) = 0 [pid 7071] creat("./bus", 000) = 4 [pid 7071] unlink("./bus") = 0 [pid 7071] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7077] munmap(0x7f46b9f9b000, 2097152 [pid 7076] close(3) = 0 [ 181.548207][ T7076] loop1: detected capacity change from 0 to 4096 [ 181.556662][ T7081] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7077] <... munmap resumed>) = 0 [pid 7076] mkdir("./file0", 0777 [pid 7078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7077] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7076] <... mkdir resumed>) = 0 [pid 7077] ioctl(4, LOOP_SET_FD, 3 [pid 7076] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7071] <... pwritev2 resumed>) = 65007 [pid 7071] exit_group(0) = ? [pid 7080] <... write resumed>) = 2097152 [pid 7080] munmap(0x7f46b9f9b000, 2097152 [pid 7071] +++ exited with 0 +++ [pid 7077] <... ioctl resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7071, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 7077] close(3 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7077] <... close resumed>) = 0 [pid 4993] <... restart_syscall resumed>) = 0 [pid 7077] mkdir("./file0", 0777 [pid 4993] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7080] <... munmap resumed>) = 0 [pid 7077] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7080] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7077] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7080] <... openat resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [ 181.614777][ T7077] loop3: detected capacity change from 0 to 4096 [ 181.627810][ T7076] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7080] ioctl(4, LOOP_SET_FD, 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./172/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./172/binderfs") = 0 [pid 4993] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7080] <... ioctl resumed>) = 0 [pid 7080] close(3) = 0 [pid 7080] mkdir("./file0", 0777) = 0 [pid 7080] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7079] <... write resumed>) = 2097152 [pid 7079] munmap(0x7f46b9f9b000, 2097152 [pid 7078] <... write resumed>) = 2097152 [pid 7078] munmap(0x7f46b9f9b000, 2097152 [pid 7079] <... munmap resumed>) = 0 [pid 7078] <... munmap resumed>) = 0 [pid 7079] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7079] <... openat resumed>) = 4 [pid 7078] <... openat resumed>) = 4 [ 181.655289][ T7080] loop2: detected capacity change from 0 to 4096 [ 181.665505][ T7077] NILFS (loop3): invalid segment: Checksum error in segment payload [ 181.673638][ T7076] NILFS (loop1): trying rollback from an earlier position [ 181.681432][ T7077] NILFS (loop3): trying rollback from an earlier position [pid 7079] ioctl(4, LOOP_SET_FD, 3 [pid 7078] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./172/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 7079] <... ioctl resumed>) = 0 [pid 7078] <... ioctl resumed>) = 0 [pid 7079] close(3 [pid 7078] close(3 [pid 7079] <... close resumed>) = 0 [pid 7078] <... close resumed>) = 0 [pid 7079] mkdir("./file0", 0777 [pid 7078] mkdir("./file0", 0777 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./172/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./172") = 0 [pid 4993] mkdir("./173", 0777) = 0 [pid 7078] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7079] <... mkdir resumed>) = 0 [pid 7079] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7078] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7076] <... mount resumed>) = 0 [ 181.709546][ T7080] NILFS (loop2): invalid segment: Checksum error in segment payload [ 181.716421][ T7076] NILFS (loop1): recovery complete [ 181.722909][ T7079] loop4: detected capacity change from 0 to 4096 [ 181.729503][ T7078] loop5: detected capacity change from 0 to 4096 [ 181.738422][ T7077] NILFS (loop3): recovery complete [ 181.746979][ T7082] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7076] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 7077] <... mount resumed>) = 0 [pid 7076] <... openat resumed>) = 3 [pid 7076] chdir("./file0" [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7076] <... chdir resumed>) = 0 [pid 7076] ioctl(4, LOOP_CLR_FD [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7076] <... ioctl resumed>) = 0 [pid 7076] close(4 [pid 4993] close(3 [pid 7077] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7076] <... close resumed>) = 0 [pid 7076] creat("./bus", 000 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7077] <... openat resumed>) = 3 [pid 7077] chdir("./file0" [pid 7076] <... creat resumed>) = 4 [pid 7077] <... chdir resumed>) = 0 [pid 7076] unlink("./bus" [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7084 [pid 7077] ioctl(4, LOOP_CLR_FD [pid 7076] <... unlink resumed>) = 0 [ 181.760058][ T7080] NILFS (loop2): trying rollback from an earlier position [ 181.761271][ T7083] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.780132][ T7079] NILFS (loop4): invalid segment: Checksum error in segment payload [ 181.780844][ T7078] NILFS (loop5): invalid segment: Checksum error in segment payload [ 181.798356][ T7080] NILFS (loop2): recovery complete [pid 7077] <... ioctl resumed>) = 0 [pid 7076] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7080] <... mount resumed>) = 0 [pid 7077] close(4./strace-static-x86_64: Process 7084 attached [pid 7084] chdir("./173") = 0 [pid 7080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7077] <... close resumed>) = 0 [pid 7076] <... pwritev2 resumed>) = 65007 [pid 7084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7076] exit_group(0 [pid 7084] <... prctl resumed>) = 0 [pid 7076] <... exit_group resumed>) = ? [pid 7084] setpgid(0, 0 [pid 7080] <... openat resumed>) = 3 [pid 7077] creat("./bus", 000 [pid 7084] <... setpgid resumed>) = 0 [pid 7080] chdir("./file0" [pid 7084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7080] <... chdir resumed>) = 0 [pid 7077] <... creat resumed>) = 4 [pid 7084] <... openat resumed>) = 3 [pid 7084] write(3, "1000", 4) = 4 [pid 7084] close(3) = 0 [pid 7084] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7080] ioctl(4, LOOP_CLR_FD [pid 7077] unlink("./bus" [pid 7084] memfd_create("syzkaller", 0) = 3 [pid 7084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7080] <... ioctl resumed>) = 0 [pid 7077] <... unlink resumed>) = 0 [pid 7080] close(4 [pid 7077] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7076] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7076, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [ 181.818866][ T7085] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 181.827541][ T7079] NILFS (loop4): trying rollback from an earlier position [ 181.830886][ T7078] NILFS (loop5): trying rollback from an earlier position [ 181.855686][ T7078] NILFS (loop5): recovery complete [pid 7080] <... close resumed>) = 0 [pid 7078] <... mount resumed>) = 0 [pid 4994] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7080] creat("./bus", 000 [pid 7078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7078] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 7080] <... creat resumed>) = 4 [pid 7078] chdir("./file0" [pid 4994] fstat(3, [pid 7080] unlink("./bus" [pid 7078] <... chdir resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7078] ioctl(4, LOOP_CLR_FD [pid 7080] <... unlink resumed>) = 0 [pid 4994] getdents64(3, [pid 7080] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7078] <... ioctl resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7078] close(4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7078] <... close resumed>) = 0 [pid 4994] lstat("./172/binderfs", [pid 7078] creat("./bus", 000 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./172/binderfs") = 0 [pid 4994] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7077] <... pwritev2 resumed>) = 65007 [ 181.882985][ T7086] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7077] exit_group(0) = ? [pid 7080] <... pwritev2 resumed>) = 65007 [pid 7078] <... creat resumed>) = 4 [pid 7078] unlink("./bus") = 0 [pid 7080] exit_group(0 [pid 7078] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7080] <... exit_group resumed>) = ? [pid 4994] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 181.934538][ T7079] NILFS (loop4): recovery complete [pid 4994] lstat("./172/file0", [pid 7080] +++ exited with 0 +++ [pid 7079] <... mount resumed>) = 0 [pid 7077] +++ exited with 0 +++ [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7079] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7078] <... pwritev2 resumed>) = 65007 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7080, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 7079] <... openat resumed>) = 3 [pid 7078] exit_group(0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7077, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4994] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7079] chdir("./file0" [pid 7078] <... exit_group resumed>) = ? [pid 4996] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... restart_syscall resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7084] <... write resumed>) = 2097152 [pid 7079] <... chdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7079] ioctl(4, LOOP_CLR_FD [pid 4996] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 4 [pid 7079] <... ioctl resumed>) = 0 [pid 7078] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [pid 4995] umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(4, [pid 7079] close(4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7078, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4996] fstat(3, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7079] <... close resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(4, [pid 7079] creat("./bus", 000 [pid 4996] getdents64(3, [pid 4995] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] fstat(3, [pid 4994] getdents64(4, [pid 4996] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(3, [pid 4994] close(4 [pid 7084] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./173/binderfs", [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... close resumed>) = 0 [pid 7084] <... munmap resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./172/file0" [pid 4998] <... openat resumed>) = 3 [pid 4996] unlink("./173/binderfs" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... rmdir resumed>) = 0 [pid 7084] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] fstat(3, [pid 4996] <... unlink resumed>) = 0 [pid 4995] lstat("./169/binderfs", [pid 4994] getdents64(3, [pid 7084] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [ 181.972022][ T7087] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7084] ioctl(4, LOOP_SET_FD, 3 [pid 4998] getdents64(3, [pid 4995] unlink("./169/binderfs" [pid 4994] close(3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... unlink resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4998] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./172" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... rmdir resumed>) = 0 [pid 4998] lstat("./173/binderfs", [pid 4994] mkdir("./173", 0777 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4998] unlink("./173/binderfs" [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4998] <... unlink resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4998] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7079] <... creat resumed>) = 4 [pid 4995] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(3 [pid 7079] unlink("./bus" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4995] lstat("./169/file0", [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7079] <... unlink resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7079] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7088 [pid 4995] umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7088 attached ) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7088] chdir("./173" [pid 7084] <... ioctl resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 7088] <... chdir resumed>) = 0 [pid 7084] close(3 [pid 4995] fstat(4, [pid 7088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7084] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7088] <... prctl resumed>) = 0 [pid 7084] mkdir("./file0", 0777 [pid 4995] getdents64(4, [pid 7088] setpgid(0, 0 [pid 7084] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7088] <... setpgid resumed>) = 0 [pid 7084] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 182.028057][ T7084] loop0: detected capacity change from 0 to 4096 [pid 4995] getdents64(4, [pid 7088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7079] <... pwritev2 resumed>) = 65007 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7088] <... openat resumed>) = 3 [pid 7088] write(3, "1000", 4) = 4 [pid 7088] close(3) = 0 [pid 7088] symlink("/dev/binderfs", "./binderfs" [pid 7079] exit_group(0 [pid 4995] close(4 [pid 7088] <... symlink resumed>) = 0 [pid 7079] <... exit_group resumed>) = ? [pid 4995] <... close resumed>) = 0 [pid 7088] memfd_create("syzkaller", 0 [pid 4995] rmdir("./169/file0" [pid 7088] <... memfd_create resumed>) = 3 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 7088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] getdents64(3, [pid 4998] <... umount2 resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./169" [pid 4996] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] <... rmdir resumed>) = 0 [pid 4996] lstat("./173/file0", [pid 4995] mkdir("./170", 0777 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... mkdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, [pid 7088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(4, [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] lstat("./173/file0", [pid 4996] getdents64(4, [pid 4995] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(4 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./173/file0" [pid 4998] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7089 [pid 4998] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] close(3 [pid 4998] fstat(4, [pid 4996] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] rmdir("./173" [pid 4998] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 7079] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] mkdir("./174", 0777./strace-static-x86_64: Process 7089 attached [pid 4998] getdents64(4, [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7079, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] <... mkdir resumed>) = 0 [pid 7089] chdir("./170" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7089] <... chdir resumed>) = 0 [pid 4998] close(4 [pid 4996] <... openat resumed>) = 3 [pid 7089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... close resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7089] <... prctl resumed>) = 0 [pid 4998] rmdir("./173/file0" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7089] setpgid(0, 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 7089] <... setpgid resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [ 182.081482][ T7084] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7089] <... openat resumed>) = 3 [pid 4998] close(3 [pid 4997] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7089] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7090 [pid 7089] <... write resumed>) = 4 [pid 4998] rmdir("./173" [pid 4997] fstat(3, [pid 7089] close(3 [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7089] <... close resumed>) = 0 [pid 4998] mkdir("./174", 0777 [pid 4997] getdents64(3, [pid 7089] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 ./strace-static-x86_64: Process 7090 attached [pid 4998] <... mkdir resumed>) = 0 [pid 4997] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7089] <... symlink resumed>) = 0 [pid 7090] chdir("./174" [pid 7089] memfd_create("syzkaller", 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7090] <... chdir resumed>) = 0 [pid 7089] <... memfd_create resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4997] lstat("./173/binderfs", [pid 7090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7090] <... prctl resumed>) = 0 [pid 7089] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] unlink("./173/binderfs" [pid 7090] setpgid(0, 0 [pid 4997] <... unlink resumed>) = 0 [pid 7090] <... setpgid resumed>) = 0 [pid 4997] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] close(3 [pid 7090] write(3, "1000", 4 [pid 4998] <... close resumed>) = 0 [pid 7090] <... write resumed>) = 4 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7090] close(3) = 0 [pid 7090] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7090] memfd_create("syzkaller", 0) = 3 [pid 7090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7091 [ 182.142042][ T7084] NILFS (loop0): trying rollback from an earlier position ./strace-static-x86_64: Process 7091 attached [pid 7091] chdir("./174") = 0 [pid 7091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7091] setpgid(0, 0) = 0 [pid 7091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4997] <... umount2 resumed>) = 0 [pid 7091] write(3, "1000", 4 [pid 7088] <... write resumed>) = 2097152 [pid 4997] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7091] <... write resumed>) = 4 [pid 7088] munmap(0x7f46b9f9b000, 2097152 [pid 7091] close(3 [pid 7088] <... munmap resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7091] <... close resumed>) = 0 [pid 7090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7088] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] lstat("./173/file0", [ 182.220852][ T7084] NILFS (loop0): recovery complete [pid 7091] symlink("/dev/binderfs", "./binderfs" [pid 7088] <... openat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7091] <... symlink resumed>) = 0 [pid 7088] ioctl(4, LOOP_SET_FD, 3 [pid 4997] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7091] memfd_create("syzkaller", 0 [pid 7088] <... ioctl resumed>) = 0 [pid 7091] <... memfd_create resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7091] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... openat resumed>) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 7084] <... mount resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 7084] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 7084] chdir("./file0" [pid 4997] rmdir("./173/file0" [pid 7084] <... chdir resumed>) = 0 [pid 7084] ioctl(4, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 7084] <... ioctl resumed>) = 0 [pid 4997] getdents64(3, [pid 7084] close(4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7084] <... close resumed>) = 0 [pid 7084] creat("./bus", 000 [pid 7088] close(3 [pid 4997] close(3 [pid 7088] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 7088] mkdir("./file0", 0777 [pid 4997] rmdir("./173" [pid 7088] <... mkdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 7088] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] mkdir("./174", 0777 [pid 7090] <... write resumed>) = 2097152 [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7093 [ 182.267083][ T7088] loop1: detected capacity change from 0 to 4096 [ 182.278533][ T7092] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ./strace-static-x86_64: Process 7093 attached [pid 7091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7089] <... write resumed>) = 2097152 [pid 7093] chdir("./174" [pid 7089] munmap(0x7f46b9f9b000, 2097152 [pid 7093] <... chdir resumed>) = 0 [pid 7093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7093] setpgid(0, 0) = 0 [pid 7089] <... munmap resumed>) = 0 [pid 7093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7089] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7093] <... openat resumed>) = 3 [pid 7090] munmap(0x7f46b9f9b000, 2097152 [pid 7089] <... openat resumed>) = 4 [pid 7093] write(3, "1000", 4 [pid 7090] <... munmap resumed>) = 0 [pid 7089] ioctl(4, LOOP_SET_FD, 3 [pid 7084] <... creat resumed>) = 4 [pid 7093] <... write resumed>) = 4 [pid 7090] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7084] unlink("./bus" [pid 7090] <... openat resumed>) = 4 [pid 7084] <... unlink resumed>) = 0 [pid 7090] ioctl(4, LOOP_SET_FD, 3 [pid 7084] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7093] close(3) = 0 [pid 7093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7093] memfd_create("syzkaller", 0) = 3 [pid 7093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7089] <... ioctl resumed>) = 0 [pid 7084] <... pwritev2 resumed>) = 65007 [pid 7084] exit_group(0) = ? [pid 7089] close(3) = 0 [ 182.330165][ T7088] NILFS (loop1): invalid segment: Checksum error in segment payload [ 182.352171][ T7089] loop2: detected capacity change from 0 to 4096 [ 182.363343][ T7090] loop3: detected capacity change from 0 to 4096 [pid 7091] <... write resumed>) = 2097152 [pid 7089] mkdir("./file0", 0777) = 0 [pid 7091] munmap(0x7f46b9f9b000, 2097152 [pid 7093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7090] <... ioctl resumed>) = 0 [pid 7089] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7084] +++ exited with 0 +++ [pid 7091] <... munmap resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7084, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7090] close(3 [pid 4993] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7090] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 7091] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7090] mkdir("./file0", 0777 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7090] <... mkdir resumed>) = 0 [pid 4993] getdents64(3, [pid 7091] <... openat resumed>) = 4 [pid 7090] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7091] ioctl(4, LOOP_SET_FD, 3 [pid 4993] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./173/binderfs") = 0 [ 182.390632][ T7088] NILFS (loop1): trying rollback from an earlier position [ 182.412209][ T7091] loop5: detected capacity change from 0 to 4096 [pid 4993] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7091] <... ioctl resumed>) = 0 [pid 7091] close(3) = 0 [pid 7091] mkdir("./file0", 0777 [pid 4993] <... umount2 resumed>) = 0 [pid 7091] <... mkdir resumed>) = 0 [pid 7091] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./173/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7093] <... write resumed>) = 2097152 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [ 182.441394][ T7089] NILFS (loop2): invalid segment: Checksum error in segment payload [ 182.451192][ T7090] NILFS (loop3): invalid segment: Checksum error in segment payload [ 182.460774][ T7088] NILFS (loop1): recovery complete [ 182.472145][ T7089] NILFS (loop2): trying rollback from an earlier position [ 182.480121][ T7091] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 4993] close(4) = 0 [pid 4993] rmdir("./173/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./173") = 0 [pid 7093] munmap(0x7f46b9f9b000, 2097152 [pid 4993] mkdir("./174", 0777 [pid 7093] <... munmap resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 7093] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7093] <... openat resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 7093] ioctl(4, LOOP_SET_FD, 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7095 [pid 7088] <... mount resumed>) = 0 [pid 7088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7088] chdir("./file0") = 0 [pid 7088] ioctl(4, LOOP_CLR_FD) = 0 [pid 7088] close(4./strace-static-x86_64: Process 7095 attached [pid 7093] <... ioctl resumed>) = 0 [pid 7088] <... close resumed>) = 0 [pid 7095] chdir("./174" [pid 7088] creat("./bus", 000 [pid 7095] <... chdir resumed>) = 0 [pid 7095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7093] close(3 [pid 7095] <... prctl resumed>) = 0 [pid 7093] <... close resumed>) = 0 [pid 7095] setpgid(0, 0 [pid 7093] mkdir("./file0", 0777 [pid 7095] <... setpgid resumed>) = 0 [pid 7095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7093] <... mkdir resumed>) = 0 [pid 7095] <... openat resumed>) = 3 [pid 7093] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7095] write(3, "1000", 4) = 4 [pid 7095] close(3) = 0 [pid 7095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7095] memfd_create("syzkaller", 0) = 3 [ 182.482176][ T7090] NILFS (loop3): trying rollback from an earlier position [ 182.506094][ T7093] loop4: detected capacity change from 0 to 4096 [ 182.509683][ T7094] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.529200][ T7089] NILFS (loop2): recovery complete [ 182.532548][ T7091] NILFS (loop5): trying rollback from an earlier position [pid 7095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7088] <... creat resumed>) = 4 [pid 7088] unlink("./bus") = 0 [ 182.561129][ T7093] NILFS (loop4): invalid segment: Checksum error in segment payload [ 182.573771][ T7093] NILFS (loop4): trying rollback from an earlier position [ 182.587522][ T7090] NILFS (loop3): recovery complete [ 182.587638][ T7091] NILFS (loop5): recovery complete [pid 7088] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 7095] <... write resumed>) = 2097152 [pid 7090] <... mount resumed>) = 0 [pid 7088] exit_group(0 [pid 7095] munmap(0x7f46b9f9b000, 2097152 [pid 7093] <... mount resumed>) = 0 [pid 7090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7089] <... mount resumed>) = 0 [pid 7088] <... exit_group resumed>) = ? [pid 7095] <... munmap resumed>) = 0 [pid 7095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 182.622532][ T7093] NILFS (loop4): recovery complete [ 182.628262][ T7097] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.639901][ T7096] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.641759][ T7098] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 182.657317][ T7095] loop0: detected capacity change from 0 to 4096 [pid 7095] ioctl(4, LOOP_SET_FD, 3 [pid 7093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7090] <... openat resumed>) = 3 [pid 7089] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7095] <... ioctl resumed>) = 0 [pid 7093] <... openat resumed>) = 3 [pid 7091] <... mount resumed>) = 0 [pid 7090] chdir("./file0" [pid 7089] <... openat resumed>) = 3 [pid 7093] chdir("./file0" [pid 7091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7088] +++ exited with 0 +++ [pid 7090] <... chdir resumed>) = 0 [pid 7093] <... chdir resumed>) = 0 [pid 7091] <... openat resumed>) = 3 [pid 7090] ioctl(4, LOOP_CLR_FD [pid 7089] chdir("./file0" [pid 7093] ioctl(4, LOOP_CLR_FD [pid 7089] <... chdir resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7088, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 7093] <... ioctl resumed>) = 0 [pid 7091] chdir("./file0" [pid 7090] <... ioctl resumed>) = 0 [pid 7089] ioctl(4, LOOP_CLR_FD [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7095] close(3 [pid 7093] close(4 [pid 7091] <... chdir resumed>) = 0 [pid 7090] close(4 [pid 7089] <... ioctl resumed>) = 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 7093] <... close resumed>) = 0 [pid 4994] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7091] ioctl(4, LOOP_CLR_FD [pid 7093] creat("./bus", 000 [pid 7090] <... close resumed>) = 0 [pid 7089] close(4 [pid 7095] <... close resumed>) = 0 [pid 4994] lstat("./173/binderfs", [pid 7091] <... ioctl resumed>) = 0 [pid 7090] creat("./bus", 000 [pid 7089] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7095] mkdir("./file0", 0777 [pid 7093] <... creat resumed>) = 4 [pid 7091] close(4 [pid 7090] <... creat resumed>) = 4 [pid 7089] creat("./bus", 000 [pid 4994] unlink("./173/binderfs" [pid 7093] unlink("./bus" [pid 7091] <... close resumed>) = 0 [pid 7090] unlink("./bus" [pid 4994] <... unlink resumed>) = 0 [pid 7095] <... mkdir resumed>) = 0 [pid 7093] <... unlink resumed>) = 0 [pid 7091] creat("./bus", 000 [pid 7090] <... unlink resumed>) = 0 [pid 7089] <... creat resumed>) = 4 [pid 4994] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7095] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7093] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7090] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7089] unlink("./bus" [pid 7091] <... creat resumed>) = 4 [pid 7091] unlink("./bus" [pid 7089] <... unlink resumed>) = 0 [pid 7091] <... unlink resumed>) = 0 [pid 7089] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 182.668137][ T7099] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7091] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7090] <... pwritev2 resumed>) = 65007 [pid 7090] exit_group(0) = ? [pid 7093] <... pwritev2 resumed>) = 65007 [pid 7091] <... pwritev2 resumed>) = 65007 [pid 7090] +++ exited with 0 +++ [pid 7089] <... pwritev2 resumed>) = 65007 [pid 7093] exit_group(0) = ? [pid 7091] exit_group(0 [pid 7089] exit_group(0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7090, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 7093] +++ exited with 0 +++ [pid 7091] <... exit_group resumed>) = ? [pid 7089] <... exit_group resumed>) = ? [pid 4994] <... umount2 resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7093, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./173/file0", [pid 4996] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7089] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4994] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] fstat(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7089, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] <... openat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4994] fstat(4, [pid 4997] getdents64(3, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [ 182.752664][ T7095] NILFS (loop0): invalid segment: Checksum error in segment payload [ 182.785394][ T7095] NILFS (loop0): trying rollback from an earlier position [pid 4996] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7091] +++ exited with 0 +++ [pid 4997] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./174/binderfs", [pid 4995] umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7091, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] lstat("./174/binderfs", [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./174/binderfs" [pid 4995] openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... restart_syscall resumed>) = 0 [pid 4997] unlink("./174/binderfs" [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4994] getdents64(4, [pid 4997] <... unlink resumed>) = 0 [pid 4996] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 182.813254][ T7095] NILFS (loop0): recovery complete [ 182.825637][ T7100] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] getdents64(4, [pid 7095] <... mount resumed>) = 0 [pid 4998] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = 0 [pid 4995] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] fstat(3, [pid 4995] lstat("./170/binderfs", [pid 7095] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] close(4 [pid 4998] getdents64(3, [pid 4995] unlink("./170/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... unlink resumed>) = 0 [pid 4998] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7095] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4998] lstat("./174/binderfs", [pid 4997] <... umount2 resumed>) = 0 [pid 4996] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7095] chdir("./file0" [pid 4998] unlink("./174/binderfs" [pid 7095] <... chdir resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] rmdir("./173/file0" [pid 4998] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... umount2 resumed>) = 0 [pid 4995] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7095] ioctl(4, LOOP_CLR_FD [pid 4997] lstat("./174/file0", [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 7095] <... ioctl resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7095] close(4 [pid 4997] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, [pid 7095] <... close resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7095] creat("./bus", 000 [pid 4997] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./170/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./170") = 0 [pid 4995] mkdir("./171", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... openat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4994] rmdir("./173" [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7101 [pid 4994] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 7101 attached [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, [pid 4994] mkdir("./174", 0777 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7095] <... creat resumed>) = 4 [pid 4997] close(4 [pid 7095] unlink("./bus" [pid 4997] <... close resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4997] rmdir("./174/file0" [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7101] chdir("./171") = 0 [pid 7101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 7101] setpgid(0, 0 [pid 7095] <... unlink resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] <... openat resumed>) = 3 [pid 4996] lstat("./174/file0", [pid 7095] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] close(3) = 0 [pid 4996] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] rmdir("./174" [pid 4994] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] mkdir("./175", 0777 [pid 4996] fstat(4, [pid 7101] <... setpgid resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7102 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... openat resumed>) = 3 [pid 4996] getdents64(4, [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4996] close(4 [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... close resumed>) = 0 [pid 7101] <... openat resumed>) = 3 [pid 7101] write(3, "1000", 4) = 4 [pid 7101] close(3) = 0 [pid 7101] symlink("/dev/binderfs", "./binderfs" [pid 4996] rmdir("./174/file0" [pid 7101] <... symlink resumed>) = 0 [pid 7101] memfd_create("syzkaller", 0) = 3 [pid 7101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7103 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7095] <... pwritev2 resumed>) = 65007 [pid 4996] close(3./strace-static-x86_64: Process 7103 attached [pid 7095] exit_group(0 [pid 4996] <... close resumed>) = 0 [pid 7103] chdir("./175" [pid 7095] <... exit_group resumed>) = ? [pid 4996] rmdir("./174"./strace-static-x86_64: Process 7102 attached [pid 7103] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 7103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7103] setpgid(0, 0) = 0 [pid 7103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7103] write(3, "1000", 4) = 4 [pid 7103] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 7103] <... close resumed>) = 0 [pid 7103] symlink("/dev/binderfs", "./binderfs" [pid 7102] chdir("./174" [pid 4996] mkdir("./175", 0777 [pid 7103] <... symlink resumed>) = 0 [pid 7103] memfd_create("syzkaller", 0) = 3 [pid 7102] <... chdir resumed>) = 0 [pid 7103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... mkdir resumed>) = 0 [pid 7102] <... prctl resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7102] setpgid(0, 0 [pid 4996] <... openat resumed>) = 3 [pid 7102] <... setpgid resumed>) = 0 [pid 7095] +++ exited with 0 +++ [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7095, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 7102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7102] <... openat resumed>) = 3 [pid 4993] <... restart_syscall resumed>) = 0 [pid 7102] write(3, "1000", 4 [pid 4996] close(3 [pid 4993] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 7102] <... write resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7102] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7102] <... close resumed>) = 0 [pid 4998] lstat("./174/file0", [pid 4993] lstat("./174/binderfs", [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./174/binderfs" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7102] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... unlink resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7102] <... symlink resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7104 [pid 7102] memfd_create("syzkaller", 0 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7102] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 7104 attached [pid 7102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7102] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] close(4) = 0 [pid 4998] rmdir("./174/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./174") = 0 [pid 4998] mkdir("./175", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7105 ./strace-static-x86_64: Process 7105 attached [pid 7105] chdir("./175") = 0 [pid 7103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7105] setpgid(0, 0) = 0 [pid 7104] chdir("./175" [pid 7105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7105] write(3, "1000", 4) = 4 [pid 7105] close(3) = 0 [pid 7105] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7104] <... chdir resumed>) = 0 [pid 7105] memfd_create("syzkaller", 0 [pid 7104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7105] <... memfd_create resumed>) = 3 [pid 7104] <... prctl resumed>) = 0 [pid 7105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7104] setpgid(0, 0 [pid 7105] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7104] <... setpgid resumed>) = 0 [pid 7104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7104] write(3, "1000", 4) = 4 [pid 7104] close(3) = 0 [pid 7104] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7104] memfd_create("syzkaller", 0) = 3 [pid 7104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7101] <... write resumed>) = 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./174/file0", [pid 7101] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7103] <... write resumed>) = 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7101] <... munmap resumed>) = 0 [pid 7101] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 7101] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... openat resumed>) = 4 [pid 7102] <... write resumed>) = 2097152 [pid 4993] fstat(4, [pid 7103] munmap(0x7f46b9f9b000, 2097152 [pid 7104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7103] <... munmap resumed>) = 0 [pid 7103] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7103] ioctl(4, LOOP_SET_FD, 3 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./174/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./174") = 0 [pid 7101] <... ioctl resumed>) = 0 [pid 4993] mkdir("./175", 0777 [pid 7101] close(3) = 0 [pid 7101] mkdir("./file0", 0777 [pid 4993] <... mkdir resumed>) = 0 [pid 7101] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7101] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7105] <... write resumed>) = 2097152 [pid 7103] <... ioctl resumed>) = 0 [pid 7102] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... openat resumed>) = 3 [pid 7105] munmap(0x7f46b9f9b000, 2097152 [pid 7103] close(3 [pid 7104] <... write resumed>) = 2097152 [pid 7104] munmap(0x7f46b9f9b000, 2097152 [pid 7105] <... munmap resumed>) = 0 [pid 7102] <... munmap resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7103] <... close resumed>) = 0 [pid 7103] mkdir("./file0", 0777 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7105] openat(AT_FDCWD, "/dev/loop5", O_RDWR [ 183.102825][ T7101] loop2: detected capacity change from 0 to 4096 [ 183.123640][ T7103] loop4: detected capacity change from 0 to 4096 [pid 7102] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7103] <... mkdir resumed>) = 0 [pid 4993] close(3 [pid 7104] <... munmap resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 7104] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7104] ioctl(4, LOOP_SET_FD, 3 [pid 7105] <... openat resumed>) = 4 [pid 7103] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7102] <... openat resumed>) = 4 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7105] ioctl(4, LOOP_SET_FD, 3 [pid 7104] <... ioctl resumed>) = 0 [pid 7102] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7106 attached [pid 7106] chdir("./175") = 0 [ 183.173432][ T7104] loop3: detected capacity change from 0 to 4096 [ 183.181520][ T7101] NILFS (loop2): invalid segment: Checksum error in segment payload [ 183.191133][ T7101] NILFS (loop2): trying rollback from an earlier position [ 183.191696][ T7103] NILFS (loop4): invalid segment: Checksum error in segment payload [ 183.208114][ T7105] loop5: detected capacity change from 0 to 4096 [ 183.208558][ T7101] NILFS (loop2): recovery complete [pid 7106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7106] setpgid(0, 0) = 0 [pid 7106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7105] <... ioctl resumed>) = 0 [pid 7104] close(3 [pid 7102] <... ioctl resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7106 [pid 7106] write(3, "1000", 4) = 4 [pid 7106] close(3) = 0 [pid 7106] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7106] memfd_create("syzkaller", 0) = 3 [pid 7106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7105] close(3 [pid 7104] <... close resumed>) = 0 [pid 7102] close(3 [pid 7105] <... close resumed>) = 0 [pid 7104] mkdir("./file0", 0777 [pid 7102] <... close resumed>) = 0 [pid 7106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7105] mkdir("./file0", 0777 [pid 7104] <... mkdir resumed>) = 0 [pid 7102] mkdir("./file0", 0777 [pid 7105] <... mkdir resumed>) = 0 [pid 7104] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7101] <... mount resumed>) = 0 [ 183.214766][ T7102] loop1: detected capacity change from 0 to 4096 [ 183.227624][ T7103] NILFS (loop4): trying rollback from an earlier position [ 183.244822][ T7107] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.255524][ T7103] NILFS (loop4): recovery complete [pid 7106] <... write resumed>) = 2097152 [pid 7105] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7102] <... mkdir resumed>) = 0 [pid 7101] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7106] munmap(0x7f46b9f9b000, 2097152 [pid 7102] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7101] <... openat resumed>) = 3 [pid 7106] <... munmap resumed>) = 0 [pid 7101] chdir("./file0" [pid 7106] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7101] <... chdir resumed>) = 0 [pid 7106] <... openat resumed>) = 4 [pid 7101] ioctl(4, LOOP_CLR_FD [pid 7106] ioctl(4, LOOP_SET_FD, 3 [pid 7101] <... ioctl resumed>) = 0 [pid 7103] <... mount resumed>) = 0 [pid 7101] close(4 [pid 7103] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7101] <... close resumed>) = 0 [pid 7101] creat("./bus", 000 [pid 7103] <... openat resumed>) = 3 [pid 7103] chdir("./file0" [pid 7101] <... creat resumed>) = 4 [pid 7103] <... chdir resumed>) = 0 [pid 7101] unlink("./bus" [pid 7106] <... ioctl resumed>) = 0 [pid 7103] ioctl(4, LOOP_CLR_FD [pid 7106] close(3 [pid 7101] <... unlink resumed>) = 0 [pid 7106] <... close resumed>) = 0 [pid 7103] <... ioctl resumed>) = 0 [ 183.269193][ T7104] NILFS (loop3): invalid segment: Checksum error in segment payload [ 183.282124][ T7106] loop0: detected capacity change from 0 to 4096 [ 183.283247][ T7105] NILFS (loop5): invalid segment: Checksum error in segment payload [ 183.288820][ T7102] NILFS (loop1): invalid segment: Checksum error in segment payload [ 183.298315][ T7108] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7101] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7106] mkdir("./file0", 0777 [pid 7103] close(4 [pid 7106] <... mkdir resumed>) = 0 [pid 7103] <... close resumed>) = 0 [pid 7106] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7103] creat("./bus", 000 [pid 7101] <... pwritev2 resumed>) = 65007 [pid 7101] exit_group(0) = ? [pid 7103] <... creat resumed>) = 4 [pid 7101] +++ exited with 0 +++ [ 183.325672][ T7104] NILFS (loop3): trying rollback from an earlier position [ 183.345595][ T7105] NILFS (loop5): trying rollback from an earlier position [ 183.350675][ T7104] NILFS (loop3): recovery complete [ 183.359361][ T7106] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7103] unlink("./bus" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7101, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 7103] <... unlink resumed>) = 0 [pid 4995] umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7103] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7104] <... mount resumed>) = 0 [pid 4995] getdents64(3, [pid 7104] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7104] chdir("./file0") = 0 [pid 7104] ioctl(4, LOOP_CLR_FD) = 0 [pid 7104] close(4) = 0 [pid 7104] creat("./bus", 000 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./171/binderfs") = 0 [ 183.370478][ T7102] NILFS (loop1): trying rollback from an earlier position [ 183.385352][ T7109] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.396900][ T7106] NILFS (loop0): trying rollback from an earlier position [ 183.407432][ T7102] NILFS (loop1): recovery complete [ 183.407446][ T7105] NILFS (loop5): recovery complete [pid 4995] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7105] <... mount resumed>) = 0 [pid 7103] <... pwritev2 resumed>) = 65007 [pid 7105] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7104] <... creat resumed>) = 4 [pid 7103] exit_group(0 [pid 7105] <... openat resumed>) = 3 [pid 7104] unlink("./bus" [pid 7103] <... exit_group resumed>) = ? [pid 7105] chdir("./file0" [pid 7104] <... unlink resumed>) = 0 [pid 7103] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7103, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7105] <... chdir resumed>) = 0 [pid 7104] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7105] ioctl(4, LOOP_CLR_FD [pid 4997] lstat("./175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./175/binderfs") = 0 [pid 4997] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7105] <... ioctl resumed>) = 0 [ 183.431027][ T7110] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 183.433459][ T7106] NILFS (loop0): recovery complete [pid 7105] close(4) = 0 [pid 7105] creat("./bus", 000 [pid 7102] <... mount resumed>) = 0 [pid 7102] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7102] chdir("./file0") = 0 [pid 7102] ioctl(4, LOOP_CLR_FD) = 0 [pid 7102] close(4) = 0 [pid 7102] creat("./bus", 000 [pid 7104] <... pwritev2 resumed>) = 65007 [pid 7105] <... creat resumed>) = 4 [pid 7105] unlink("./bus" [pid 7104] exit_group(0 [pid 7105] <... unlink resumed>) = 0 [pid 7104] <... exit_group resumed>) = ? [pid 7105] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 4995] <... umount2 resumed>) = 0 [pid 7105] exit_group(0 [pid 4995] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7105] <... exit_group resumed>) = ? [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./171/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7104] +++ exited with 0 +++ [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7104, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4995] openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7105] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [ 183.487361][ T7111] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] close(4 [pid 7102] <... creat resumed>) = 4 [pid 4996] fstat(3, [pid 4995] <... close resumed>) = 0 [pid 7102] unlink("./bus" [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7105, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] rmdir("./171/file0" [pid 7102] <... unlink resumed>) = 0 [pid 4998] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = 0 [pid 4996] getdents64(3, [pid 7102] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(3, [pid 4998] fstat(3, [pid 4996] lstat("./175/binderfs", [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] lstat("./175/file0", [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] close(3 [pid 4998] getdents64(3, [pid 4996] unlink("./175/binderfs" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./171" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... rmdir resumed>) = 0 [pid 7102] <... pwritev2 resumed>) = 65007 [pid 4998] unlink("./175/binderfs" [pid 4997] <... openat resumed>) = 4 [pid 7102] exit_group(0 [pid 4998] <... unlink resumed>) = 0 [pid 4995] mkdir("./172", 0777 [pid 7102] <... exit_group resumed>) = ? [pid 4998] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(4, [pid 4995] <... mkdir resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7106] <... mount resumed>) = 0 [pid 4997] getdents64(4, [pid 4995] <... openat resumed>) = 3 [pid 7106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 7106] <... openat resumed>) = 3 [pid 4997] getdents64(4, [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7106] chdir("./file0" [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7106] <... chdir resumed>) = 0 [pid 4995] close(3 [pid 7106] ioctl(4, LOOP_CLR_FD [pid 4997] close(4 [pid 7106] <... ioctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7106] close(4 [pid 4997] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7106] <... close resumed>) = 0 [pid 4997] rmdir("./175/file0" [pid 7106] creat("./bus", 000 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7113 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3./strace-static-x86_64: Process 7113 attached ) = 0 [pid 4997] rmdir("./175" [pid 7113] chdir("./172" [pid 4997] <... rmdir resumed>) = 0 [pid 7113] <... chdir resumed>) = 0 [pid 4997] mkdir("./176", 0777 [pid 7102] +++ exited with 0 +++ [pid 4997] <... mkdir resumed>) = 0 [pid 7113] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7102, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 7113] <... prctl resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7113] setpgid(0, 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... restart_syscall resumed>) = 0 [pid 7113] <... setpgid resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] close(3 [pid 4996] <... umount2 resumed>) = 0 [pid 7113] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7113] write(3, "1000", 4 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7113] <... write resumed>) = 4 [pid 4996] lstat("./175/file0", [pid 4994] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7113] close(3 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7114 [pid 4996] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 7113] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7113] symlink("/dev/binderfs", "./binderfs" [pid 4996] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(3, [pid 4996] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7113] <... symlink resumed>) = 0 [pid 4996] fstat(4, [pid 4994] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7113] memfd_create("syzkaller", 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7113] <... memfd_create resumed>) = 3 [pid 4996] getdents64(4, [pid 4994] lstat("./174/binderfs", [pid 7113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7113] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] getdents64(4, [pid 4994] unlink("./174/binderfs" [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4996] close(4 [pid 4994] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./175/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./175") = 0 [pid 4996] mkdir("./176", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [ 183.593710][ T7112] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7106] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = 0 [pid 4996] close(3 [pid 7106] unlink("./bus" [pid 4996] <... close resumed>) = 0 [pid 7106] <... unlink resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7106] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7114 attached [pid 4998] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7115 [pid 7114] chdir("./176" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7114] <... chdir resumed>) = 0 [pid 4998] lstat("./175/file0", [pid 7114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7114] <... prctl resumed>) = 0 [pid 4998] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7114] setpgid(0, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7114] <... setpgid resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... openat resumed>) = 4 ./strace-static-x86_64: Process 7115 attached [pid 7114] <... openat resumed>) = 3 [pid 4998] fstat(4, [pid 7115] chdir("./176" [pid 7114] write(3, "1000", 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7115] <... chdir resumed>) = 0 [pid 7114] <... write resumed>) = 4 [pid 4998] getdents64(4, [pid 7115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7114] close(3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7115] <... prctl resumed>) = 0 [pid 7114] <... close resumed>) = 0 [pid 7106] <... pwritev2 resumed>) = 65007 [pid 4998] getdents64(4, [pid 7115] setpgid(0, 0 [pid 7114] symlink("/dev/binderfs", "./binderfs" [pid 7106] exit_group(0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7115] <... setpgid resumed>) = 0 [pid 4998] close(4 [pid 7115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... close resumed>) = 0 [pid 7115] <... openat resumed>) = 3 [pid 7114] <... symlink resumed>) = 0 [pid 7106] <... exit_group resumed>) = ? [pid 4998] rmdir("./175/file0" [pid 7115] write(3, "1000", 4 [pid 7114] memfd_create("syzkaller", 0 [pid 4998] <... rmdir resumed>) = 0 [pid 7115] <... write resumed>) = 4 [pid 4998] getdents64(3, [pid 7115] close(3 [pid 7114] <... memfd_create resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7115] <... close resumed>) = 0 [pid 7114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] close(3 [pid 7115] symlink("/dev/binderfs", "./binderfs" [pid 7114] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... close resumed>) = 0 [pid 7115] <... symlink resumed>) = 0 [pid 4998] rmdir("./175" [pid 7115] memfd_create("syzkaller", 0 [pid 4998] <... rmdir resumed>) = 0 [pid 7115] <... memfd_create resumed>) = 3 [pid 4998] mkdir("./176", 0777 [pid 7115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... mkdir resumed>) = 0 [pid 7115] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4994] lstat("./174/file0", [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7116 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7106] +++ exited with 0 +++ [pid 4994] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7106, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4994] <... openat resumed>) = 4 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4994] fstat(4, [pid 4993] <... restart_syscall resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 7116 attached [pid 4994] getdents64(4, [pid 7116] chdir("./176" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7116] <... chdir resumed>) = 0 [pid 4994] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7116] <... prctl resumed>) = 0 [pid 4994] close(4 [pid 4993] <... openat resumed>) = 3 [pid 7116] setpgid(0, 0 [pid 4994] <... close resumed>) = 0 [pid 4993] fstat(3, [pid 7116] <... setpgid resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] rmdir("./174/file0" [pid 4993] getdents64(3, [pid 7116] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7116] write(3, "1000", 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7116] <... write resumed>) = 4 [pid 4994] getdents64(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7116] close(3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] lstat("./175/binderfs", [pid 7116] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7116] symlink("/dev/binderfs", "./binderfs" [pid 4993] unlink("./175/binderfs" [pid 7116] <... symlink resumed>) = 0 [pid 7115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... unlink resumed>) = 0 [pid 7116] memfd_create("syzkaller", 0 [pid 4993] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7116] <... memfd_create resumed>) = 3 [pid 4994] close(3 [pid 7116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... close resumed>) = 0 [pid 7116] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7113] <... write resumed>) = 2097152 [pid 4994] rmdir("./174" [pid 7113] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... rmdir resumed>) = 0 [pid 7113] <... munmap resumed>) = 0 [pid 4994] mkdir("./175", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 7113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7117 [pid 7113] <... openat resumed>) = 4 [pid 7113] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7117 attached [pid 7117] chdir("./175") = 0 [pid 7117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7115] <... write resumed>) = 2097152 [pid 7117] setpgid(0, 0) = 0 [pid 7117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7117] write(3, "1000", 4) = 4 [pid 7117] close(3) = 0 [pid 7117] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7117] memfd_create("syzkaller", 0) = 3 [pid 7117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7117] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7115] munmap(0x7f46b9f9b000, 2097152 [pid 7114] <... write resumed>) = 2097152 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7115] <... munmap resumed>) = 0 [pid 7114] munmap(0x7f46b9f9b000, 2097152 [pid 7113] <... ioctl resumed>) = 0 [pid 7115] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] lstat("./175/file0", [pid 7115] <... openat resumed>) = 4 [pid 7114] <... munmap resumed>) = 0 [pid 7113] close(3 [pid 7115] ioctl(4, LOOP_SET_FD, 3 [pid 7114] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7113] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 183.801102][ T7113] loop2: detected capacity change from 0 to 4096 [pid 7116] <... write resumed>) = 2097152 [pid 7114] <... openat resumed>) = 4 [pid 7113] mkdir("./file0", 0777 [pid 4993] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7116] munmap(0x7f46b9f9b000, 2097152 [pid 7114] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7113] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./175/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./175" [pid 7116] <... munmap resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7116] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7113] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] mkdir("./176", 0777 [pid 7116] <... openat resumed>) = 4 [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 7116] ioctl(4, LOOP_SET_FD, 3 [pid 7114] <... ioctl resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7118 [pid 7115] <... ioctl resumed>) = 0 [pid 7115] close(3) = 0 [pid 7115] mkdir("./file0", 0777) = 0 [pid 7115] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7116] <... ioctl resumed>) = 0 [pid 7114] close(3 [pid 7116] close(3 [pid 7114] <... close resumed>) = 0 ./strace-static-x86_64: Process 7118 attached [pid 7118] chdir("./176") = 0 [pid 7118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7118] setpgid(0, 0) = 0 [ 183.851216][ T7115] loop3: detected capacity change from 0 to 4096 [ 183.859966][ T7114] loop4: detected capacity change from 0 to 4096 [ 183.875553][ T7113] NILFS (loop2): invalid segment: Checksum error in segment payload [ 183.888380][ T7116] loop5: detected capacity change from 0 to 4096 [pid 7118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7118] write(3, "1000", 4) = 4 [pid 7118] close(3) = 0 [pid 7118] symlink("/dev/binderfs", "./binderfs" [pid 7117] <... write resumed>) = 2097152 [pid 7116] <... close resumed>) = 0 [pid 7114] mkdir("./file0", 0777 [pid 7118] <... symlink resumed>) = 0 [pid 7117] munmap(0x7f46b9f9b000, 2097152 [pid 7116] mkdir("./file0", 0777 [pid 7114] <... mkdir resumed>) = 0 [pid 7118] memfd_create("syzkaller", 0 [pid 7116] <... mkdir resumed>) = 0 [pid 7114] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7118] <... memfd_create resumed>) = 3 [pid 7116] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7117] <... munmap resumed>) = 0 [ 183.897406][ T7113] NILFS (loop2): trying rollback from an earlier position [ 183.909953][ T7115] NILFS (loop3): invalid segment: Checksum error in segment payload [ 183.932392][ T7114] NILFS (loop4): invalid segment: Checksum error in segment payload [ 183.936542][ T7115] NILFS (loop3): trying rollback from an earlier position [pid 7118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7117] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7117] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7117] close(3) = 0 [pid 7117] mkdir("./file0", 0777) = 0 [ 183.941162][ T7116] NILFS (loop5): invalid segment: Checksum error in segment payload [ 183.957172][ T7117] loop1: detected capacity change from 0 to 4096 [ 183.971625][ T7113] NILFS (loop2): recovery complete [ 183.977043][ T7114] NILFS (loop4): trying rollback from an earlier position [ 183.984904][ T7116] NILFS (loop5): trying rollback from an earlier position [pid 7117] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7113] <... mount resumed>) = 0 [pid 7113] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7118] <... write resumed>) = 2097152 [pid 7113] <... openat resumed>) = 3 [pid 7113] chdir("./file0") = 0 [pid 7113] ioctl(4, LOOP_CLR_FD [pid 7118] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7118] ioctl(4, LOOP_SET_FD, 3 [pid 7113] <... ioctl resumed>) = 0 [pid 7118] <... ioctl resumed>) = 0 [pid 7118] close(3) = 0 [pid 7118] mkdir("./file0", 0777 [pid 7113] close(4) = 0 [ 184.002196][ T7119] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.020981][ T7115] NILFS (loop3): recovery complete [ 184.023895][ T7117] NILFS (loop1): invalid segment: Checksum error in segment payload [ 184.035305][ T7118] loop0: detected capacity change from 0 to 4096 [ 184.035467][ T7114] NILFS (loop4): recovery complete [pid 7113] creat("./bus", 000 [pid 7116] <... mount resumed>) = 0 [pid 7118] <... mkdir resumed>) = 0 [pid 7118] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7113] <... creat resumed>) = 4 [pid 7116] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7115] <... mount resumed>) = 0 [ 184.048144][ T7116] NILFS (loop5): recovery complete [ 184.055008][ T7117] NILFS (loop1): trying rollback from an earlier position [ 184.064041][ T7121] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.080465][ T7118] NILFS (loop0): invalid segment: Checksum error in segment payload [ 184.088690][ T7122] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7114] <... mount resumed>) = 0 [pid 7116] <... openat resumed>) = 3 [pid 7115] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7114] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7113] unlink("./bus" [pid 7115] <... openat resumed>) = 3 [pid 7115] chdir("./file0") = 0 [pid 7115] ioctl(4, LOOP_CLR_FD) = 0 [pid 7115] close(4) = 0 [pid 7115] creat("./bus", 000 [pid 7116] chdir("./file0" [pid 7114] <... openat resumed>) = 3 [pid 7113] <... unlink resumed>) = 0 [pid 7117] <... mount resumed>) = 0 [pid 7116] <... chdir resumed>) = 0 [pid 7114] chdir("./file0" [pid 7113] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7117] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7116] ioctl(4, LOOP_CLR_FD [pid 7114] <... chdir resumed>) = 0 [pid 7116] <... ioctl resumed>) = 0 [pid 7116] close(4 [pid 7114] ioctl(4, LOOP_CLR_FD [pid 7116] <... close resumed>) = 0 [pid 7117] <... openat resumed>) = 3 [pid 7116] creat("./bus", 000 [pid 7114] <... ioctl resumed>) = 0 [pid 7117] chdir("./file0" [pid 7115] <... creat resumed>) = 4 [pid 7114] close(4) = 0 [pid 7115] unlink("./bus" [pid 7114] creat("./bus", 000 [pid 7117] <... chdir resumed>) = 0 [pid 7115] <... unlink resumed>) = 0 [pid 7116] <... creat resumed>) = 4 [pid 7117] ioctl(4, LOOP_CLR_FD) = 0 [pid 7116] unlink("./bus" [pid 7115] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7117] close(4 [pid 7116] <... unlink resumed>) = 0 [pid 7114] <... creat resumed>) = 4 [pid 7117] <... close resumed>) = 0 [pid 7116] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7114] unlink("./bus" [pid 7117] creat("./bus", 000 [pid 7114] <... unlink resumed>) = 0 [pid 7114] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7117] <... creat resumed>) = 4 [pid 7117] unlink("./bus" [pid 7113] <... pwritev2 resumed>) = 65007 [pid 7117] <... unlink resumed>) = 0 [pid 7115] <... pwritev2 resumed>) = 65007 [pid 7117] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7115] exit_group(0 [ 184.096542][ T7117] NILFS (loop1): recovery complete [ 184.101310][ T7120] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.106344][ T7118] NILFS (loop0): trying rollback from an earlier position [ 184.123677][ T7123] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7113] exit_group(0 [pid 7115] <... exit_group resumed>) = ? [pid 7117] <... pwritev2 resumed>) = 65007 [pid 7116] <... pwritev2 resumed>) = 65007 [pid 7114] <... pwritev2 resumed>) = 65007 [pid 7113] <... exit_group resumed>) = ? [pid 7117] exit_group(0 [pid 7116] exit_group(0 [pid 7114] exit_group(0 [pid 7117] <... exit_group resumed>) = ? [pid 7116] <... exit_group resumed>) = ? [pid 7114] <... exit_group resumed>) = ? [pid 7115] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7115, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7116] +++ exited with 0 +++ [pid 7114] +++ exited with 0 +++ [pid 7113] +++ exited with 0 +++ [pid 4996] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7117] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7116, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7114, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7113, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7117, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] lstat("./176/binderfs", [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4996] unlink("./176/binderfs" [pid 4994] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [ 184.207477][ T7118] NILFS (loop0): recovery complete [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 7118] <... mount resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(3, [pid 7118] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7118] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4997] fstat(3, [pid 4994] getdents64(3, [pid 7118] chdir("./file0" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7118] <... chdir resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4994] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7118] ioctl(4, LOOP_CLR_FD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7118] <... ioctl resumed>) = 0 [pid 4998] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./175/binderfs", [pid 7118] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7118] <... close resumed>) = 0 [pid 4998] lstat("./176/binderfs", [pid 4997] lstat("./176/binderfs", [pid 4995] openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] unlink("./175/binderfs" [pid 7118] creat("./bus", 000 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4998] unlink("./176/binderfs" [pid 4997] unlink("./176/binderfs" [pid 4995] <... openat resumed>) = 3 [pid 4994] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7118] <... creat resumed>) = 4 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4995] fstat(3, [pid 7118] unlink("./bus" [pid 4998] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7118] <... unlink resumed>) = 0 [pid 4995] umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [ 184.248007][ T7124] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7118] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./172/binderfs", [pid 4996] lstat("./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./172/binderfs" [pid 4996] rmdir("./176/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./176") = 0 [pid 4996] mkdir("./177", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7125 ./strace-static-x86_64: Process 7125 attached [pid 7125] chdir("./177") = 0 [pid 7125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7125] setpgid(0, 0) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 7125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7125] write(3, "1000", 4) = 4 [pid 7125] close(3) = 0 [pid 7125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7125] memfd_create("syzkaller", 0) = 3 [pid 7125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4995] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./176/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 7118] <... pwritev2 resumed>) = 65007 [pid 4998] rmdir("./176" [pid 7118] exit_group(0) = ? [pid 4998] <... rmdir resumed>) = 0 [pid 4998] mkdir("./177", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7118] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7118, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./176/binderfs") = 0 [pid 4993] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7126 [pid 7125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 7126 attached [pid 7126] chdir("./177") = 0 [pid 7126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7126] setpgid(0, 0 [pid 4994] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7126] <... setpgid resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./175/file0", [pid 7126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./176/file0", [pid 4994] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7126] <... openat resumed>) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7126] write(3, "1000", 4 [pid 4997] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [pid 7126] <... write resumed>) = 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] fstat(4, [pid 4997] <... openat resumed>) = 4 [pid 7126] close(3 [pid 4997] fstat(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7126] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7126] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7125] <... write resumed>) = 2097152 [pid 4997] getdents64(4, [pid 4995] <... umount2 resumed>) = 0 [pid 4994] getdents64(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4994] close(4 [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4997] rmdir("./176/file0" [pid 4994] rmdir("./175/file0" [pid 7126] <... symlink resumed>) = 0 [pid 7125] munmap(0x7f46b9f9b000, 2097152 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] getdents64(3, [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4994] close(3 [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4997] rmdir("./176" [pid 4994] rmdir("./175" [pid 7126] memfd_create("syzkaller", 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... rmdir resumed>) = 0 [pid 4997] mkdir("./177", 0777 [pid 4995] lstat("./172/file0", [pid 4994] mkdir("./176", 0777 [pid 7126] <... memfd_create resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 7126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7126] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4994] close(3 [pid 4997] <... close resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 4 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7127 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7128 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./176/file0", ./strace-static-x86_64: Process 7128 attached ./strace-static-x86_64: Process 7127 attached [pid 7128] chdir("./176" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7128] <... chdir resumed>) = 0 [pid 7127] chdir("./177" [pid 7128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7127] <... chdir resumed>) = 0 [pid 4993] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7128] <... prctl resumed>) = 0 [pid 7127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7128] setpgid(0, 0 [pid 7127] <... prctl resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7128] <... setpgid resumed>) = 0 [pid 7127] setpgid(0, 0 [pid 7128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7127] <... setpgid resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7128] <... openat resumed>) = 3 [pid 7127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] fstat(4, [pid 4993] <... openat resumed>) = 4 [pid 7128] write(3, "1000", 4 [pid 7127] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(4, [pid 7128] <... write resumed>) = 4 [pid 7127] write(3, "1000", 4 [pid 4995] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7128] close(3 [pid 7127] <... write resumed>) = 4 [pid 7125] <... munmap resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 7128] <... close resumed>) = 0 [pid 7127] close(3 [pid 7125] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7128] symlink("/dev/binderfs", "./binderfs" [pid 7127] <... close resumed>) = 0 [pid 7125] <... openat resumed>) = 4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(4, [pid 7128] <... symlink resumed>) = 0 [pid 7127] symlink("/dev/binderfs", "./binderfs" [pid 7125] ioctl(4, LOOP_SET_FD, 3 [pid 4995] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7128] memfd_create("syzkaller", 0 [pid 7127] <... symlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] close(4 [pid 7128] <... memfd_create resumed>) = 3 [pid 7127] memfd_create("syzkaller", 0 [pid 4993] <... close resumed>) = 0 [pid 7128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7127] <... memfd_create resumed>) = 3 [pid 4993] rmdir("./176/file0" [pid 7128] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7127] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7125] <... ioctl resumed>) = 0 [pid 4995] rmdir("./172/file0" [pid 4993] getdents64(3, [pid 7126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./176" [pid 7125] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 7127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7125] <... close resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] mkdir("./177", 0777 [pid 7125] mkdir("./file0", 0777 [pid 4995] getdents64(3, [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7125] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 7125] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4995] close(3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] <... close resumed>) = 0 [pid 4993] close(3 [pid 4995] rmdir("./172" [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./173", 0777 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7129 [pid 4995] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 7129 attached ) = -1 ENXIO (No such device or address) [pid 7129] chdir("./177" [pid 7128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] close(3 [pid 7129] <... chdir resumed>) = 0 [pid 4995] <... close resumed>) = 0 [ 184.484582][ T7125] loop3: detected capacity change from 0 to 4096 [pid 7129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7129] <... prctl resumed>) = 0 [pid 7129] setpgid(0, 0) = 0 [pid 7129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7129] write(3, "1000", 4) = 4 [pid 7129] close(3) = 0 [pid 7129] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 7130 attached ) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7130 [pid 7130] chdir("./173" [pid 7129] memfd_create("syzkaller", 0 [pid 7130] <... chdir resumed>) = 0 [pid 7129] <... memfd_create resumed>) = 3 [pid 7130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7130] <... prctl resumed>) = 0 [pid 7129] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7130] setpgid(0, 0 [pid 7126] <... write resumed>) = 2097152 [pid 7130] <... setpgid resumed>) = 0 [pid 7130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7130] write(3, "1000", 4) = 4 [pid 7126] munmap(0x7f46b9f9b000, 2097152 [pid 7130] close(3) = 0 [pid 7130] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7126] <... munmap resumed>) = 0 [pid 7130] memfd_create("syzkaller", 0 [ 184.547485][ T7125] NILFS (loop3): invalid segment: Checksum error in segment payload [ 184.564229][ T7125] NILFS (loop3): trying rollback from an earlier position [pid 7126] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7130] <... memfd_create resumed>) = 3 [pid 7128] <... write resumed>) = 2097152 [pid 7130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7126] <... openat resumed>) = 4 [pid 7130] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7126] ioctl(4, LOOP_SET_FD, 3 [pid 7129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7128] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7127] <... write resumed>) = 2097152 [pid 7126] <... ioctl resumed>) = 0 [pid 7126] close(3 [pid 7128] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7126] <... close resumed>) = 0 [pid 7125] <... mount resumed>) = 0 [pid 7128] ioctl(4, LOOP_SET_FD, 3 [pid 7130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7127] munmap(0x7f46b9f9b000, 2097152 [pid 7126] mkdir("./file0", 0777 [pid 7125] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7128] <... ioctl resumed>) = 0 [pid 7128] close(3) = 0 [pid 7128] mkdir("./file0", 0777) = 0 [pid 7128] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7127] <... munmap resumed>) = 0 [pid 7126] <... mkdir resumed>) = 0 [pid 7127] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7126] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7125] <... openat resumed>) = 3 [pid 7127] <... openat resumed>) = 4 [pid 7125] chdir("./file0") = 0 [ 184.609736][ T7125] NILFS (loop3): recovery complete [ 184.624384][ T7126] loop5: detected capacity change from 0 to 4096 [ 184.636953][ T7131] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.638534][ T7128] loop1: detected capacity change from 0 to 4096 [pid 7127] ioctl(4, LOOP_SET_FD, 3 [pid 7125] ioctl(4, LOOP_CLR_FD) = 0 [pid 7125] close(4) = 0 [pid 7127] <... ioctl resumed>) = 0 [pid 7125] creat("./bus", 000 [pid 7127] close(3) = 0 [pid 7125] <... creat resumed>) = 4 [pid 7127] mkdir("./file0", 0777 [pid 7125] unlink("./bus") = 0 [pid 7130] <... write resumed>) = 2097152 [pid 7129] <... write resumed>) = 2097152 [pid 7127] <... mkdir resumed>) = 0 [ 184.671941][ T7126] NILFS (loop5): invalid segment: Checksum error in segment payload [ 184.680372][ T7127] loop4: detected capacity change from 0 to 4096 [ 184.703133][ T7128] NILFS (loop1): invalid segment: Checksum error in segment payload [ 184.706282][ T7126] NILFS (loop5): trying rollback from an earlier position [pid 7125] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7130] munmap(0x7f46b9f9b000, 2097152 [pid 7129] munmap(0x7f46b9f9b000, 2097152 [pid 7127] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7130] <... munmap resumed>) = 0 [pid 7129] <... munmap resumed>) = 0 [pid 7130] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7129] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7130] <... openat resumed>) = 4 [pid 7129] <... openat resumed>) = 4 [pid 7130] ioctl(4, LOOP_SET_FD, 3 [pid 7129] ioctl(4, LOOP_SET_FD, 3 [pid 7128] <... mount resumed>) = 0 [pid 7128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7128] chdir("./file0") = 0 [pid 7128] ioctl(4, LOOP_CLR_FD) = 0 [pid 7128] close(4) = 0 [ 184.725243][ T7128] NILFS (loop1): trying rollback from an earlier position [ 184.741101][ T7128] NILFS (loop1): recovery complete [ 184.742748][ T7130] loop2: detected capacity change from 0 to 4096 [ 184.749203][ T7126] NILFS (loop5): recovery complete [ 184.760384][ T7132] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7128] creat("./bus", 000 [pid 7130] <... ioctl resumed>) = 0 [pid 7130] close(3) = 0 [pid 7130] mkdir("./file0", 0777) = 0 [pid 7130] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7129] <... ioctl resumed>) = 0 [pid 7125] <... pwritev2 resumed>) = 65007 [pid 7125] exit_group(0) = ? [pid 7128] <... creat resumed>) = 4 [pid 7128] unlink("./bus" [pid 7126] <... mount resumed>) = 0 [pid 7129] close(3 [pid 7126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7125] +++ exited with 0 +++ [pid 7128] <... unlink resumed>) = 0 [pid 7129] <... close resumed>) = 0 [pid 7129] mkdir("./file0", 0777 [pid 7128] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7126] <... openat resumed>) = 3 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7125, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [ 184.760875][ T7127] NILFS (loop4): invalid segment: Checksum error in segment payload [ 184.780362][ T7129] loop0: detected capacity change from 0 to 4096 [ 184.784796][ T7127] NILFS (loop4): trying rollback from an earlier position [ 184.799205][ T7133] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.810007][ T7130] NILFS (loop2): invalid segment: Checksum error in segment payload [ 184.810032][ T7130] NILFS (loop2): trying rollback from an earlier position [pid 7129] <... mkdir resumed>) = 0 [pid 7126] chdir("./file0" [pid 7129] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7126] <... chdir resumed>) = 0 [pid 7126] ioctl(4, LOOP_CLR_FD) = 0 [pid 7126] close(4) = 0 [pid 7126] creat("./bus", 000 [pid 7128] <... pwritev2 resumed>) = 65007 [pid 7130] <... mount resumed>) = 0 [pid 7128] exit_group(0 [pid 4996] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7128] <... exit_group resumed>) = ? [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7130] <... openat resumed>) = 3 [pid 7130] chdir("./file0" [pid 4996] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7130] <... chdir resumed>) = 0 [pid 7130] ioctl(4, LOOP_CLR_FD [pid 4996] <... openat resumed>) = 3 [pid 7130] <... ioctl resumed>) = 0 [pid 4996] fstat(3, [pid 7130] close(4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7130] <... close resumed>) = 0 [ 184.834304][ T7130] NILFS (loop2): recovery complete [ 184.841076][ T7127] NILFS (loop4): recovery complete [ 184.848928][ T7134] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.852512][ T7129] NILFS (loop0): invalid segment: Checksum error in segment payload [ 184.868936][ T7129] NILFS (loop0): trying rollback from an earlier position [pid 4996] getdents64(3, [pid 7130] creat("./bus", 000 [pid 7126] <... creat resumed>) = 4 [pid 7126] unlink("./bus" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./177/binderfs", [pid 7126] <... unlink resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7126] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7128] +++ exited with 0 +++ [pid 4996] unlink("./177/binderfs") = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7128, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 7127] <... mount resumed>) = 0 [pid 7130] <... creat resumed>) = 4 [pid 4996] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7127] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7130] unlink("./bus" [pid 7127] chdir("./file0" [pid 4994] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7127] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7130] <... unlink resumed>) = 0 [pid 7127] ioctl(4, LOOP_CLR_FD [pid 4994] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7130] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7127] <... ioctl resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7127] close(4) = 0 [pid 7127] creat("./bus", 000 [pid 4994] fstat(3, [pid 7126] <... pwritev2 resumed>) = 65007 [pid 7126] exit_group(0) = ? [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [ 184.890812][ T7135] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 184.922653][ T7129] NILFS (loop0): recovery complete [pid 4994] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7126] +++ exited with 0 +++ [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7126, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4998] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./177/binderfs") = 0 [pid 4998] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7127] <... creat resumed>) = 4 [pid 4994] lstat("./176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7127] unlink("./bus" [pid 4994] unlink("./176/binderfs" [pid 7127] <... unlink resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 7130] <... pwritev2 resumed>) = 65007 [pid 7129] <... mount resumed>) = 0 [pid 7127] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4994] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7130] exit_group(0 [pid 7129] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7130] <... exit_group resumed>) = ? [pid 7129] <... openat resumed>) = 3 [pid 4996] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7129] chdir("./file0" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7129] <... chdir resumed>) = 0 [pid 4996] lstat("./177/file0", [pid 7130] +++ exited with 0 +++ [pid 7129] ioctl(4, LOOP_CLR_FD [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7130, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7129] <... ioctl resumed>) = 0 [pid 4996] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7129] close(4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 7129] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7129] creat("./bus", 000 [pid 4996] <... openat resumed>) = 4 [pid 4996] fstat(4, [pid 4995] getdents64(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7129] <... creat resumed>) = 4 [pid 4996] getdents64(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./173/binderfs") = 0 [pid 4995] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7129] unlink("./bus" [pid 7127] <... pwritev2 resumed>) = 65007 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 184.940348][ T7136] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] <... umount2 resumed>) = 0 [pid 4996] close(4) = 0 [pid 4998] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7127] exit_group(0 [pid 4996] rmdir("./177/file0" [pid 7129] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7127] <... exit_group resumed>) = ? [pid 4996] <... rmdir resumed>) = 0 [pid 7129] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./177/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./177") = 0 [pid 4998] mkdir("./178", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] getdents64(3, [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7127] +++ exited with 0 +++ [pid 4996] close(3 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7127, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./177" [pid 4997] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7129] <... pwritev2 resumed>) = 65007 [pid 4996] mkdir("./178", 0777 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7137 [pid 4997] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7137 attached [pid 4996] <... mkdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7137] chdir("./178" [pid 4997] fstat(3, [pid 4996] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7137] <... chdir resumed>) = 0 [pid 7137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4997] getdents64(3, [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./177/binderfs", [pid 4996] <... close resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] unlink("./177/binderfs" [pid 7137] setpgid(0, 0 [pid 4997] <... unlink resumed>) = 0 [pid 7137] <... setpgid resumed>) = 0 [pid 7137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7129] exit_group(0 [pid 7137] <... openat resumed>) = 3 [pid 7137] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 7138 attached [pid 7137] close(3 [pid 7129] <... exit_group resumed>) = ? [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7138 [pid 4994] <... umount2 resumed>) = 0 [pid 7137] <... close resumed>) = 0 [pid 4994] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7138] chdir("./178" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7138] <... chdir resumed>) = 0 [pid 7138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7137] symlink("/dev/binderfs", "./binderfs" [pid 4994] lstat("./176/file0", [pid 7138] setpgid(0, 0) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... openat resumed>) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 7138] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7138] write(3, "1000", 4 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7138] <... write resumed>) = 4 [pid 4994] close(4 [pid 7138] close(3) = 0 [pid 7138] symlink("/dev/binderfs", "./binderfs" [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./176/file0" [pid 7138] <... symlink resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3 [pid 7137] <... symlink resumed>) = 0 [pid 7138] memfd_create("syzkaller", 0 [pid 4994] <... close resumed>) = 0 [pid 7138] <... memfd_create resumed>) = 3 [pid 4994] rmdir("./176" [pid 7138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7137] memfd_create("syzkaller", 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./177", 0777 [pid 7137] <... memfd_create resumed>) = 3 [pid 7129] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7129, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... mkdir resumed>) = 0 [pid 7137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... restart_syscall resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] <... umount2 resumed>) = 0 [pid 4993] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... openat resumed>) = 3 [pid 7137] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] fstat(3, [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] close(3 [pid 4997] lstat("./177/file0", [pid 4993] getdents64(3, [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./177/binderfs", [pid 4994] <... close resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... openat resumed>) = 4 [pid 4993] unlink("./177/binderfs" [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./177/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./177") = 0 [pid 4997] mkdir("./178", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7139 ./strace-static-x86_64: Process 7139 attached [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7139] chdir("./177") = 0 [pid 7139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7140 [pid 7139] <... prctl resumed>) = 0 [pid 7139] setpgid(0, 0 [pid 7138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7139] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 7140 attached [pid 7139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7140] chdir("./178") = 0 [pid 7139] write(3, "1000", 4 [pid 4995] <... umount2 resumed>) = 0 [pid 7139] <... write resumed>) = 4 [pid 4995] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7139] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7140] <... prctl resumed>) = 0 [pid 7140] setpgid(0, 0) = 0 [pid 7139] <... close resumed>) = 0 [pid 4995] lstat("./173/file0", [pid 7139] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7139] <... symlink resumed>) = 0 [pid 7139] memfd_create("syzkaller", 0 [pid 7140] <... openat resumed>) = 3 [pid 7139] <... memfd_create resumed>) = 3 [pid 4995] umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7140] write(3, "1000", 4 [pid 7139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7140] <... write resumed>) = 4 [pid 7140] close(3 [pid 7139] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7140] <... close resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7140] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7140] memfd_create("syzkaller", 0) = 3 [pid 7140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7140] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... openat resumed>) = 4 [pid 4995] fstat(4, [pid 7137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(4, [pid 4993] lstat("./177/file0", [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] close(4 [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./173/file0" [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] getdents64(4, [pid 4995] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 4995] close(3 [pid 4993] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4993] rmdir("./177/file0" [pid 4995] rmdir("./173" [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] rmdir("./177" [pid 4995] mkdir("./174", 0777 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./178", 0777 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4993] close(3 [pid 7140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7141 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7142 ./strace-static-x86_64: Process 7142 attached [pid 7142] chdir("./178") = 0 [pid 7142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7142] setpgid(0, 0./strace-static-x86_64: Process 7141 attached ) = 0 [pid 7141] chdir("./174" [pid 7142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7141] <... chdir resumed>) = 0 [pid 7141] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7142] write(3, "1000", 4 [pid 7137] <... write resumed>) = 2097152 [pid 7142] <... write resumed>) = 4 [pid 7141] <... prctl resumed>) = 0 [pid 7142] close(3 [pid 7141] setpgid(0, 0 [pid 7142] <... close resumed>) = 0 [pid 7141] <... setpgid resumed>) = 0 [pid 7142] symlink("/dev/binderfs", "./binderfs" [pid 7138] <... write resumed>) = 2097152 [pid 7141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7142] <... symlink resumed>) = 0 [pid 7138] munmap(0x7f46b9f9b000, 2097152 [pid 7141] <... openat resumed>) = 3 [pid 7142] memfd_create("syzkaller", 0 [pid 7138] <... munmap resumed>) = 0 [pid 7141] write(3, "1000", 4 [pid 7142] <... memfd_create resumed>) = 3 [pid 7141] <... write resumed>) = 4 [pid 7142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7138] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7141] close(3 [pid 7142] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7138] <... openat resumed>) = 4 [pid 7141] <... close resumed>) = 0 [pid 7138] ioctl(4, LOOP_SET_FD, 3 [pid 7141] symlink("/dev/binderfs", "./binderfs" [pid 7139] <... write resumed>) = 2097152 [pid 7137] munmap(0x7f46b9f9b000, 2097152 [pid 7141] <... symlink resumed>) = 0 [pid 7137] <... munmap resumed>) = 0 [pid 7139] munmap(0x7f46b9f9b000, 2097152 [pid 7141] memfd_create("syzkaller", 0 [pid 7138] <... ioctl resumed>) = 0 [pid 7138] close(3) = 0 [pid 7138] mkdir("./file0", 0777 [pid 7139] <... munmap resumed>) = 0 [pid 7141] <... memfd_create resumed>) = 3 [pid 7139] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7137] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7137] <... openat resumed>) = 4 [pid 7141] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7139] <... openat resumed>) = 4 [pid 7138] <... mkdir resumed>) = 0 [pid 7138] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7137] ioctl(4, LOOP_SET_FD, 3 [pid 7139] ioctl(4, LOOP_SET_FD, 3 [pid 7137] <... ioctl resumed>) = 0 [pid 7142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7139] <... ioctl resumed>) = 0 [pid 7137] close(3 [pid 7139] close(3 [pid 7137] <... close resumed>) = 0 [pid 7139] <... close resumed>) = 0 [pid 7137] mkdir("./file0", 0777 [pid 7140] <... write resumed>) = 2097152 [pid 7139] mkdir("./file0", 0777 [pid 7137] <... mkdir resumed>) = 0 [pid 7139] <... mkdir resumed>) = 0 [pid 7137] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7140] munmap(0x7f46b9f9b000, 2097152 [ 185.222745][ T7138] loop3: detected capacity change from 0 to 4096 [ 185.245478][ T7137] loop5: detected capacity change from 0 to 4096 [ 185.252226][ T7139] loop1: detected capacity change from 0 to 4096 [pid 7139] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7140] <... munmap resumed>) = 0 [pid 7140] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 185.280568][ T7138] NILFS (loop3): invalid segment: Checksum error in segment payload [ 185.295579][ T7139] NILFS (loop1): invalid segment: Checksum error in segment payload [ 185.303611][ T7139] NILFS (loop1): trying rollback from an earlier position [ 185.305979][ T7140] loop4: detected capacity change from 0 to 4096 [ 185.311543][ T7137] NILFS (loop5): invalid segment: Checksum error in segment payload [ 185.327539][ T7138] NILFS (loop3): trying rollback from an earlier position [pid 7140] ioctl(4, LOOP_SET_FD, 3 [pid 7142] <... write resumed>) = 2097152 [pid 7141] <... write resumed>) = 2097152 [pid 7140] <... ioctl resumed>) = 0 [pid 7142] munmap(0x7f46b9f9b000, 2097152 [pid 7140] close(3) = 0 [pid 7140] mkdir("./file0", 0777 [pid 7142] <... munmap resumed>) = 0 [pid 7140] <... mkdir resumed>) = 0 [pid 7142] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7140] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7142] <... openat resumed>) = 4 [pid 7141] munmap(0x7f46b9f9b000, 2097152 [ 185.380031][ T7137] NILFS (loop5): trying rollback from an earlier position [ 185.411429][ T7142] loop0: detected capacity change from 0 to 4096 [pid 7142] ioctl(4, LOOP_SET_FD, 3 [pid 7141] <... munmap resumed>) = 0 [pid 7141] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 7141] ioctl(4, LOOP_SET_FD, 3 [pid 7139] <... mount resumed>) = 0 [pid 7139] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7139] chdir("./file0") = 0 [pid 7139] ioctl(4, LOOP_CLR_FD) = 0 [pid 7139] close(4) = 0 [ 185.427871][ T7139] NILFS (loop1): recovery complete [ 185.447152][ T7137] NILFS (loop5): recovery complete [ 185.448628][ T7140] NILFS (loop4): invalid segment: Checksum error in segment payload [ 185.452777][ T7141] loop2: detected capacity change from 0 to 4096 [ 185.468462][ T7143] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7139] creat("./bus", 000 [pid 7142] <... ioctl resumed>) = 0 [pid 7142] close(3) = 0 [pid 7142] mkdir("./file0", 0777) = 0 [pid 7142] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7141] <... ioctl resumed>) = 0 [pid 7137] <... mount resumed>) = 0 [pid 7141] close(3 [pid 7137] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7141] <... close resumed>) = 0 [pid 7137] <... openat resumed>) = 3 [pid 7141] mkdir("./file0", 0777 [pid 7139] <... creat resumed>) = 4 [pid 7137] chdir("./file0" [pid 7139] unlink("./bus" [pid 7141] <... mkdir resumed>) = 0 [pid 7137] <... chdir resumed>) = 0 [pid 7141] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7137] ioctl(4, LOOP_CLR_FD) = 0 [pid 7137] close(4) = 0 [pid 7137] creat("./bus", 000 [pid 7139] <... unlink resumed>) = 0 [ 185.473408][ T7138] NILFS (loop3): recovery complete [ 185.483529][ T7144] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.499238][ T7140] NILFS (loop4): trying rollback from an earlier position [ 185.509008][ T7142] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7139] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7137] <... creat resumed>) = 4 [pid 7137] unlink("./bus") = 0 [ 185.525826][ T7141] NILFS (loop2): invalid segment: Checksum error in segment payload [ 185.535758][ T7140] NILFS (loop4): recovery complete [ 185.541814][ T7141] NILFS (loop2): trying rollback from an earlier position [ 185.549033][ T7142] NILFS (loop0): trying rollback from an earlier position [ 185.569945][ T7145] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7137] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7139] <... pwritev2 resumed>) = 65007 [pid 7140] <... mount resumed>) = 0 [pid 7139] exit_group(0 [pid 7138] <... mount resumed>) = 0 [pid 7140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7139] <... exit_group resumed>) = ? [pid 7138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7140] <... openat resumed>) = 3 [pid 7138] <... openat resumed>) = 3 [pid 7137] <... pwritev2 resumed>) = 65007 [pid 7140] chdir("./file0" [pid 7138] chdir("./file0" [pid 7140] <... chdir resumed>) = 0 [pid 7138] <... chdir resumed>) = 0 [pid 7140] ioctl(4, LOOP_CLR_FD [pid 7138] ioctl(4, LOOP_CLR_FD [pid 7140] <... ioctl resumed>) = 0 [pid 7138] <... ioctl resumed>) = 0 [pid 7140] close(4 [pid 7138] close(4 [pid 7137] exit_group(0 [pid 7140] <... close resumed>) = 0 [pid 7138] <... close resumed>) = 0 [pid 7140] creat("./bus", 000 [pid 7138] creat("./bus", 000 [pid 7137] <... exit_group resumed>) = ? [pid 7139] +++ exited with 0 +++ [pid 7140] <... creat resumed>) = 4 [ 185.573029][ T7146] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.612994][ T7141] NILFS (loop2): recovery complete [ 185.620074][ T7142] NILFS (loop0): recovery complete [pid 7138] <... creat resumed>) = 4 [pid 7137] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7139, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=3 /* 0.03 s */} --- [pid 4994] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./177/binderfs") = 0 [pid 4994] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7140] unlink("./bus" [pid 7138] unlink("./bus" [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7137, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7141] <... mount resumed>) = 0 [pid 7140] <... unlink resumed>) = 0 [pid 7138] <... unlink resumed>) = 0 [pid 4998] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7141] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7140] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7138] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7141] <... openat resumed>) = 3 [pid 7142] <... mount resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 7142] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 7142] chdir("./file0" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7142] <... chdir resumed>) = 0 [pid 4998] getdents64(3, [pid 7142] ioctl(4, LOOP_CLR_FD [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7142] <... ioctl resumed>) = 0 [pid 4998] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7142] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7141] chdir("./file0" [pid 7142] <... close resumed>) = 0 [pid 4998] lstat("./178/binderfs", [pid 7142] creat("./bus", 000 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./178/binderfs") = 0 [pid 4998] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7141] <... chdir resumed>) = 0 [pid 7141] ioctl(4, LOOP_CLR_FD [pid 7138] <... pwritev2 resumed>) = 65007 [pid 7141] <... ioctl resumed>) = 0 [pid 7140] <... pwritev2 resumed>) = 65007 [pid 7138] exit_group(0 [pid 7141] close(4 [pid 7140] exit_group(0 [pid 7138] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7141] <... close resumed>) = 0 [pid 7140] <... exit_group resumed>) = ? [pid 7141] creat("./bus", 000 [pid 4994] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7141] <... creat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 185.634301][ T7147] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 185.667353][ T7148] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7141] unlink("./bus" [pid 4994] lstat("./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7141] <... unlink resumed>) = 0 [pid 7141] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7140] +++ exited with 0 +++ [pid 7138] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7140, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=6 /* 0.06 s */} --- [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7138, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... openat resumed>) = 3 [pid 4994] getdents64(4, [pid 4997] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] fstat(3, [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] close(4 [pid 7142] <... creat resumed>) = 4 [pid 7141] <... pwritev2 resumed>) = 65007 [pid 4998] lstat("./178/file0", [pid 4997] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 7141] exit_group(0 [pid 7142] unlink("./bus" [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] rmdir("./177/file0" [pid 7141] <... exit_group resumed>) = ? [pid 4997] lstat("./178/binderfs", [pid 4996] lstat("./178/binderfs", [pid 4994] <... rmdir resumed>) = 0 [pid 7142] <... unlink resumed>) = 0 [pid 4998] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] getdents64(3, [pid 7142] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] unlink("./178/binderfs" [pid 4996] unlink("./178/binderfs" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4994] close(3 [pid 4997] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] rmdir("./177" [pid 4998] <... openat resumed>) = 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./178", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4998] fstat(4, [pid 7141] +++ exited with 0 +++ [pid 7142] <... pwritev2 resumed>) = 65007 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7142] exit_group(0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7142] <... exit_group resumed>) = ? [pid 4998] getdents64(4, [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7141, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7149 [pid 4998] close(4) = 0 [pid 4995] umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7149 attached [pid 4998] rmdir("./178/file0" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7149] chdir("./178" [pid 4998] getdents64(3, [pid 4995] <... openat resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] fstat(3, [pid 4998] close(3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7149] <... chdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] getdents64(3, [pid 7149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] rmdir("./178" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7149] <... prctl resumed>) = 0 [pid 7142] +++ exited with 0 +++ [pid 4998] <... rmdir resumed>) = 0 [pid 4995] umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7149] setpgid(0, 0 [pid 4998] mkdir("./179", 0777 [pid 4997] lstat("./178/file0", [pid 4996] lstat("./178/file0", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7149] <... setpgid resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] lstat("./174/binderfs", [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7142, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... openat resumed>) = 3 [pid 4997] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] unlink("./174/binderfs" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7149] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7149] write(3, "1000", 4 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... unlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7149] <... write resumed>) = 4 [pid 4998] close(3 [pid 4997] <... openat resumed>) = 4 [pid 4996] <... openat resumed>) = 4 [pid 4995] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7149] close(3 [pid 4998] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 4996] fstat(4, [pid 4993] <... openat resumed>) = 3 [pid 7149] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(3, [pid 7149] symlink("/dev/binderfs", "./binderfs" [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7150 [pid 4993] getdents64(3, [pid 7149] <... symlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7149] memfd_create("syzkaller", 0 [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7149] <... memfd_create resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] lstat("./178/binderfs", ./strace-static-x86_64: Process 7150 attached [pid 7149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] close(4 [pid 4996] close(4 [pid 7149] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] rmdir("./178/file0" [pid 4996] rmdir("./178/file0" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] unlink("./178/binderfs" [pid 7150] chdir("./179" [pid 4997] getdents64(3, [pid 4996] getdents64(3, [pid 4995] <... umount2 resumed>) = 0 [pid 7150] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 7150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] close(3 [pid 4996] close(3 [pid 7150] <... prctl resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7150] setpgid(0, 0 [pid 4997] rmdir("./178" [pid 4996] rmdir("./178" [pid 7150] <... setpgid resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] mkdir("./179", 0777 [pid 4996] mkdir("./179", 0777 [pid 7150] <... openat resumed>) = 3 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4995] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7150] write(3, "1000", 4 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7150] <... write resumed>) = 4 [pid 4997] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4995] lstat("./174/file0", [pid 4993] <... umount2 resumed>) = 0 [pid 7150] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7150] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7150] symlink("/dev/binderfs", "./binderfs" [pid 4997] close(3 [pid 4996] close(3 [pid 7150] <... symlink resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4995] umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7150] memfd_create("syzkaller", 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7150] <... memfd_create resumed>) = 3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7151 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7152 [pid 7150] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7152 attached [pid 7149] <... write resumed>) = 2097152 [pid 7152] chdir("./179" [pid 7149] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... openat resumed>) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7152] <... chdir resumed>) = 0 [pid 7149] <... munmap resumed>) = 0 [pid 4995] getdents64(4, ./strace-static-x86_64: Process 7151 attached [pid 7152] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7149] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7152] <... prctl resumed>) = 0 [pid 7151] chdir("./179" [pid 7149] <... openat resumed>) = 4 [pid 7152] setpgid(0, 0 [pid 7151] <... chdir resumed>) = 0 [pid 7149] ioctl(4, LOOP_SET_FD, 3 [pid 4995] getdents64(4, [pid 7152] <... setpgid resumed>) = 0 [pid 7151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7151] setpgid(0, 0) = 0 [pid 7151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7151] write(3, "1000", 4 [pid 7152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7151] <... write resumed>) = 4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7152] <... openat resumed>) = 3 [pid 7151] close(3 [pid 4995] close(4 [pid 7152] write(3, "1000", 4 [pid 7151] <... close resumed>) = 0 [pid 7149] <... ioctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7152] <... write resumed>) = 4 [pid 7151] symlink("/dev/binderfs", "./binderfs" [pid 7149] close(3 [pid 4993] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./174/file0" [pid 7152] close(3 [pid 7151] <... symlink resumed>) = 0 [pid 7149] <... close resumed>) = 0 [pid 7151] memfd_create("syzkaller", 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7151] <... memfd_create resumed>) = 3 [pid 7151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] lstat("./178/file0", [pid 7151] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7152] <... close resumed>) = 0 [pid 7149] mkdir("./file0", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7152] symlink("/dev/binderfs", "./binderfs" [pid 4995] getdents64(3, [pid 7152] <... symlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7152] memfd_create("syzkaller", 0 [pid 7150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7149] <... mkdir resumed>) = 0 [pid 4995] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7152] <... memfd_create resumed>) = 3 [pid 7149] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 7152] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] rmdir("./174" [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [ 185.937770][ T7149] loop1: detected capacity change from 0 to 4096 [pid 4993] rmdir("./178/file0" [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./178" [pid 4995] mkdir("./175", 0777 [pid 4993] <... rmdir resumed>) = 0 [pid 4993] mkdir("./179", 0777 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] <... openat resumed>) = 3 [pid 4993] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 4993] close(3 [pid 4995] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7153 ./strace-static-x86_64: Process 7153 attached [pid 7153] chdir("./179") = 0 [pid 7153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7153] setpgid(0, 0) = 0 [pid 7153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7153] write(3, "1000", 4) = 4 [pid 7153] close(3) = 0 [pid 7153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7153] memfd_create("syzkaller", 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7153] <... memfd_create resumed>) = 3 [pid 7153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7154 ./strace-static-x86_64: Process 7154 attached [ 185.979182][ T7149] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7154] chdir("./175") = 0 [pid 7154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7154] setpgid(0, 0) = 0 [pid 7154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7154] write(3, "1000", 4) = 4 [pid 7154] close(3 [pid 7152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7154] <... close resumed>) = 0 [pid 7154] symlink("/dev/binderfs", "./binderfs" [pid 7150] <... write resumed>) = 2097152 [pid 7154] <... symlink resumed>) = 0 [pid 7150] munmap(0x7f46b9f9b000, 2097152 [pid 7154] memfd_create("syzkaller", 0 [pid 7150] <... munmap resumed>) = 0 [pid 7154] <... memfd_create resumed>) = 3 [pid 7154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7150] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7150] ioctl(4, LOOP_SET_FD, 3 [pid 7153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7150] <... ioctl resumed>) = 0 [ 186.019795][ T7149] NILFS (loop1): trying rollback from an earlier position [ 186.053105][ T7150] loop5: detected capacity change from 0 to 4096 [pid 7150] close(3 [pid 7154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7151] <... write resumed>) = 2097152 [pid 7150] <... close resumed>) = 0 [pid 7150] mkdir("./file0", 0777) = 0 [pid 7152] <... write resumed>) = 2097152 [pid 7151] munmap(0x7f46b9f9b000, 2097152 [pid 7150] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7152] munmap(0x7f46b9f9b000, 2097152 [pid 7151] <... munmap resumed>) = 0 [pid 7151] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7151] ioctl(4, LOOP_SET_FD, 3 [pid 7153] <... write resumed>) = 2097152 [pid 7152] <... munmap resumed>) = 0 [pid 7151] <... ioctl resumed>) = 0 [pid 7149] <... mount resumed>) = 0 [pid 7152] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7151] close(3 [pid 7149] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7152] <... openat resumed>) = 4 [pid 7154] <... write resumed>) = 2097152 [pid 7153] munmap(0x7f46b9f9b000, 2097152 [pid 7152] ioctl(4, LOOP_SET_FD, 3 [pid 7151] <... close resumed>) = 0 [pid 7149] <... openat resumed>) = 3 [ 186.087308][ T7149] NILFS (loop1): recovery complete [ 186.100944][ T7151] loop4: detected capacity change from 0 to 4096 [ 186.107902][ T7150] NILFS (loop5): invalid segment: Checksum error in segment payload [ 186.116069][ T7155] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 186.128158][ T7150] NILFS (loop5): trying rollback from an earlier position [pid 7154] munmap(0x7f46b9f9b000, 2097152 [pid 7153] <... munmap resumed>) = 0 [pid 7151] mkdir("./file0", 0777 [pid 7149] chdir("./file0" [pid 7151] <... mkdir resumed>) = 0 [pid 7149] <... chdir resumed>) = 0 [pid 7151] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7149] ioctl(4, LOOP_CLR_FD) = 0 [pid 7153] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7149] close(4 [pid 7152] <... ioctl resumed>) = 0 [pid 7149] <... close resumed>) = 0 [pid 7149] creat("./bus", 000 [pid 7153] <... openat resumed>) = 4 [pid 7153] ioctl(4, LOOP_SET_FD, 3 [pid 7154] <... munmap resumed>) = 0 [pid 7153] <... ioctl resumed>) = 0 [pid 7152] close(3 [pid 7154] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7153] close(3 [pid 7152] <... close resumed>) = 0 [pid 7152] mkdir("./file0", 0777 [pid 7154] <... openat resumed>) = 4 [pid 7153] <... close resumed>) = 0 [pid 7152] <... mkdir resumed>) = 0 [pid 7153] mkdir("./file0", 0777 [ 186.132769][ T7152] loop3: detected capacity change from 0 to 4096 [ 186.155469][ T7151] NILFS (loop4): invalid segment: Checksum error in segment payload [ 186.164800][ T7153] loop0: detected capacity change from 0 to 4096 [ 186.169903][ T7150] NILFS (loop5): recovery complete [ 186.175255][ T7151] NILFS (loop4): trying rollback from an earlier position [pid 7154] ioctl(4, LOOP_SET_FD, 3 [pid 7153] <... mkdir resumed>) = 0 [pid 7149] <... creat resumed>) = 4 [pid 7149] unlink("./bus") = 0 [pid 7149] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7153] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7152] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7154] <... ioctl resumed>) = 0 [pid 7154] close(3) = 0 [ 186.188485][ T7154] loop2: detected capacity change from 0 to 4096 [ 186.205584][ T7152] NILFS (loop3): invalid segment: Checksum error in segment payload [ 186.207214][ T7153] NILFS (loop0): invalid segment: Checksum error in segment payload [ 186.213589][ T7152] NILFS (loop3): trying rollback from an earlier position [ 186.225172][ T7151] NILFS (loop4): recovery complete [pid 7154] mkdir("./file0", 0777 [pid 7150] <... mount resumed>) = 0 [pid 7154] <... mkdir resumed>) = 0 [pid 7154] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7151] <... mount resumed>) = 0 [pid 7150] chdir("./file0" [pid 7151] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7150] <... chdir resumed>) = 0 [pid 7151] <... openat resumed>) = 3 [pid 7150] ioctl(4, LOOP_CLR_FD [pid 7151] chdir("./file0" [pid 7150] <... ioctl resumed>) = 0 [pid 7151] <... chdir resumed>) = 0 [pid 7150] close(4 [pid 7151] ioctl(4, LOOP_CLR_FD [pid 7150] <... close resumed>) = 0 [pid 7151] <... ioctl resumed>) = 0 [pid 7150] creat("./bus", 000 [pid 7151] close(4) = 0 [pid 7151] creat("./bus", 000 [pid 7149] <... pwritev2 resumed>) = 65007 [pid 7149] exit_group(0) = ? [ 186.231078][ T7156] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 186.235690][ T7153] NILFS (loop0): trying rollback from an earlier position [ 186.253982][ T7157] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 186.264212][ T7154] NILFS (loop2): invalid segment: Checksum error in segment payload [ 186.277245][ T7154] NILFS (loop2): trying rollback from an earlier position [pid 7150] <... creat resumed>) = 4 [pid 7151] <... creat resumed>) = 4 [pid 7151] unlink("./bus" [pid 7150] unlink("./bus") = 0 [pid 7151] <... unlink resumed>) = 0 [pid 7150] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7151] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7149] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7149, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [ 186.298181][ T7153] NILFS (loop0): recovery complete [ 186.299001][ T7152] NILFS (loop3): recovery complete [ 186.333930][ T7158] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7153] <... mount resumed>) = 0 [pid 7153] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7151] <... pwritev2 resumed>) = 65007 [pid 7150] <... pwritev2 resumed>) = 65007 [pid 4994] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, [pid 7153] <... openat resumed>) = 3 [pid 7151] exit_group(0 [pid 7150] exit_group(0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7153] chdir("./file0" [pid 7151] <... exit_group resumed>) = ? [pid 7150] <... exit_group resumed>) = ? [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./178/binderfs", [pid 7153] <... chdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7153] ioctl(4, LOOP_CLR_FD [pid 7152] <... mount resumed>) = 0 [pid 4994] unlink("./178/binderfs" [pid 7153] <... ioctl resumed>) = 0 [pid 7152] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7153] close(4 [pid 7152] <... openat resumed>) = 3 [pid 7151] +++ exited with 0 +++ [pid 7150] +++ exited with 0 +++ [pid 4994] <... unlink resumed>) = 0 [pid 7153] <... close resumed>) = 0 [pid 7152] chdir("./file0" [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7151, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7153] creat("./bus", 000 [pid 7152] <... chdir resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7150, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 7152] ioctl(4, LOOP_CLR_FD [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 7152] <... ioctl resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 7152] close(4 [pid 4997] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7152] <... close resumed>) = 0 [pid 7152] creat("./bus", 000 [pid 4998] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, [pid 7153] <... creat resumed>) = 4 [pid 4997] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7153] unlink("./bus" [pid 4998] getdents64(3, [pid 4997] <... openat resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./179/binderfs") = 0 [pid 4998] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7153] <... unlink resumed>) = 0 [pid 4997] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7153] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./179/binderfs", [pid 7152] <... creat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7152] unlink("./bus" [ 186.334566][ T7154] NILFS (loop2): recovery complete [ 186.357167][ T7159] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] unlink("./179/binderfs") = 0 [pid 7154] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 7154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7154] chdir("./file0" [pid 4997] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7154] <... chdir resumed>) = 0 [pid 7154] ioctl(4, LOOP_CLR_FD [pid 7153] <... pwritev2 resumed>) = 65007 [pid 7154] <... ioctl resumed>) = 0 [pid 7152] <... unlink resumed>) = 0 [pid 7154] close(4 [pid 7152] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7154] <... close resumed>) = 0 [pid 7153] exit_group(0 [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7154] creat("./bus", 000 [pid 7153] <... exit_group resumed>) = ? [pid 4997] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./179/file0", [pid 4994] lstat("./178/file0", [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7153] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 4 [pid 4994] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7153, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4993] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] fstat(4, [pid 4993] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7152] <... pwritev2 resumed>) = 65007 [pid 4997] getdents64(4, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 7152] exit_group(0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] getdents64(4, [pid 4993] fstat(3, [pid 7152] <... exit_group resumed>) = ? [pid 4997] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7154] <... creat resumed>) = 4 [pid 4998] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 4993] getdents64(3, [pid 7154] unlink("./bus" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] rmdir("./179/file0" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7154] <... unlink resumed>) = 0 [pid 4998] lstat("./179/file0", [pid 4997] <... rmdir resumed>) = 0 [ 186.412873][ T7160] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] close(4 [pid 4993] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7154] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7152] +++ exited with 0 +++ [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4994] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] rmdir("./178/file0" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(3 [pid 4994] <... rmdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4998] <... openat resumed>) = 4 [pid 4997] rmdir("./179" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] fstat(4, [pid 4997] <... rmdir resumed>) = 0 [pid 4994] close(3 [pid 4993] lstat("./179/binderfs", [pid 7154] <... pwritev2 resumed>) = 65007 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] mkdir("./180", 0777 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7152, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] <... close resumed>) = 0 [pid 7154] exit_group(0 [pid 4998] getdents64(4, [pid 4997] <... mkdir resumed>) = 0 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4994] rmdir("./178" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7154] <... exit_group resumed>) = ? [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... restart_syscall resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] unlink("./179/binderfs" [pid 4998] getdents64(4, [pid 4997] <... openat resumed>) = 3 [pid 4994] mkdir("./179", 0777 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] <... mkdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4998] close(4 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 3 [pid 4998] rmdir("./179/file0" [pid 4997] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4998] <... rmdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] getdents64(3, [pid 4994] close(3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7161 [pid 4994] <... close resumed>) = 0 [pid 4998] close(3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4998] rmdir("./179" [pid 4996] fstat(3, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7162 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] mkdir("./180", 0777 [pid 4996] getdents64(3, [pid 4998] <... mkdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7163 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 ./strace-static-x86_64: Process 7162 attached ./strace-static-x86_64: Process 7161 attached [pid 4996] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7162] chdir("./179" [pid 7161] chdir("./180" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7162] <... chdir resumed>) = 0 [pid 7161] <... chdir resumed>) = 0 [pid 4996] lstat("./179/binderfs", [pid 7162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7162] <... prctl resumed>) = 0 [pid 7161] <... prctl resumed>) = 0 [pid 4996] unlink("./179/binderfs" [pid 7162] setpgid(0, 0 [pid 7161] setpgid(0, 0 [pid 7162] <... setpgid resumed>) = 0 [pid 7161] <... setpgid resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 7162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7162] <... openat resumed>) = 3 [pid 7161] <... openat resumed>) = 3 [pid 7162] write(3, "1000", 4 [pid 7161] write(3, "1000", 4 [pid 7162] <... write resumed>) = 4 [pid 7161] <... write resumed>) = 4 [pid 7162] close(3 [pid 7161] close(3 [pid 7162] <... close resumed>) = 0 [pid 7161] <... close resumed>) = 0 [pid 7162] symlink("/dev/binderfs", "./binderfs" [pid 7161] symlink("/dev/binderfs", "./binderfs" [pid 7162] <... symlink resumed>) = 0 [pid 7161] <... symlink resumed>) = 0 [pid 7162] memfd_create("syzkaller", 0 [pid 7161] memfd_create("syzkaller", 0 [pid 7162] <... memfd_create resumed>) = 3 [pid 7161] <... memfd_create resumed>) = 3 [pid 7162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7162] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7161] <... mmap resumed>) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 7163 attached [pid 7154] +++ exited with 0 +++ [pid 4996] <... umount2 resumed>) = 0 [pid 7163] chdir("./180" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7154, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7163] <... chdir resumed>) = 0 [pid 7163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7163] setpgid(0, 0 [pid 4995] umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7163] <... setpgid resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7163] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 7163] write(3, "1000", 4 [pid 4996] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(3, [pid 4993] <... umount2 resumed>) = 0 [pid 7163] <... write resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7163] close(3 [pid 4996] lstat("./179/file0", [pid 4995] getdents64(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7163] <... close resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7163] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] lstat("./179/file0", [pid 7163] <... symlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7163] memfd_create("syzkaller", 0 [pid 4996] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7163] <... memfd_create resumed>) = 3 [pid 4996] <... openat resumed>) = 4 [pid 4995] lstat("./175/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] fstat(4, [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7163] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] unlink("./175/binderfs" [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, [pid 7162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] getdents64(4, [pid 4995] <... unlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4993] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./179/file0" [pid 4993] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] getdents64(3, [pid 4993] close(4 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... close resumed>) = 0 [pid 4996] close(3 [pid 4993] rmdir("./179/file0" [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./179" [pid 4993] <... rmdir resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] getdents64(3, [pid 4996] mkdir("./180", 0777 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4993] close(3 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4993] rmdir("./179" [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4993] mkdir("./180", 0777 [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7164 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... openat resumed>) = 3 ./strace-static-x86_64: Process 7164 attached [pid 7163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7164] chdir("./180") = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7164] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] lstat("./175/file0", [pid 4993] close(3 [pid 7164] <... prctl resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 7164] setpgid(0, 0 [pid 7161] <... write resumed>) = 2097152 [pid 4995] umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7164] <... setpgid resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... openat resumed>) = 4 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7165 [pid 7164] <... openat resumed>) = 3 [pid 4995] fstat(4, [pid 7164] write(3, "1000", 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 7165 attached [pid 7164] <... write resumed>) = 4 [pid 4995] getdents64(4, [pid 7165] chdir("./180" [pid 7164] close(3 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7165] <... chdir resumed>) = 0 [pid 7164] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 7165] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7164] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7165] <... prctl resumed>) = 0 [pid 7164] <... symlink resumed>) = 0 [pid 4995] close(4 [pid 7165] setpgid(0, 0 [pid 7164] memfd_create("syzkaller", 0 [pid 4995] <... close resumed>) = 0 [pid 7165] <... setpgid resumed>) = 0 [pid 7164] <... memfd_create resumed>) = 3 [pid 4995] rmdir("./175/file0" [pid 7165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7165] <... openat resumed>) = 3 [pid 7164] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... rmdir resumed>) = 0 [pid 7165] write(3, "1000", 4 [pid 7162] <... write resumed>) = 2097152 [pid 4995] getdents64(3, [pid 7165] <... write resumed>) = 4 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7165] close(3 [pid 4995] close(3 [pid 7165] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7165] symlink("/dev/binderfs", "./binderfs" [pid 4995] rmdir("./175" [pid 7165] <... symlink resumed>) = 0 [pid 7165] memfd_create("syzkaller", 0 [pid 4995] <... rmdir resumed>) = 0 [pid 7165] <... memfd_create resumed>) = 3 [pid 4995] mkdir("./176", 0777 [pid 7165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... mkdir resumed>) = 0 [pid 7165] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7161] munmap(0x7f46b9f9b000, 2097152 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7161] <... munmap resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 7162] munmap(0x7f46b9f9b000, 2097152 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7161] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4995] close(3 [pid 7163] <... write resumed>) = 2097152 [pid 7162] <... munmap resumed>) = 0 [pid 7161] <... openat resumed>) = 4 [pid 4995] <... close resumed>) = 0 [pid 7162] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7161] ioctl(4, LOOP_SET_FD, 3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7163] munmap(0x7f46b9f9b000, 2097152 [pid 7162] <... openat resumed>) = 4 [pid 7162] ioctl(4, LOOP_SET_FD, 3 [pid 7164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7163] <... munmap resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7166 [pid 7161] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 7166 attached [pid 7165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7163] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7162] <... ioctl resumed>) = 0 [pid 7166] chdir("./176" [pid 7163] <... openat resumed>) = 4 [pid 7162] close(3 [pid 7161] close(3 [pid 7166] <... chdir resumed>) = 0 [pid 7163] ioctl(4, LOOP_SET_FD, 3 [pid 7166] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7162] <... close resumed>) = 0 [pid 7161] <... close resumed>) = 0 [pid 7162] mkdir("./file0", 0777 [pid 7161] mkdir("./file0", 0777 [pid 7162] <... mkdir resumed>) = 0 [pid 7161] <... mkdir resumed>) = 0 [pid 7162] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7161] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7166] <... prctl resumed>) = 0 [pid 7164] <... write resumed>) = 2097152 [pid 7163] <... ioctl resumed>) = 0 [pid 7166] setpgid(0, 0 [pid 7164] munmap(0x7f46b9f9b000, 2097152 [pid 7163] close(3 [pid 7166] <... setpgid resumed>) = 0 [pid 7163] <... close resumed>) = 0 [pid 7166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7163] mkdir("./file0", 0777 [pid 7166] <... openat resumed>) = 3 [pid 7163] <... mkdir resumed>) = 0 [pid 7166] write(3, "1000", 4 [pid 7163] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7166] <... write resumed>) = 4 [pid 7164] <... munmap resumed>) = 0 [ 186.712038][ T7161] loop4: detected capacity change from 0 to 4096 [ 186.720681][ T7162] loop1: detected capacity change from 0 to 4096 [ 186.741293][ T7163] loop5: detected capacity change from 0 to 4096 [ 186.752497][ T7162] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7166] close(3) = 0 [pid 7164] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7166] symlink("/dev/binderfs", "./binderfs" [pid 7164] <... openat resumed>) = 4 [pid 7166] <... symlink resumed>) = 0 [pid 7164] ioctl(4, LOOP_SET_FD, 3 [pid 7166] memfd_create("syzkaller", 0) = 3 [pid 7165] <... write resumed>) = 2097152 [pid 7164] <... ioctl resumed>) = 0 [pid 7166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7165] munmap(0x7f46b9f9b000, 2097152 [pid 7164] close(3 [pid 7165] <... munmap resumed>) = 0 [pid 7164] <... close resumed>) = 0 [pid 7166] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7164] mkdir("./file0", 0777 [pid 7165] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7164] <... mkdir resumed>) = 0 [pid 7165] <... openat resumed>) = 4 [pid 7165] ioctl(4, LOOP_SET_FD, 3 [ 186.770400][ T7161] NILFS (loop4): invalid segment: Checksum error in segment payload [ 186.773313][ T7163] NILFS (loop5): invalid segment: Checksum error in segment payload [ 186.780087][ T7162] NILFS (loop1): trying rollback from an earlier position [ 186.795275][ T7164] loop3: detected capacity change from 0 to 4096 [ 186.796046][ T7161] NILFS (loop4): trying rollback from an earlier position [ 186.803592][ T7163] NILFS (loop5): trying rollback from an earlier position [pid 7164] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7165] <... ioctl resumed>) = 0 [pid 7165] close(3) = 0 [pid 7165] mkdir("./file0", 0777) = 0 [ 186.827634][ T7165] loop0: detected capacity change from 0 to 4096 [ 186.828630][ T7162] NILFS (loop1): recovery complete [ 186.845479][ T7164] NILFS (loop3): invalid segment: Checksum error in segment payload [ 186.849760][ T7161] NILFS (loop4): recovery complete [ 186.864392][ T7167] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7165] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7162] <... mount resumed>) = 0 [pid 7162] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7162] chdir("./file0") = 0 [pid 7162] ioctl(4, LOOP_CLR_FD) = 0 [pid 7162] close(4) = 0 [pid 7162] creat("./bus", 000) = 4 [pid 7162] unlink("./bus") = 0 [pid 7162] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7161] <... mount resumed>) = 0 [pid 7161] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7161] chdir("./file0") = 0 [pid 7161] ioctl(4, LOOP_CLR_FD) = 0 [pid 7161] close(4 [pid 7166] <... write resumed>) = 2097152 [pid 7161] <... close resumed>) = 0 [ 186.867506][ T7163] NILFS (loop5): recovery complete [ 186.876407][ T7164] NILFS (loop3): trying rollback from an earlier position [ 186.883691][ T7165] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7161] creat("./bus", 000 [pid 7166] munmap(0x7f46b9f9b000, 2097152 [pid 7163] <... mount resumed>) = 0 [pid 7163] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7162] <... pwritev2 resumed>) = 65007 [pid 7166] <... munmap resumed>) = 0 [pid 7163] <... openat resumed>) = 3 [pid 7166] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7163] chdir("./file0" [pid 7162] exit_group(0 [pid 7166] <... openat resumed>) = 4 [pid 7163] <... chdir resumed>) = 0 [pid 7162] <... exit_group resumed>) = ? [pid 7166] ioctl(4, LOOP_SET_FD, 3 [pid 7163] ioctl(4, LOOP_CLR_FD) = 0 [pid 7163] close(4) = 0 [pid 7163] creat("./bus", 000 [pid 7161] <... creat resumed>) = 4 [ 186.927929][ T7165] NILFS (loop0): trying rollback from an earlier position [ 186.933557][ T7168] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 186.940596][ T7169] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 186.960938][ T7164] NILFS (loop3): recovery complete [ 186.966523][ T7165] NILFS (loop0): recovery complete [pid 7161] unlink("./bus") = 0 [pid 7161] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7163] <... creat resumed>) = 4 [pid 7163] unlink("./bus") = 0 [pid 7163] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7166] <... ioctl resumed>) = 0 [pid 7162] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7162, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7166] close(3 [pid 7164] <... mount resumed>) = 0 [pid 4994] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7166] <... close resumed>) = 0 [pid 7164] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./179/binderfs") = 0 [ 186.988172][ T7166] loop2: detected capacity change from 0 to 4096 [ 187.007381][ T7171] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 187.019849][ T7170] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7166] mkdir("./file0", 0777 [pid 7164] <... openat resumed>) = 3 [pid 7161] <... pwritev2 resumed>) = 65007 [pid 7166] <... mkdir resumed>) = 0 [pid 7165] <... mount resumed>) = 0 [pid 7164] chdir("./file0" [pid 7161] exit_group(0 [pid 7166] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7165] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7164] <... chdir resumed>) = 0 [pid 7161] <... exit_group resumed>) = ? [pid 7165] <... openat resumed>) = 3 [pid 7164] ioctl(4, LOOP_CLR_FD [pid 7163] <... pwritev2 resumed>) = 65007 [pid 7164] <... ioctl resumed>) = 0 [pid 7164] close(4 [pid 7165] chdir("./file0" [pid 7164] <... close resumed>) = 0 [pid 7163] exit_group(0 [pid 7161] +++ exited with 0 +++ [pid 4994] <... umount2 resumed>) = 0 [pid 7165] <... chdir resumed>) = 0 [pid 7164] creat("./bus", 000 [pid 7163] <... exit_group resumed>) = ? [pid 7165] ioctl(4, LOOP_CLR_FD [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7161, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 7165] <... ioctl resumed>) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 7165] close(4) = 0 [pid 4994] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7165] creat("./bus", 000 [pid 4997] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7164] <... creat resumed>) = 4 [pid 7164] unlink("./bus" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7165] <... creat resumed>) = 4 [pid 7164] <... unlink resumed>) = 0 [pid 7163] +++ exited with 0 +++ [pid 4997] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7164] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7165] unlink("./bus" [pid 4997] <... openat resumed>) = 3 [pid 4994] lstat("./179/file0", [pid 7165] <... unlink resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7163, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=10 /* 0.10 s */} --- [pid 4997] fstat(3, [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7165] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... restart_syscall resumed>) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./180/binderfs", [pid 4994] fstat(4, [pid 4998] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] getdents64(4, [pid 4998] fstat(3, [pid 4997] unlink("./180/binderfs" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4994] getdents64(4, [pid 4998] getdents64(3, [pid 4997] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7164] <... pwritev2 resumed>) = 65007 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] close(4 [pid 7164] exit_group(0 [ 187.040648][ T7166] NILFS (loop2): invalid segment: Checksum error in segment payload [ 187.067343][ T7166] NILFS (loop2): trying rollback from an earlier position [pid 4998] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7164] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 7165] <... pwritev2 resumed>) = 65007 [pid 4998] lstat("./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] rmdir("./179/file0" [pid 7165] exit_group(0 [pid 4998] unlink("./180/binderfs" [pid 4994] <... rmdir resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4994] getdents64(3, [pid 4998] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7165] <... exit_group resumed>) = ? [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7164] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7164, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] close(3 [pid 4996] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./180/binderfs") = 0 [pid 4994] <... close resumed>) = 0 [ 187.123471][ T7166] NILFS (loop2): recovery complete [pid 4996] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./179") = 0 [pid 7165] +++ exited with 0 +++ [pid 4994] mkdir("./180", 0777 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7165, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7166] <... mount resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4993] <... restart_syscall resumed>) = 0 [pid 7166] <... openat resumed>) = 3 [pid 7166] chdir("./file0") = 0 [pid 4993] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7166] ioctl(4, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7166] <... ioctl resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7166] close(4 [pid 4993] <... openat resumed>) = 3 [pid 7166] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] fstat(3, [pid 7166] creat("./bus", 000 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] getdents64(3, [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] close(3 [pid 4993] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] lstat("./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./180/binderfs") = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7173 [pid 4993] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7173 attached [pid 7173] chdir("./180" [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 7173] <... chdir resumed>) = 0 [pid 7166] <... creat resumed>) = 4 [pid 4998] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7166] unlink("./bus" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7173] <... prctl resumed>) = 0 [pid 7166] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./180/file0", [pid 7166] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7173] setpgid(0, 0 [pid 4998] lstat("./180/file0", [pid 4997] lstat("./180/file0", [pid 4996] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7173] <... setpgid resumed>) = 0 [pid 4993] fstat(4, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(4, [pid 7173] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./180/file0", [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7173] write(3, "1000", 4 [ 187.178956][ T7172] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] rmdir("./180/file0" [pid 7173] <... write resumed>) = 4 [pid 4998] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... rmdir resumed>) = 0 [pid 7173] close(3 [pid 4993] getdents64(3, [pid 7173] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4997] <... openat resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7173] symlink("/dev/binderfs", "./binderfs" [pid 4998] fstat(4, [pid 4997] fstat(4, [pid 4996] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 7173] <... symlink resumed>) = 0 [pid 4998] getdents64(4, [pid 4997] getdents64(4, [pid 4996] fstat(4, [pid 4993] rmdir("./180" [pid 7173] memfd_create("syzkaller", 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7173] <... memfd_create resumed>) = 3 [pid 4998] getdents64(4, [pid 4997] getdents64(4, [pid 4996] getdents64(4, [pid 4993] mkdir("./181", 0777 [pid 7173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7166] <... pwritev2 resumed>) = 65007 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... mkdir resumed>) = 0 [pid 7173] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7166] exit_group(0 [pid 4998] close(4 [pid 4997] close(4 [pid 4996] getdents64(4, [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7166] <... exit_group resumed>) = ? [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4998] rmdir("./180/file0" [pid 4997] rmdir("./180/file0" [pid 4996] close(4 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7174 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./180/file0" [pid 4998] close(3 [pid 4997] close(3./strace-static-x86_64: Process 7174 attached [pid 4996] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./180" [pid 4997] rmdir("./180" [pid 4996] getdents64(3, [pid 7174] chdir("./181" [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4998] mkdir("./181", 0777 [pid 4997] mkdir("./181", 0777 [pid 4996] <... close resumed>) = 0 [pid 7174] <... chdir resumed>) = 0 [pid 7174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7174] setpgid(0, 0) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4996] rmdir("./180" [pid 4997] <... mkdir resumed>) = 0 [pid 7174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... rmdir resumed>) = 0 [pid 7174] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 3 [pid 4996] mkdir("./181", 0777 [pid 4997] <... openat resumed>) = 3 [pid 7174] <... write resumed>) = 4 [pid 7174] close(3) = 0 [pid 7174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... mkdir resumed>) = 0 [pid 7174] memfd_create("syzkaller", 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7174] <... memfd_create resumed>) = 3 [pid 4998] close(3 [pid 4997] close(3 [pid 4996] <... openat resumed>) = 3 [pid 7174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7174] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7176 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7175 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7177 [pid 7166] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7166, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- ./strace-static-x86_64: Process 7176 attached [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 7176] chdir("./181" [pid 4995] <... restart_syscall resumed>) = 0 [pid 7176] <... chdir resumed>) = 0 [pid 7176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4995] umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7176] setpgid(0, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7176] <... setpgid resumed>) = 0 [pid 4995] openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7175 attached [pid 7176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... openat resumed>) = 3 ./strace-static-x86_64: Process 7177 attached [pid 7176] <... openat resumed>) = 3 [pid 4995] fstat(3, [pid 7177] chdir("./181" [pid 7176] write(3, "1000", 4 [pid 7175] chdir("./181" [pid 7173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7177] <... chdir resumed>) = 0 [pid 7176] <... write resumed>) = 4 [pid 7175] <... chdir resumed>) = 0 [pid 4995] getdents64(3, [pid 7177] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7176] close(3 [pid 7175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7177] <... prctl resumed>) = 0 [pid 7176] <... close resumed>) = 0 [pid 7175] <... prctl resumed>) = 0 [pid 4995] umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7177] setpgid(0, 0 [pid 7176] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7176] <... symlink resumed>) = 0 [pid 4995] lstat("./176/binderfs", [pid 7177] <... setpgid resumed>) = 0 [pid 7176] memfd_create("syzkaller", 0 [pid 7175] setpgid(0, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7176] <... memfd_create resumed>) = 3 [pid 4995] unlink("./176/binderfs" [pid 7176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... unlink resumed>) = 0 [pid 7177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7176] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7175] <... setpgid resumed>) = 0 [pid 4995] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7177] <... openat resumed>) = 3 [pid 7175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7177] write(3, "1000", 4 [pid 7175] <... openat resumed>) = 3 [pid 7177] <... write resumed>) = 4 [pid 7175] write(3, "1000", 4 [pid 7177] close(3 [pid 7175] <... write resumed>) = 4 [pid 7177] <... close resumed>) = 0 [pid 7175] close(3 [pid 7177] symlink("/dev/binderfs", "./binderfs" [pid 7175] <... close resumed>) = 0 [pid 7177] <... symlink resumed>) = 0 [pid 7175] symlink("/dev/binderfs", "./binderfs" [pid 7177] memfd_create("syzkaller", 0 [pid 7175] <... symlink resumed>) = 0 [pid 7177] <... memfd_create resumed>) = 3 [pid 7175] memfd_create("syzkaller", 0 [pid 7177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7175] <... memfd_create resumed>) = 3 [pid 7177] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... umount2 resumed>) = 0 [pid 7173] <... write resumed>) = 2097152 [pid 7177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7173] munmap(0x7f46b9f9b000, 2097152 [pid 4995] lstat("./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7173] <... munmap resumed>) = 0 [pid 4995] umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7173] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4995] fstat(4, [pid 7174] <... write resumed>) = 2097152 [pid 7173] <... openat resumed>) = 4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7173] ioctl(4, LOOP_SET_FD, 3 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./176/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./176") = 0 [pid 4995] mkdir("./177", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7176] <... write resumed>) = 2097152 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7178 ./strace-static-x86_64: Process 7178 attached [pid 7178] chdir("./177") = 0 [pid 7178] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7173] <... ioctl resumed>) = 0 [pid 7178] <... prctl resumed>) = 0 [pid 7178] setpgid(0, 0 [pid 7173] close(3 [pid 7178] <... setpgid resumed>) = 0 [pid 7173] <... close resumed>) = 0 [pid 7178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7173] mkdir("./file0", 0777 [pid 7178] <... openat resumed>) = 3 [pid 7173] <... mkdir resumed>) = 0 [pid 7178] write(3, "1000", 4 [pid 7176] munmap(0x7f46b9f9b000, 2097152 [pid 7173] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7178] <... write resumed>) = 4 [pid 7176] <... munmap resumed>) = 0 [pid 7174] munmap(0x7f46b9f9b000, 2097152 [pid 7178] close(3) = 0 [pid 7176] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7178] symlink("/dev/binderfs", "./binderfs" [pid 7176] <... openat resumed>) = 4 [pid 7178] <... symlink resumed>) = 0 [pid 7176] ioctl(4, LOOP_SET_FD, 3 [pid 7175] <... write resumed>) = 2097152 [pid 7174] <... munmap resumed>) = 0 [pid 7178] memfd_create("syzkaller", 0 [pid 7177] <... write resumed>) = 2097152 [pid 7174] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7178] <... memfd_create resumed>) = 3 [pid 7174] <... openat resumed>) = 4 [pid 7178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7177] munmap(0x7f46b9f9b000, 2097152 [pid 7178] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7174] ioctl(4, LOOP_SET_FD, 3 [pid 7177] <... munmap resumed>) = 0 [ 187.405267][ T7173] loop1: detected capacity change from 0 to 4096 [ 187.442536][ T7176] loop4: detected capacity change from 0 to 4096 [pid 7177] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7174] <... ioctl resumed>) = 0 [pid 7177] <... openat resumed>) = 4 [pid 7174] close(3 [pid 7175] munmap(0x7f46b9f9b000, 2097152 [pid 7177] ioctl(4, LOOP_SET_FD, 3 [pid 7175] <... munmap resumed>) = 0 [pid 7175] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7175] ioctl(4, LOOP_SET_FD, 3 [pid 7177] <... ioctl resumed>) = 0 [pid 7174] <... close resumed>) = 0 [pid 7176] <... ioctl resumed>) = 0 [pid 7176] close(3) = 0 [pid 7176] mkdir("./file0", 0777 [pid 7174] mkdir("./file0", 0777 [pid 7176] <... mkdir resumed>) = 0 [pid 7176] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7177] close(3 [pid 7174] <... mkdir resumed>) = 0 [ 187.465353][ T7174] loop0: detected capacity change from 0 to 4096 [ 187.466825][ T7173] NILFS (loop1): invalid segment: Checksum error in segment payload [ 187.486078][ T7177] loop3: detected capacity change from 0 to 4096 [ 187.486994][ T7175] loop5: detected capacity change from 0 to 4096 [pid 7174] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7177] <... close resumed>) = 0 [pid 7177] mkdir("./file0", 0777) = 0 [pid 7177] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 187.516237][ T7174] NILFS (loop0): invalid segment: Checksum error in segment payload [ 187.541485][ T7176] NILFS (loop4): invalid segment: Checksum error in segment payload [ 187.549667][ T7177] NILFS (loop3): invalid segment: Checksum error in segment payload [ 187.554381][ T7173] NILFS (loop1): trying rollback from an earlier position [pid 7178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7175] <... ioctl resumed>) = 0 [pid 7175] close(3) = 0 [pid 7175] mkdir("./file0", 0777) = 0 [pid 7175] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7178] <... write resumed>) = 2097152 [ 187.558686][ T7174] NILFS (loop0): trying rollback from an earlier position [ 187.574447][ T7177] NILFS (loop3): trying rollback from an earlier position [ 187.594069][ T7176] NILFS (loop4): trying rollback from an earlier position [ 187.605324][ T7173] NILFS (loop1): recovery complete [pid 7178] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7178] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 7178] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7178] close(3) = 0 [pid 7178] mkdir("./file0", 0777) = 0 [pid 7174] <... mount resumed>) = 0 [pid 7174] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7178] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7174] <... openat resumed>) = 3 [pid 7174] chdir("./file0") = 0 [pid 7174] ioctl(4, LOOP_CLR_FD) = 0 [ 187.612685][ T7174] NILFS (loop0): recovery complete [ 187.615846][ T7175] NILFS (loop5): invalid segment: Checksum error in segment payload [ 187.618562][ T7177] NILFS (loop3): recovery complete [ 187.626832][ T7175] NILFS (loop5): trying rollback from an earlier position [ 187.639868][ T7178] loop2: detected capacity change from 0 to 4096 [ 187.640852][ T7176] NILFS (loop4): recovery complete [pid 7174] close(4) = 0 [pid 7174] creat("./bus", 000 [pid 7177] <... mount resumed>) = 0 [pid 7177] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7177] chdir("./file0") = 0 [pid 7177] ioctl(4, LOOP_CLR_FD) = 0 [pid 7177] close(4) = 0 [pid 7177] creat("./bus", 000 [pid 7173] <... mount resumed>) = 0 [pid 7173] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7173] chdir("./file0") = 0 [pid 7173] ioctl(4, LOOP_CLR_FD) = 0 [pid 7173] close(4) = 0 [ 187.662009][ T7178] NILFS (loop2): invalid segment: Checksum error in segment payload [ 187.665331][ T7179] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 187.672540][ T7178] NILFS (loop2): trying rollback from an earlier position [ 187.682499][ T7180] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 187.687894][ T7181] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7173] creat("./bus", 000 [pid 7175] <... mount resumed>) = 0 [pid 7175] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7176] <... mount resumed>) = 0 [pid 7176] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7176] chdir("./file0") = 0 [pid 7176] ioctl(4, LOOP_CLR_FD) = 0 [pid 7176] close(4) = 0 [pid 7176] creat("./bus", 000 [pid 7175] <... openat resumed>) = 3 [pid 7175] chdir("./file0") = 0 [pid 7175] ioctl(4, LOOP_CLR_FD) = 0 [pid 7175] close(4 [pid 7176] <... creat resumed>) = 4 [pid 7175] <... close resumed>) = 0 [pid 7177] <... creat resumed>) = 4 [pid 7176] unlink("./bus" [pid 7175] creat("./bus", 000 [pid 7174] <... creat resumed>) = 4 [ 187.717239][ T7175] NILFS (loop5): recovery complete [ 187.736404][ T7182] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 187.748888][ T7183] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7173] <... creat resumed>) = 4 [pid 7177] unlink("./bus" [pid 7176] <... unlink resumed>) = 0 [pid 7174] unlink("./bus" [pid 7173] unlink("./bus" [pid 7176] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7174] <... unlink resumed>) = 0 [pid 7177] <... unlink resumed>) = 0 [pid 7174] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7177] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7173] <... unlink resumed>) = 0 [pid 7173] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7175] <... creat resumed>) = 4 [pid 7175] unlink("./bus") = 0 [ 187.772878][ T7178] NILFS (loop2): recovery complete [pid 7175] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7176] <... pwritev2 resumed>) = 65007 [pid 7176] exit_group(0) = ? [pid 7177] <... pwritev2 resumed>) = 65007 [pid 7174] <... pwritev2 resumed>) = 65007 [pid 7177] exit_group(0 [pid 7174] exit_group(0 [pid 7177] <... exit_group resumed>) = ? [pid 7174] <... exit_group resumed>) = ? [pid 7178] <... mount resumed>) = 0 [pid 7178] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7178] chdir("./file0") = 0 [pid 7178] ioctl(4, LOOP_CLR_FD) = 0 [pid 7178] close(4) = 0 [pid 7178] creat("./bus", 000 [pid 7175] <... pwritev2 resumed>) = 65007 [pid 7173] <... pwritev2 resumed>) = 65007 [pid 7173] exit_group(0) = ? [pid 7175] exit_group(0 [pid 7178] <... creat resumed>) = 4 [pid 7175] <... exit_group resumed>) = ? [pid 7178] unlink("./bus" [pid 7176] +++ exited with 0 +++ [pid 7178] <... unlink resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7176, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 7178] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7174] +++ exited with 0 +++ [pid 4997] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7177] +++ exited with 0 +++ [pid 7175] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 3 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7174, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 7173] +++ exited with 0 +++ [pid 4997] fstat(3, [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7177, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7173, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7175, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... restart_syscall resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4996] <... restart_syscall resumed>) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./181/binderfs", [pid 4997] lstat("./181/binderfs", [pid 4996] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7178] <... pwritev2 resumed>) = 65007 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7178] exit_group(0 [pid 4998] unlink("./181/binderfs" [pid 4997] unlink("./181/binderfs" [pid 4996] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7178] <... exit_group resumed>) = ? [pid 4998] <... unlink resumed>) = 0 [ 187.830996][ T7184] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] <... unlink resumed>) = 0 [pid 4998] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 4993] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] fstat(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, [pid 4993] fstat(3, [pid 4996] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 4996] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./180/binderfs", [pid 4993] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./181/binderfs", [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./180/binderfs" [pid 4993] lstat("./181/binderfs", [pid 4996] unlink("./181/binderfs" [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4994] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] unlink("./181/binderfs" [pid 7178] +++ exited with 0 +++ [pid 4998] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7178, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=9 /* 0.09 s */} --- [pid 4993] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./177/binderfs") = 0 [pid 4995] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4998] lstat("./181/file0", [pid 4997] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./181/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./181/file0" [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./181/file0" [pid 4994] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] lstat("./180/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4994] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4997] getdents64(3, [pid 4998] rmdir("./181") = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, [pid 4998] mkdir("./182", 0777 [pid 4997] close(3 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./180/file0" [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] rmdir("./181" [pid 4994] close(3) = 0 [pid 4994] rmdir("./180") = 0 [pid 4994] mkdir("./181", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] mkdir("./182", 0777 [pid 4996] <... umount2 resumed>) = 0 [pid 4998] close(3 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7185 ./strace-static-x86_64: Process 7185 attached [pid 4997] <... mkdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7185] chdir("./181") = 0 [pid 7185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7185] setpgid(0, 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7186 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 7185] <... setpgid resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] <... umount2 resumed>) = 0 [pid 4996] lstat("./181/file0", [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7187 [pid 4993] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./181/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7185] <... openat resumed>) = 3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 7185] write(3, "1000", 4 [pid 4993] fstat(4, [pid 7185] <... write resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7185] close(3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, [pid 7185] <... close resumed>) = 0 [pid 7185] symlink("/dev/binderfs", "./binderfs" [pid 4996] getdents64(4, [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 7187 attached [pid 7185] <... symlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7187] chdir("./182" [pid 7185] memfd_create("syzkaller", 0 [pid 4996] close(4 [pid 4993] getdents64(4, [pid 7187] <... chdir resumed>) = 0 [pid 7185] <... memfd_create resumed>) = 3 [pid 4996] <... close resumed>) = 0 [pid 7187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] rmdir("./181/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7187] <... prctl resumed>) = 0 [pid 7185] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] close(4 [pid 7187] setpgid(0, 0 [pid 4996] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 7187] <... setpgid resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] rmdir("./181/file0"./strace-static-x86_64: Process 7186 attached [pid 7187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 7187] <... openat resumed>) = 3 [pid 7186] chdir("./182" [pid 4996] <... close resumed>) = 0 [pid 4993] getdents64(3, [pid 7187] write(3, "1000", 4 [pid 7186] <... chdir resumed>) = 0 [pid 4996] rmdir("./181" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7187] <... write resumed>) = 4 [pid 7186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... rmdir resumed>) = 0 [pid 4993] close(3 [pid 7187] close(3 [pid 7186] <... prctl resumed>) = 0 [pid 4996] mkdir("./182", 0777 [pid 4993] <... close resumed>) = 0 [pid 7187] <... close resumed>) = 0 [pid 7186] setpgid(0, 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4993] rmdir("./181" [pid 7187] symlink("/dev/binderfs", "./binderfs" [pid 7186] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4993] <... rmdir resumed>) = 0 [pid 7187] <... symlink resumed>) = 0 [pid 7186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... openat resumed>) = 3 [pid 4993] mkdir("./182", 0777 [pid 7187] memfd_create("syzkaller", 0 [pid 7186] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] <... mkdir resumed>) = 0 [pid 7187] <... memfd_create resumed>) = 3 [pid 7186] write(3, "1000", 4 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7186] <... write resumed>) = 4 [pid 4996] close(3 [pid 4993] <... openat resumed>) = 3 [pid 7187] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7186] close(3 [pid 4996] <... close resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7186] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7186] symlink("/dev/binderfs", "./binderfs" [pid 4993] close(3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7188 [pid 4995] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 7186] <... symlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7188 attached [pid 7187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7186] memfd_create("syzkaller", 0 [pid 7185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] lstat("./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7189 [pid 4995] umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] close(4) = 0 [pid 4995] rmdir("./177/file0") = 0 [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] close(3) = 0 [pid 4995] rmdir("./177" [pid 7186] <... memfd_create resumed>) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./178", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 7186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 7186] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7190 ./strace-static-x86_64: Process 7189 attached [pid 7189] chdir("./182"./strace-static-x86_64: Process 7190 attached ) = 0 [pid 7190] chdir("./178" [pid 7189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7189] setpgid(0, 0) = 0 [pid 7190] <... chdir resumed>) = 0 [pid 7189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7190] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7189] <... openat resumed>) = 3 [pid 7190] <... prctl resumed>) = 0 [pid 7189] write(3, "1000", 4 [pid 7190] setpgid(0, 0 [pid 7189] <... write resumed>) = 4 [pid 7190] <... setpgid resumed>) = 0 [pid 7189] close(3 [pid 7190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7189] <... close resumed>) = 0 [pid 7190] <... openat resumed>) = 3 [pid 7189] symlink("/dev/binderfs", "./binderfs" [pid 7190] write(3, "1000", 4 [pid 7189] <... symlink resumed>) = 0 [pid 7190] <... write resumed>) = 4 [pid 7189] memfd_create("syzkaller", 0 [pid 7188] chdir("./182" [pid 7190] close(3 [pid 7189] <... memfd_create resumed>) = 3 [pid 7190] <... close resumed>) = 0 [pid 7189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7190] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7189] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7188] <... chdir resumed>) = 0 [pid 7190] memfd_create("syzkaller", 0 [pid 7188] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7190] <... memfd_create resumed>) = 3 [pid 7190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7188] <... prctl resumed>) = 0 [pid 7190] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7188] setpgid(0, 0 [pid 7186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7188] <... setpgid resumed>) = 0 [pid 7188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7188] write(3, "1000", 4) = 4 [pid 7188] close(3) = 0 [pid 7188] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7188] memfd_create("syzkaller", 0) = 3 [pid 7188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7185] <... write resumed>) = 2097152 [pid 7185] munmap(0x7f46b9f9b000, 2097152 [pid 7189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7187] <... write resumed>) = 2097152 [pid 7185] <... munmap resumed>) = 0 [pid 7185] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7187] munmap(0x7f46b9f9b000, 2097152 [pid 7185] <... openat resumed>) = 4 [pid 7188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7185] ioctl(4, LOOP_SET_FD, 3 [pid 7187] <... munmap resumed>) = 0 [pid 7190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7187] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7187] ioctl(4, LOOP_SET_FD, 3 [pid 7186] <... write resumed>) = 2097152 [pid 7185] <... ioctl resumed>) = 0 [pid 7186] munmap(0x7f46b9f9b000, 2097152 [pid 7185] close(3 [pid 7186] <... munmap resumed>) = 0 [pid 7185] <... close resumed>) = 0 [pid 7186] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7185] mkdir("./file0", 0777) = 0 [pid 7186] <... openat resumed>) = 4 [pid 7185] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7186] ioctl(4, LOOP_SET_FD, 3 [pid 7187] <... ioctl resumed>) = 0 [pid 7187] close(3) = 0 [pid 7187] mkdir("./file0", 0777) = 0 [pid 7187] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7186] <... ioctl resumed>) = 0 [pid 7186] close(3) = 0 [ 188.175210][ T7185] loop1: detected capacity change from 0 to 4096 [ 188.178785][ T7187] loop4: detected capacity change from 0 to 4096 [ 188.200074][ T7186] loop5: detected capacity change from 0 to 4096 [ 188.214438][ T7185] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7186] mkdir("./file0", 0777 [pid 7189] <... write resumed>) = 2097152 [pid 7189] munmap(0x7f46b9f9b000, 2097152 [pid 7190] <... write resumed>) = 2097152 [pid 7188] <... write resumed>) = 2097152 [pid 7186] <... mkdir resumed>) = 0 [pid 7188] munmap(0x7f46b9f9b000, 2097152 [pid 7186] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7189] <... munmap resumed>) = 0 [pid 7190] munmap(0x7f46b9f9b000, 2097152 [pid 7188] <... munmap resumed>) = 0 [pid 7190] <... munmap resumed>) = 0 [pid 7189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7189] ioctl(4, LOOP_SET_FD, 3 [pid 7188] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7190] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 7190] ioctl(4, LOOP_SET_FD, 3 [pid 7188] <... openat resumed>) = 4 [pid 7189] <... ioctl resumed>) = 0 [pid 7189] close(3) = 0 [ 188.226996][ T7185] NILFS (loop1): trying rollback from an earlier position [ 188.237109][ T7187] NILFS (loop4): invalid segment: Checksum error in segment payload [ 188.250875][ T7189] loop0: detected capacity change from 0 to 4096 [ 188.252988][ T7186] NILFS (loop5): invalid segment: Checksum error in segment payload [ 188.259181][ T7190] loop2: detected capacity change from 0 to 4096 [ 188.269370][ T7185] NILFS (loop1): recovery complete [pid 7188] ioctl(4, LOOP_SET_FD, 3 [pid 7189] mkdir("./file0", 0777) = 0 [pid 7190] <... ioctl resumed>) = 0 [pid 7190] close(3) = 0 [pid 7190] mkdir("./file0", 0777) = 0 [pid 7189] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7190] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7188] <... ioctl resumed>) = 0 [ 188.272863][ T7187] NILFS (loop4): trying rollback from an earlier position [ 188.278329][ T7186] NILFS (loop5): trying rollback from an earlier position [ 188.292302][ T7188] loop3: detected capacity change from 0 to 4096 [ 188.307764][ T7191] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 188.309655][ T7189] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7188] close(3) = 0 [pid 7188] mkdir("./file0", 0777) = 0 [pid 7185] <... mount resumed>) = 0 [pid 7188] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7185] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7185] chdir("./file0") = 0 [pid 7185] ioctl(4, LOOP_CLR_FD) = 0 [pid 7185] close(4) = 0 [pid 7185] creat("./bus", 000) = 4 [ 188.320587][ T7190] NILFS (loop2): invalid segment: Checksum error in segment payload [ 188.334574][ T7190] NILFS (loop2): trying rollback from an earlier position [ 188.343722][ T7189] NILFS (loop0): trying rollback from an earlier position [ 188.349821][ T7187] NILFS (loop4): recovery complete [ 188.355272][ T7186] NILFS (loop5): recovery complete [ 188.366112][ T7192] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7187] <... mount resumed>) = 0 [pid 7185] unlink("./bus") = 0 [pid 7185] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7187] chdir("./file0" [pid 7190] <... mount resumed>) = 0 [pid 7189] <... mount resumed>) = 0 [pid 7187] <... chdir resumed>) = 0 [pid 7190] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7190] chdir("./file0") = 0 [pid 7190] ioctl(4, LOOP_CLR_FD) = 0 [pid 7190] close(4) = 0 [pid 7189] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7187] ioctl(4, LOOP_CLR_FD [ 188.377759][ T7190] NILFS (loop2): recovery complete [ 188.385173][ T7188] NILFS (loop3): invalid segment: Checksum error in segment payload [ 188.391678][ T7193] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 188.405851][ T7189] NILFS (loop0): recovery complete [ 188.412746][ T7195] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7190] creat("./bus", 000) = 4 [pid 7189] <... openat resumed>) = 3 [pid 7187] <... ioctl resumed>) = 0 [pid 7185] <... pwritev2 resumed>) = 65007 [pid 7190] unlink("./bus" [pid 7189] chdir("./file0" [pid 7187] close(4 [pid 7190] <... unlink resumed>) = 0 [pid 7189] <... chdir resumed>) = 0 [pid 7187] <... close resumed>) = 0 [pid 7185] exit_group(0 [pid 7189] ioctl(4, LOOP_CLR_FD [pid 7187] creat("./bus", 000 [pid 7185] <... exit_group resumed>) = ? [pid 7190] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7189] <... ioctl resumed>) = 0 [pid 7189] close(4) = 0 [pid 7189] creat("./bus", 000) = 4 [pid 7187] <... creat resumed>) = 4 [pid 7186] <... mount resumed>) = 0 [pid 7185] +++ exited with 0 +++ [pid 7189] unlink("./bus" [pid 7187] unlink("./bus" [pid 7186] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7185, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 7190] <... pwritev2 resumed>) = 65007 [pid 7189] <... unlink resumed>) = 0 [pid 7187] <... unlink resumed>) = 0 [pid 7186] <... openat resumed>) = 3 [pid 7189] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 188.423920][ T7188] NILFS (loop3): trying rollback from an earlier position [ 188.446606][ T7194] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7186] chdir("./file0" [pid 7190] exit_group(0 [pid 7187] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7186] <... chdir resumed>) = 0 [pid 4994] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7190] <... exit_group resumed>) = ? [pid 7186] ioctl(4, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7186] <... ioctl resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7186] close(4 [pid 4994] <... openat resumed>) = 3 [pid 7186] <... close resumed>) = 0 [pid 4994] fstat(3, [pid 7186] creat("./bus", 000 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./181/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./181/binderfs") = 0 [pid 4994] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7189] <... pwritev2 resumed>) = 65007 [pid 7189] exit_group(0) = ? [pid 7186] <... creat resumed>) = 4 [pid 7186] unlink("./bus") = 0 [ 188.481347][ T7188] NILFS (loop3): recovery complete [pid 7186] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7190] +++ exited with 0 +++ [pid 7186] <... pwritev2 resumed>) = 65007 [pid 7186] exit_group(0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7190, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 7186] <... exit_group resumed>) = ? [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 7189] +++ exited with 0 +++ [pid 4995] umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7189, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] <... openat resumed>) = 3 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 4993] <... restart_syscall resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./178/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] unlink("./178/binderfs" [pid 4993] <... openat resumed>) = 3 [pid 7188] <... mount resumed>) = 0 [pid 7187] <... pwritev2 resumed>) = 65007 [pid 4995] <... unlink resumed>) = 0 [pid 4993] fstat(3, [pid 7188] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7187] exit_group(0 [pid 4995] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7188] <... openat resumed>) = 3 [pid 7187] <... exit_group resumed>) = ? [pid 7186] +++ exited with 0 +++ [pid 4994] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7188] chdir("./file0" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] getdents64(3, [pid 7188] <... chdir resumed>) = 0 [pid 7187] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7186, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] lstat("./181/file0", [pid 7188] ioctl(4, LOOP_CLR_FD [pid 4998] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7187, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7188] <... ioctl resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7188] close(4 [pid 4998] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] fstat(3, [pid 4994] <... openat resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(4, [pid 4998] getdents64(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7188] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7188] creat("./bus", 000 [pid 4998] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(4, [pid 4993] lstat("./182/binderfs", [pid 4998] lstat("./182/binderfs", [pid 4997] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] close(4 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./182/binderfs" [pid 4997] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... close resumed>) = 0 [pid 7188] <... creat resumed>) = 4 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] rmdir("./181/file0" [pid 4993] unlink("./182/binderfs" [pid 7188] unlink("./bus" [ 188.542965][ T7196] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, [pid 4994] <... rmdir resumed>) = 0 [pid 7188] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, [pid 4993] <... unlink resumed>) = 0 [pid 7188] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] close(3 [pid 4998] lstat("./182/file0", [pid 4997] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] rmdir("./181" [pid 4998] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] lstat("./182/binderfs", [pid 4994] <... rmdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] mkdir("./182", 0777 [pid 4998] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] unlink("./182/binderfs" [pid 4994] <... mkdir resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4997] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4998] fstat(4, [pid 4997] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4998] getdents64(4, [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] close(3 [pid 4998] getdents64(4, [pid 4994] <... close resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] close(4) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7197 [pid 4998] rmdir("./182/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./182") = 0 [pid 4998] mkdir("./183", 0777 [pid 7188] <... pwritev2 resumed>) = 65007 [pid 4998] <... mkdir resumed>) = 0 [pid 7188] exit_group(0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... umount2 resumed>) = 0 ./strace-static-x86_64: Process 7197 attached [pid 7197] chdir("./182" [pid 7188] <... exit_group resumed>) = ? [pid 4995] <... umount2 resumed>) = 0 [pid 7197] <... chdir resumed>) = 0 [pid 7197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7197] setpgid(0, 0) = 0 [pid 7197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7197] write(3, "1000", 4) = 4 [pid 7197] close(3) = 0 [pid 7197] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 7197] memfd_create("syzkaller", 0) = 3 [pid 7197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7197] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./182/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./182/file0") = 0 [pid 4997] getdents64(3, [pid 4995] lstat("./178/file0", [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4993] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] rmdir("./182" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4993] lstat("./182/file0", [pid 4997] mkdir("./183", 0777) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] <... openat resumed>) = 3 [pid 4993] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] close(3 [pid 4993] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4995] umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7188] +++ exited with 0 +++ [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7198 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 4 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7188, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4995] openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7199 [pid 4993] fstat(4, [pid 4995] <... openat resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(4, [pid 4996] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 7198 attached [pid 4996] fstat(3, [pid 4993] close(4./strace-static-x86_64: Process 7199 attached [pid 7198] chdir("./183" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 7199] chdir("./183" [pid 7198] <... chdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4993] rmdir("./182/file0" [pid 7199] <... chdir resumed>) = 0 [pid 7198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... rmdir resumed>) = 0 [pid 7199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7198] <... prctl resumed>) = 0 [pid 4996] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 4993] getdents64(3, [pid 7199] <... prctl resumed>) = 0 [pid 7198] setpgid(0, 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7199] setpgid(0, 0 [pid 7198] <... setpgid resumed>) = 0 [pid 4996] lstat("./182/binderfs", [pid 4995] getdents64(4, [pid 4993] close(3 [pid 7199] <... setpgid resumed>) = 0 [pid 7198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... close resumed>) = 0 [pid 7199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7198] <... openat resumed>) = 3 [pid 4996] unlink("./182/binderfs" [pid 4995] getdents64(4, [pid 4993] rmdir("./182" [pid 7199] <... openat resumed>) = 3 [pid 7198] write(3, "1000", 4 [pid 7197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7199] write(3, "1000", 4 [pid 7198] <... write resumed>) = 4 [pid 4996] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(4 [pid 4993] mkdir("./183", 0777 [pid 7199] <... write resumed>) = 4 [pid 7198] close(3 [pid 4995] <... close resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 7199] close(3 [pid 7198] <... close resumed>) = 0 [pid 4995] rmdir("./178/file0" [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7199] <... close resumed>) = 0 [pid 7198] symlink("/dev/binderfs", "./binderfs" [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 7199] symlink("/dev/binderfs", "./binderfs" [pid 7198] <... symlink resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7199] <... symlink resumed>) = 0 [pid 7198] memfd_create("syzkaller", 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7199] memfd_create("syzkaller", 0 [pid 7198] <... memfd_create resumed>) = 3 [pid 4995] close(3 [pid 4993] close(3 [pid 7199] <... memfd_create resumed>) = 3 [pid 7198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 7199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7198] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] rmdir("./178" [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7199] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] mkdir("./179", 0777 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7200 ./strace-static-x86_64: Process 7200 attached [pid 4995] <... mkdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7200] chdir("./183") = 0 [pid 7200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7200] setpgid(0, 0) = 0 [pid 7200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7200] write(3, "1000", 4) = 4 [pid 7200] close(3) = 0 [pid 7200] symlink("/dev/binderfs", "./binderfs") = 0 ./strace-static-x86_64: Process 7201 attached [pid 7200] memfd_create("syzkaller", 0 [pid 7199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7197] <... write resumed>) = 2097152 [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7201 [pid 7200] <... memfd_create resumed>) = 3 [pid 7200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7201] chdir("./179" [pid 7200] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7201] <... chdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./182/file0", [pid 7201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7201] <... prctl resumed>) = 0 [pid 4996] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7201] setpgid(0, 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7201] <... setpgid resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7197] munmap(0x7f46b9f9b000, 2097152 [pid 7201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... openat resumed>) = 4 [pid 7201] <... openat resumed>) = 3 [pid 4996] fstat(4, [pid 7201] write(3, "1000", 4 [pid 7197] <... munmap resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7197] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] getdents64(4, [pid 7201] <... write resumed>) = 4 [pid 7197] <... openat resumed>) = 4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7201] close(3 [pid 7197] ioctl(4, LOOP_SET_FD, 3 [pid 4996] getdents64(4, [pid 7201] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7201] symlink("/dev/binderfs", "./binderfs" [pid 4996] close(4 [pid 7201] <... symlink resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7201] memfd_create("syzkaller", 0 [pid 4996] rmdir("./182/file0" [pid 7201] <... memfd_create resumed>) = 3 [pid 7201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7201] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] getdents64(3, [pid 7200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7199] <... write resumed>) = 2097152 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 7197] <... ioctl resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7197] close(3 [pid 4996] rmdir("./182" [pid 7197] <... close resumed>) = 0 [pid 7197] mkdir("./file0", 0777) = 0 [pid 7197] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... rmdir resumed>) = 0 [ 188.829478][ T7197] loop1: detected capacity change from 0 to 4096 [pid 4996] mkdir("./183", 0777 [pid 7201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7200] <... write resumed>) = 2097152 [pid 7199] munmap(0x7f46b9f9b000, 2097152 [pid 7198] <... write resumed>) = 2097152 [pid 4996] <... mkdir resumed>) = 0 [pid 7200] munmap(0x7f46b9f9b000, 2097152 [pid 7199] <... munmap resumed>) = 0 [pid 7198] munmap(0x7f46b9f9b000, 2097152 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7200] <... munmap resumed>) = 0 [pid 7199] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 7200] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7199] <... openat resumed>) = 4 [pid 7198] <... munmap resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7201] <... write resumed>) = 2097152 [pid 7200] <... openat resumed>) = 4 [pid 7199] ioctl(4, LOOP_SET_FD, 3 [pid 7198] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7200] ioctl(4, LOOP_SET_FD, 3 [pid 4996] close(3 [pid 7200] <... ioctl resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7202 [pid 7200] close(3) = 0 [pid 7200] mkdir("./file0", 0777) = 0 [pid 7198] <... openat resumed>) = 4 [pid 7200] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7198] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7202 attached [ 188.871741][ T7197] NILFS (loop1): invalid segment: Checksum error in segment payload [ 188.879962][ T7197] NILFS (loop1): trying rollback from an earlier position [ 188.901970][ T7197] NILFS (loop1): recovery complete [ 188.906048][ T7200] loop0: detected capacity change from 0 to 4096 [ 188.907460][ T7199] loop4: detected capacity change from 0 to 4096 [pid 7202] chdir("./183") = 0 [pid 7202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7202] setpgid(0, 0) = 0 [pid 7202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7198] <... ioctl resumed>) = 0 [pid 7202] write(3, "1000", 4) = 4 [pid 7201] munmap(0x7f46b9f9b000, 2097152 [pid 7202] close(3) = 0 [pid 7202] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7201] <... munmap resumed>) = 0 [pid 7202] memfd_create("syzkaller", 0 [pid 7201] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7198] close(3 [pid 7197] <... mount resumed>) = 0 [pid 7202] <... memfd_create resumed>) = 3 [pid 7201] <... openat resumed>) = 4 [pid 7202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7201] ioctl(4, LOOP_SET_FD, 3 [pid 7202] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7199] <... ioctl resumed>) = 0 [pid 7198] <... close resumed>) = 0 [pid 7197] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7199] close(3 [pid 7198] mkdir("./file0", 0777 [pid 7197] <... openat resumed>) = 3 [pid 7199] <... close resumed>) = 0 [pid 7198] <... mkdir resumed>) = 0 [pid 7197] chdir("./file0" [pid 7199] mkdir("./file0", 0777 [pid 7198] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7197] <... chdir resumed>) = 0 [pid 7199] <... mkdir resumed>) = 0 [pid 7197] ioctl(4, LOOP_CLR_FD) = 0 [pid 7199] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7197] close(4) = 0 [pid 7197] creat("./bus", 000 [pid 7202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7197] <... creat resumed>) = 4 [ 188.925364][ T7198] loop5: detected capacity change from 0 to 4096 [ 188.941860][ T7200] NILFS (loop0): invalid segment: Checksum error in segment payload [ 188.946965][ T7203] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 188.955340][ T7201] loop2: detected capacity change from 0 to 4096 [ 188.961544][ T7200] NILFS (loop0): trying rollback from an earlier position [pid 7197] unlink("./bus") = 0 [pid 7197] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7201] <... ioctl resumed>) = 0 [pid 7201] close(3) = 0 [pid 7201] mkdir("./file0", 0777) = 0 [pid 7201] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7197] <... pwritev2 resumed>) = 65007 [ 188.994529][ T7199] NILFS (loop4): invalid segment: Checksum error in segment payload [ 189.020380][ T7198] NILFS (loop5): invalid segment: Checksum error in segment payload [ 189.030545][ T7199] NILFS (loop4): trying rollback from an earlier position [pid 7197] exit_group(0) = ? [pid 7197] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7197, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7202] <... write resumed>) = 2097152 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7200] <... mount resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 189.045507][ T7201] NILFS (loop2): invalid segment: Checksum error in segment payload [ 189.047273][ T7200] NILFS (loop0): recovery complete [ 189.059115][ T7198] NILFS (loop5): trying rollback from an earlier position [ 189.085659][ T7201] NILFS (loop2): trying rollback from an earlier position [pid 4994] fstat(3, [pid 7202] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7202] <... munmap resumed>) = 0 [pid 4994] lstat("./182/binderfs", [pid 7202] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7202] <... openat resumed>) = 4 [pid 4994] unlink("./182/binderfs" [pid 7202] ioctl(4, LOOP_SET_FD, 3 [pid 7200] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... unlink resumed>) = 0 [pid 7200] <... openat resumed>) = 3 [pid 7200] chdir("./file0") = 0 [pid 7200] ioctl(4, LOOP_CLR_FD) = 0 [pid 7200] close(4) = 0 [pid 4994] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7200] creat("./bus", 000 [pid 7202] <... ioctl resumed>) = 0 [pid 7200] <... creat resumed>) = 4 [pid 7198] <... mount resumed>) = 0 [pid 7202] close(3 [pid 7200] unlink("./bus" [pid 7198] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7202] <... close resumed>) = 0 [pid 7200] <... unlink resumed>) = 0 [pid 7198] <... openat resumed>) = 3 [pid 7202] mkdir("./file0", 0777 [pid 7200] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7198] chdir("./file0" [pid 7202] <... mkdir resumed>) = 0 [pid 7202] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7198] <... chdir resumed>) = 0 [ 189.088235][ T7204] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.104784][ T7198] NILFS (loop5): recovery complete [ 189.106185][ T7199] NILFS (loop4): recovery complete [ 189.117339][ T7202] loop3: detected capacity change from 0 to 4096 [ 189.127701][ T7205] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.137759][ T7201] NILFS (loop2): recovery complete [pid 7198] ioctl(4, LOOP_CLR_FD) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7198] close(4) = 0 [pid 7198] creat("./bus", 000 [pid 7200] <... pwritev2 resumed>) = 65007 [pid 7200] exit_group(0 [pid 7198] <... creat resumed>) = 4 [pid 7200] <... exit_group resumed>) = ? [pid 7199] <... mount resumed>) = 0 [pid 7198] unlink("./bus" [pid 7199] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7199] chdir("./file0") = 0 [pid 7199] ioctl(4, LOOP_CLR_FD) = 0 [pid 7199] close(4) = 0 [pid 7199] creat("./bus", 000 [pid 7198] <... unlink resumed>) = 0 [pid 4994] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7201] <... mount resumed>) = 0 [pid 7198] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7201] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7201] <... openat resumed>) = 3 [pid 4994] lstat("./182/file0", [pid 7201] chdir("./file0" [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7201] <... chdir resumed>) = 0 [pid 4994] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7201] ioctl(4, LOOP_CLR_FD) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7201] close(4 [pid 7198] <... pwritev2 resumed>) = 65007 [pid 4994] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7201] <... close resumed>) = 0 [pid 7198] exit_group(0 [pid 4994] <... openat resumed>) = 4 [pid 7201] creat("./bus", 000 [pid 7198] <... exit_group resumed>) = ? [pid 4994] fstat(4, [pid 7200] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7200, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=10 /* 0.10 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4993] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4993] getdents64(3, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7199] <... creat resumed>) = 4 [pid 7198] +++ exited with 0 +++ [pid 4994] getdents64(4, [pid 4993] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7199] unlink("./bus" [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7198, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] close(4 [pid 4993] lstat("./183/binderfs", [pid 7199] <... unlink resumed>) = 0 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4994] <... close resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 189.164981][ T7202] NILFS (loop3): invalid segment: Checksum error in segment payload [ 189.178907][ T7206] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.190320][ T7207] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.206795][ T7202] NILFS (loop3): trying rollback from an earlier position [pid 7199] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4994] rmdir("./182/file0" [pid 4993] unlink("./183/binderfs" [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... unlink resumed>) = 0 [pid 4994] getdents64(3, [pid 4993] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7201] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7201] unlink("./bus" [pid 4998] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./183/binderfs", [pid 7201] <... unlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... close resumed>) = 0 [pid 7201] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7199] <... pwritev2 resumed>) = 65007 [pid 4998] unlink("./183/binderfs" [pid 4994] rmdir("./182" [pid 7199] exit_group(0 [pid 4998] <... unlink resumed>) = 0 [pid 7199] <... exit_group resumed>) = ? [pid 4998] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./183", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 7201] <... pwritev2 resumed>) = 65007 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7199] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7199, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 7201] exit_group(0) = ? [pid 4997] <... restart_syscall resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7208 [pid 4997] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./183/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./183/binderfs") = 0 [pid 4997] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7208 attached [pid 7208] chdir("./183") = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./183/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7208] prctl(PR_SET_PDEATHSIG, SIGKILL [ 189.289576][ T7202] NILFS (loop3): recovery complete [pid 4997] close(4 [pid 7208] <... prctl resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 7208] setpgid(0, 0 [pid 4997] rmdir("./183/file0" [pid 7208] <... setpgid resumed>) = 0 [pid 7202] <... mount resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 7208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7202] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(3, [pid 7208] <... openat resumed>) = 3 [pid 7202] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7208] write(3, "1000", 4 [pid 7202] chdir("./file0" [pid 7201] +++ exited with 0 +++ [pid 4997] close(3 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7208] <... write resumed>) = 4 [pid 7202] <... chdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4993] lstat("./183/file0", [pid 7208] close(3 [pid 7202] ioctl(4, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = 0 [pid 4997] rmdir("./183" [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7201, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 7208] <... close resumed>) = 0 [pid 7202] <... ioctl resumed>) = 0 [pid 4998] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... rmdir resumed>) = 0 [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7208] symlink("/dev/binderfs", "./binderfs" [pid 7202] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] mkdir("./184", 0777 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7208] <... symlink resumed>) = 0 [pid 7202] <... close resumed>) = 0 [pid 4998] lstat("./183/file0", [pid 4997] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7208] memfd_create("syzkaller", 0 [pid 7202] creat("./bus", 000 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7208] <... memfd_create resumed>) = 3 [pid 4995] umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7208] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7202] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] fstat(3, [pid 7202] unlink("./bus" [pid 4998] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4995] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] unlink("./179/binderfs") = 0 [pid 4995] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 4 [pid 4993] fstat(4, [pid 7202] <... unlink resumed>) = 0 [pid 4998] fstat(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7202] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [ 189.324304][ T7209] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(4, [pid 4993] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4993] close(4 [pid 4998] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4998] rmdir("./183/file0" [pid 4993] rmdir("./183/file0" [pid 4998] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] getdents64(3, [pid 7208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7202] <... pwritev2 resumed>) = 65007 [pid 4998] close(3) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7202] exit_group(0 [pid 4998] rmdir("./183" [pid 4993] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 7202] <... exit_group resumed>) = ? [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... close resumed>) = 0 [pid 4998] mkdir("./184", 0777 [pid 4997] close(3 [pid 4993] rmdir("./183" [pid 4997] <... close resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] <... rmdir resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7210 [pid 4993] mkdir("./184", 0777./strace-static-x86_64: Process 7210 attached [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] close(3 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... close resumed>) = 0 [pid 4995] lstat("./179/file0", [pid 4993] <... openat resumed>) = 3 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7210] chdir("./184" [pid 4995] umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7211 attached [pid 7210] <... chdir resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7211 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7211] chdir("./184" [pid 7210] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 7211] <... chdir resumed>) = 0 [pid 7210] <... prctl resumed>) = 0 [pid 7202] +++ exited with 0 +++ [pid 4995] <... openat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 7211] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7210] setpgid(0, 0 [pid 4995] fstat(4, [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7211] <... prctl resumed>) = 0 [pid 7210] <... setpgid resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7202, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7211] setpgid(0, 0 [pid 7210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4995] getdents64(4, [pid 7211] <... setpgid resumed>) = 0 [pid 7210] <... openat resumed>) = 3 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7212 [pid 7211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7210] write(3, "1000", 4 [pid 4995] getdents64(4, [pid 7211] <... openat resumed>) = 3 [pid 7210] <... write resumed>) = 4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 7212 attached [pid 7211] write(3, "1000", 4 [pid 7210] close(3 [pid 4996] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(4 [pid 7212] chdir("./184" [pid 7211] <... write resumed>) = 4 [pid 7210] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 7212] <... chdir resumed>) = 0 [pid 7211] close(3 [pid 7210] symlink("/dev/binderfs", "./binderfs" [pid 4996] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] rmdir("./179/file0" [pid 7212] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7211] <... close resumed>) = 0 [pid 7210] <... symlink resumed>) = 0 [pid 7208] <... write resumed>) = 2097152 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 7212] <... prctl resumed>) = 0 [pid 7211] symlink("/dev/binderfs", "./binderfs" [pid 7210] memfd_create("syzkaller", 0 [pid 7208] munmap(0x7f46b9f9b000, 2097152 [pid 4996] fstat(3, [pid 4995] getdents64(3, [pid 7210] <... memfd_create resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7212] setpgid(0, 0 [pid 7210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(3, [pid 4995] close(3 [pid 7212] <... setpgid resumed>) = 0 [pid 7211] <... symlink resumed>) = 0 [pid 7210] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... close resumed>) = 0 [pid 7212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7211] memfd_create("syzkaller", 0 [pid 7208] <... munmap resumed>) = 0 [pid 4996] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./179" [pid 7212] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... rmdir resumed>) = 0 [pid 7211] <... memfd_create resumed>) = 3 [pid 7208] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] lstat("./183/binderfs", [pid 4995] mkdir("./180", 0777 [pid 7212] write(3, "1000", 4 [pid 7211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7208] <... openat resumed>) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 7212] <... write resumed>) = 4 [pid 7211] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7208] ioctl(4, LOOP_SET_FD, 3 [pid 4996] unlink("./183/binderfs" [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7212] close(3 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4996] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7213 ./strace-static-x86_64: Process 7213 attached [pid 7213] chdir("./180") = 0 [pid 7213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7213] setpgid(0, 0) = 0 [pid 7213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7212] <... close resumed>) = 0 [pid 7212] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7212] memfd_create("syzkaller", 0) = 3 [pid 7212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7213] <... openat resumed>) = 3 [pid 7212] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7213] write(3, "1000", 4 [pid 7210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7213] <... write resumed>) = 4 [pid 7213] close(3) = 0 [pid 7213] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7213] memfd_create("syzkaller", 0) = 3 [pid 7213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7208] <... ioctl resumed>) = 0 [pid 7213] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7208] close(3) = 0 [pid 7212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7208] mkdir("./file0", 0777) = 0 [ 189.494563][ T7208] loop1: detected capacity change from 0 to 4096 [pid 7208] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./183/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./183/file0") = 0 [pid 4996] getdents64(3, [pid 7213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./183") = 0 [pid 4996] mkdir("./184", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7214 [pid 7210] <... write resumed>) = 2097152 ./strace-static-x86_64: Process 7214 attached [pid 7210] munmap(0x7f46b9f9b000, 2097152 [pid 7214] chdir("./184") = 0 [pid 7214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7210] <... munmap resumed>) = 0 [pid 7214] setpgid(0, 0 [pid 7210] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7214] <... setpgid resumed>) = 0 [pid 7210] <... openat resumed>) = 4 [pid 7214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 189.565040][ T7208] NILFS (loop1): invalid segment: Checksum error in segment payload [ 189.602501][ T7208] NILFS (loop1): trying rollback from an earlier position [pid 7210] ioctl(4, LOOP_SET_FD, 3 [pid 7214] <... openat resumed>) = 3 [pid 7212] <... write resumed>) = 2097152 [pid 7211] <... write resumed>) = 2097152 [pid 7210] <... ioctl resumed>) = 0 [pid 7214] write(3, "1000", 4 [pid 7212] munmap(0x7f46b9f9b000, 2097152 [pid 7211] munmap(0x7f46b9f9b000, 2097152 [pid 7214] <... write resumed>) = 4 [pid 7214] close(3) = 0 [pid 7211] <... munmap resumed>) = 0 [pid 7214] symlink("/dev/binderfs", "./binderfs" [pid 7211] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7214] <... symlink resumed>) = 0 [pid 7212] <... munmap resumed>) = 0 [pid 7214] memfd_create("syzkaller", 0 [pid 7212] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7211] <... openat resumed>) = 4 [pid 7214] <... memfd_create resumed>) = 3 [pid 7212] <... openat resumed>) = 4 [pid 7211] ioctl(4, LOOP_SET_FD, 3 [pid 7214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7212] ioctl(4, LOOP_SET_FD, 3 [pid 7214] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7210] close(3) = 0 [pid 7210] mkdir("./file0", 0777) = 0 [pid 7210] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 189.636086][ T7210] loop4: detected capacity change from 0 to 4096 [ 189.654049][ T7211] loop5: detected capacity change from 0 to 4096 [ 189.661023][ T7212] loop0: detected capacity change from 0 to 4096 [ 189.669590][ T7208] NILFS (loop1): recovery complete [pid 7212] <... ioctl resumed>) = 0 [pid 7211] <... ioctl resumed>) = 0 [pid 7214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7213] <... write resumed>) = 2097152 [pid 7212] close(3 [pid 7211] close(3 [pid 7208] <... mount resumed>) = 0 [pid 7213] munmap(0x7f46b9f9b000, 2097152 [pid 7212] <... close resumed>) = 0 [pid 7211] <... close resumed>) = 0 [pid 7208] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7212] mkdir("./file0", 0777 [pid 7211] mkdir("./file0", 0777 [pid 7208] <... openat resumed>) = 3 [pid 7213] <... munmap resumed>) = 0 [pid 7212] <... mkdir resumed>) = 0 [pid 7211] <... mkdir resumed>) = 0 [pid 7208] chdir("./file0" [pid 7213] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7212] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7211] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7208] <... chdir resumed>) = 0 [pid 7214] <... write resumed>) = 2097152 [pid 7214] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7208] ioctl(4, LOOP_CLR_FD) = 0 [ 189.679214][ T7215] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.679729][ T7210] NILFS (loop4): invalid segment: Checksum error in segment payload [ 189.698734][ T7210] NILFS (loop4): trying rollback from an earlier position [ 189.715771][ T7212] NILFS (loop0): invalid segment: Checksum error in segment payload [ 189.715776][ T7210] NILFS (loop4): recovery complete [ 189.715795][ T7212] NILFS (loop0): trying rollback from an earlier position [pid 7214] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7214] ioctl(4, LOOP_SET_FD, 3 [pid 7213] <... openat resumed>) = 4 [pid 7208] close(4 [pid 7213] ioctl(4, LOOP_SET_FD, 3 [pid 7208] <... close resumed>) = 0 [pid 7210] <... mount resumed>) = 0 [pid 7208] creat("./bus", 000 [pid 7210] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7210] chdir("./file0") = 0 [pid 7210] ioctl(4, LOOP_CLR_FD) = 0 [pid 7210] close(4) = 0 [pid 7210] creat("./bus", 000 [pid 7213] <... ioctl resumed>) = 0 [pid 7213] close(3 [pid 7208] <... creat resumed>) = 4 [pid 7213] <... close resumed>) = 0 [pid 7213] mkdir("./file0", 0777 [pid 7208] unlink("./bus") = 0 [pid 7213] <... mkdir resumed>) = 0 [pid 7208] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7214] <... ioctl resumed>) = 0 [pid 7214] close(3) = 0 [pid 7214] mkdir("./file0", 0777) = 0 [pid 7214] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7213] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7208] <... pwritev2 resumed>) = 65007 [pid 7208] exit_group(0) = ? [ 189.742020][ T7211] NILFS (loop5): invalid segment: Checksum error in segment payload [ 189.744581][ T7214] loop3: detected capacity change from 0 to 4096 [ 189.750742][ T7211] NILFS (loop5): trying rollback from an earlier position [ 189.758760][ T7216] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.776374][ T7213] loop2: detected capacity change from 0 to 4096 [pid 7210] <... creat resumed>) = 4 [pid 7210] unlink("./bus") = 0 [pid 7210] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7208] +++ exited with 0 +++ [ 189.823151][ T7213] NILFS (loop2): invalid segment: Checksum error in segment payload [ 189.829764][ T7214] NILFS (loop3): invalid segment: Checksum error in segment payload [ 189.849764][ T7214] NILFS (loop3): trying rollback from an earlier position [ 189.858353][ T7211] NILFS (loop5): recovery complete [ 189.864470][ T7212] NILFS (loop0): recovery complete [pid 7211] <... mount resumed>) = 0 [pid 7211] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7208, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 7211] <... openat resumed>) = 3 [pid 7211] chdir("./file0" [pid 4994] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7211] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7211] ioctl(4, LOOP_CLR_FD) = 0 [pid 4994] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7211] close(4) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7211] creat("./bus", 000 [pid 7210] <... pwritev2 resumed>) = 65007 [pid 4994] fstat(3, [pid 7212] <... mount resumed>) = 0 [pid 7210] exit_group(0 [pid 7212] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7210] <... exit_group resumed>) = ? [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7212] <... openat resumed>) = 3 [pid 7210] +++ exited with 0 +++ [pid 4994] getdents64(3, [pid 7212] chdir("./file0") = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7210, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7212] ioctl(4, LOOP_CLR_FD [pid 4997] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7212] <... ioctl resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7212] close(4 [pid 4997] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7212] <... close resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4994] lstat("./183/binderfs", [pid 7212] creat("./bus", 000 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] getdents64(3, [pid 4994] unlink("./183/binderfs" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 189.872307][ T7217] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 189.877815][ T7213] NILFS (loop2): trying rollback from an earlier position [ 189.896286][ T7218] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] lstat("./184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./184/binderfs") = 0 [pid 4997] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7212] <... creat resumed>) = 4 [pid 7212] unlink("./bus") = 0 [pid 7212] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7211] <... creat resumed>) = 4 [pid 7211] unlink("./bus" [pid 7212] <... pwritev2 resumed>) = 65007 [pid 7211] <... unlink resumed>) = 0 [pid 7212] exit_group(0 [pid 7211] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 189.925930][ T7214] NILFS (loop3): recovery complete [pid 7212] <... exit_group resumed>) = ? [pid 7214] <... mount resumed>) = 0 [pid 7214] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7214] chdir("./file0") = 0 [pid 7214] ioctl(4, LOOP_CLR_FD) = 0 [pid 7214] close(4) = 0 [pid 7214] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./184/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7212] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7212, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7211] <... pwritev2 resumed>) = 65007 [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7211] exit_group(0 [pid 4997] <... openat resumed>) = 4 [pid 4993] <... restart_syscall resumed>) = 0 [pid 7211] <... exit_group resumed>) = ? [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(4 [pid 4993] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./184/file0" [pid 4993] <... openat resumed>) = 3 [pid 4997] <... rmdir resumed>) = 0 [pid 4993] fstat(3, [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] rmdir("./184" [pid 4993] getdents64(3, [pid 4997] <... rmdir resumed>) = 0 [pid 4997] mkdir("./185", 0777 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... mkdir resumed>) = 0 [pid 4993] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7211] +++ exited with 0 +++ [pid 4997] <... openat resumed>) = 3 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7211, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] lstat("./184/binderfs", [pid 7213] <... mount resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7213] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] close(3 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7213] <... openat resumed>) = 3 [pid 4998] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] unlink("./184/binderfs" [pid 7213] chdir("./file0" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7213] <... chdir resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] lstat("./183/file0", [pid 4993] <... unlink resumed>) = 0 [pid 7213] ioctl(4, LOOP_CLR_FD [pid 4998] <... openat resumed>) = 3 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7221 [pid 7213] <... ioctl resumed>) = 0 [pid 4998] fstat(3, [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7213] close(4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7213] <... close resumed>) = 0 [pid 4998] getdents64(3, [pid 4994] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7213] creat("./bus", 000 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 7221 attached [pid 7221] chdir("./185") = 0 [pid 7221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7221] setpgid(0, 0) = 0 [pid 7221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7221] write(3, "1000", 4) = 4 [ 189.983134][ T7213] NILFS (loop2): recovery complete [ 189.990136][ T7219] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.020188][ T7220] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7221] close(3) = 0 [pid 7221] symlink("/dev/binderfs", "./binderfs" [pid 4998] lstat("./184/binderfs", [pid 7221] <... symlink resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7221] memfd_create("syzkaller", 0 [pid 4998] unlink("./184/binderfs" [pid 7221] <... memfd_create resumed>) = 3 [pid 4998] <... unlink resumed>) = 0 [pid 4994] <... openat resumed>) = 4 [pid 7221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7221] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] fstat(4, [pid 7214] <... creat resumed>) = 4 [pid 4993] <... umount2 resumed>) = 0 [pid 7214] unlink("./bus" [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7214] <... unlink resumed>) = 0 [pid 4993] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7214] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7214] <... pwritev2 resumed>) = 65007 [pid 4994] getdents64(4, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7214] exit_group(0 [pid 7213] <... creat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] lstat("./184/file0", [pid 7214] <... exit_group resumed>) = ? [pid 7213] unlink("./bus" [pid 4994] close(4) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] rmdir("./183/file0" [pid 7213] <... unlink resumed>) = 0 [pid 4993] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7213] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 4993] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4994] close(3 [pid 4993] fstat(4, [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./183" [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] getdents64(4, [pid 4994] mkdir("./184", 0777 [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] getdents64(4, [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4993] close(4 [pid 7214] +++ exited with 0 +++ [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... close resumed>) = 0 [pid 7213] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] rmdir("./184/file0" [pid 7221] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7213] exit_group(0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7214, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] close(3 [pid 4993] <... rmdir resumed>) = 0 [pid 7213] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... close resumed>) = 0 [pid 4998] lstat("./184/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] getdents64(3, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] fstat(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] close(3 [pid 4998] <... openat resumed>) = 4 [pid 4996] getdents64(3, [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7222 [pid 4998] fstat(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] rmdir("./184" [pid 7213] +++ exited with 0 +++ [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] lstat("./184/binderfs", [pid 4993] <... rmdir resumed>) = 0 [pid 4998] getdents64(4, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7213, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] mkdir("./185", 0777 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] unlink("./184/binderfs" [pid 4995] umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] close(4 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... mkdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4996] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7222 attached [pid 4998] rmdir("./184/file0" [pid 4995] <... openat resumed>) = 3 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7222] chdir("./184" [pid 7221] <... write resumed>) = 2097152 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] fstat(3, [pid 4993] <... openat resumed>) = 3 [pid 7222] <... chdir resumed>) = 0 [pid 7221] munmap(0x7f46b9f9b000, 2097152 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7221] <... munmap resumed>) = 0 [pid 4998] getdents64(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7222] <... prctl resumed>) = 0 [pid 7221] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(3, [pid 4993] close(3 [pid 7222] setpgid(0, 0 [pid 7221] <... openat resumed>) = 4 [pid 4998] close(3 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... close resumed>) = 0 [pid 7222] <... setpgid resumed>) = 0 [pid 7221] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... close resumed>) = 0 [pid 4995] umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] rmdir("./184" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7222] <... openat resumed>) = 3 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7223 [pid 7222] write(3, "1000", 4) = 4 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] lstat("./180/binderfs", [pid 7222] close(3 [pid 4998] mkdir("./185", 0777 [pid 7222] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7222] symlink("/dev/binderfs", "./binderfs" [pid 4995] unlink("./180/binderfs" [pid 7222] <... symlink resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 7222] memfd_create("syzkaller", 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] <... unlink resumed>) = 0 [pid 7222] <... memfd_create resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4995] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 7222] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] <... umount2 resumed>) = 0 [pid 4998] close(3./strace-static-x86_64: Process 7223 attached ) = 0 [pid 7223] chdir("./185" [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7223] <... chdir resumed>) = 0 [pid 7223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7223] setpgid(0, 0) = 0 [pid 7223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7223] write(3, "1000", 4) = 4 [pid 7223] close(3) = 0 [pid 7223] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7223] memfd_create("syzkaller", 0) = 3 [pid 7223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7221] <... ioctl resumed>) = 0 [pid 7221] close(3) = 0 [pid 7221] mkdir("./file0", 0777) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7224 [pid 7221] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7224 attached ) = -1 EINVAL (Invalid argument) [ 190.198147][ T7221] loop4: detected capacity change from 0 to 4096 [pid 4996] lstat("./184/file0", [pid 7224] chdir("./185" [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = 0 [pid 7224] <... chdir resumed>) = 0 [pid 7224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7224] setpgid(0, 0) = 0 [pid 4996] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7224] <... openat resumed>) = 3 [pid 4996] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] lstat("./180/file0", [pid 7224] write(3, "1000", 4 [pid 7222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... openat resumed>) = 4 [pid 7224] <... write resumed>) = 4 [pid 4996] fstat(4, [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7224] close(3) = 0 [pid 7224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7224] memfd_create("syzkaller", 0 [pid 7223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] getdents64(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7224] <... memfd_create resumed>) = 3 [pid 7224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] fstat(4, [pid 4996] close(4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./184/file0" [pid 4995] getdents64(4, [pid 4996] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(3, [pid 4995] getdents64(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 4995] close(4 [pid 4996] <... close resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 4996] rmdir("./184" [pid 4995] rmdir("./180/file0" [pid 4996] <... rmdir resumed>) = 0 [pid 4996] mkdir("./185", 0777 [pid 4995] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4996] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] close(3 [pid 4996] <... openat resumed>) = 3 [pid 4995] <... close resumed>) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4995] rmdir("./180" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... rmdir resumed>) = 0 [pid 4996] close(3 [pid 4995] mkdir("./181", 0777) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 3 [pid 7224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4995] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7225 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7226 [pid 7222] <... write resumed>) = 2097152 [pid 7222] munmap(0x7f46b9f9b000, 2097152./strace-static-x86_64: Process 7225 attached [pid 7225] chdir("./185") = 0 [pid 7225] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7222] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 7226 attached [pid 7225] <... prctl resumed>) = 0 [pid 7226] chdir("./181" [pid 7225] setpgid(0, 0 [pid 7226] <... chdir resumed>) = 0 [pid 7225] <... setpgid resumed>) = 0 [pid 7222] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7222] <... openat resumed>) = 4 [pid 7226] <... prctl resumed>) = 0 [pid 7225] <... openat resumed>) = 3 [ 190.252787][ T7221] NILFS (loop4): invalid segment: Checksum error in segment payload [ 190.282587][ T7221] NILFS (loop4): trying rollback from an earlier position [pid 7222] ioctl(4, LOOP_SET_FD, 3 [pid 7226] setpgid(0, 0 [pid 7225] write(3, "1000", 4 [pid 7222] <... ioctl resumed>) = 0 [pid 7226] <... setpgid resumed>) = 0 [pid 7225] <... write resumed>) = 4 [pid 7226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7225] close(3 [pid 7226] <... openat resumed>) = 3 [pid 7225] <... close resumed>) = 0 [pid 7226] write(3, "1000", 4 [pid 7225] symlink("/dev/binderfs", "./binderfs" [pid 7226] <... write resumed>) = 4 [pid 7225] <... symlink resumed>) = 0 [pid 7226] close(3 [pid 7225] memfd_create("syzkaller", 0 [pid 7226] <... close resumed>) = 0 [pid 7225] <... memfd_create resumed>) = 3 [pid 7226] symlink("/dev/binderfs", "./binderfs" [pid 7225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7226] <... symlink resumed>) = 0 [pid 7225] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7226] memfd_create("syzkaller", 0 [pid 7224] <... write resumed>) = 2097152 [pid 7223] <... write resumed>) = 2097152 [pid 7222] close(3 [pid 7224] munmap(0x7f46b9f9b000, 2097152 [pid 7223] munmap(0x7f46b9f9b000, 2097152 [pid 7222] <... close resumed>) = 0 [pid 7226] <... memfd_create resumed>) = 3 [pid 7224] <... munmap resumed>) = 0 [pid 7223] <... munmap resumed>) = 0 [pid 7222] mkdir("./file0", 0777 [pid 7226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7224] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7223] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7222] <... mkdir resumed>) = 0 [pid 7226] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7224] <... openat resumed>) = 4 [pid 7223] <... openat resumed>) = 4 [ 190.334255][ T7222] loop1: detected capacity change from 0 to 4096 [ 190.366390][ T7221] NILFS (loop4): recovery complete [pid 7222] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7224] ioctl(4, LOOP_SET_FD, 3 [pid 7223] ioctl(4, LOOP_SET_FD, 3 [pid 7221] <... mount resumed>) = 0 [pid 7226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7221] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7223] <... ioctl resumed>) = 0 [pid 7223] close(3) = 0 [pid 7223] mkdir("./file0", 0777) = 0 [pid 7223] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7224] <... ioctl resumed>) = 0 [pid 7224] close(3 [pid 7221] <... openat resumed>) = 3 [pid 7221] chdir("./file0") = 0 [pid 7221] ioctl(4, LOOP_CLR_FD) = 0 [pid 7221] close(4) = 0 [ 190.384999][ T7222] NILFS (loop1): invalid segment: Checksum error in segment payload [ 190.393028][ T7222] NILFS (loop1): trying rollback from an earlier position [ 190.394335][ T7227] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.401721][ T7224] loop5: detected capacity change from 0 to 4096 [ 190.418016][ T7223] loop0: detected capacity change from 0 to 4096 [pid 7221] creat("./bus", 000 [pid 7226] <... write resumed>) = 2097152 [pid 7221] <... creat resumed>) = 4 [pid 7221] unlink("./bus" [pid 7222] <... mount resumed>) = 0 [pid 7221] <... unlink resumed>) = 0 [pid 7221] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7224] <... close resumed>) = 0 [pid 7224] mkdir("./file0", 0777 [pid 7222] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7224] <... mkdir resumed>) = 0 [pid 7224] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7222] <... openat resumed>) = 3 [pid 7226] munmap(0x7f46b9f9b000, 2097152 [pid 7225] <... write resumed>) = 2097152 [pid 7222] chdir("./file0" [pid 7226] <... munmap resumed>) = 0 [pid 7225] munmap(0x7f46b9f9b000, 2097152 [pid 7222] <... chdir resumed>) = 0 [pid 7221] <... pwritev2 resumed>) = 65007 [pid 7226] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7225] <... munmap resumed>) = 0 [pid 7222] ioctl(4, LOOP_CLR_FD [pid 7221] exit_group(0 [pid 7226] <... openat resumed>) = 4 [pid 7225] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7222] <... ioctl resumed>) = 0 [pid 7221] <... exit_group resumed>) = ? [ 190.445888][ T7222] NILFS (loop1): recovery complete [ 190.448786][ T7223] NILFS (loop0): invalid segment: Checksum error in segment payload [ 190.463138][ T7228] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.484176][ T7223] NILFS (loop0): trying rollback from an earlier position [pid 7226] ioctl(4, LOOP_SET_FD, 3 [pid 7225] <... openat resumed>) = 4 [pid 7222] close(4 [pid 7225] ioctl(4, LOOP_SET_FD, 3 [pid 7222] <... close resumed>) = 0 [pid 7222] creat("./bus", 000 [pid 7226] <... ioctl resumed>) = 0 [pid 7226] close(3) = 0 [pid 7226] mkdir("./file0", 0777 [pid 7222] <... creat resumed>) = 4 [pid 7226] <... mkdir resumed>) = 0 [pid 7222] unlink("./bus" [pid 7226] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7222] <... unlink resumed>) = 0 [pid 7222] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7221] +++ exited with 0 +++ [pid 7225] <... ioctl resumed>) = 0 [pid 7225] close(3) = 0 [pid 7225] mkdir("./file0", 0777) = 0 [ 190.510120][ T7226] loop2: detected capacity change from 0 to 4096 [ 190.511433][ T7223] NILFS (loop0): recovery complete [ 190.517534][ T7225] loop3: detected capacity change from 0 to 4096 [ 190.535698][ T7224] NILFS (loop5): invalid segment: Checksum error in segment payload [ 190.546189][ T7226] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 7222] <... pwritev2 resumed>) = 65007 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7221, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 7222] exit_group(0 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 7222] <... exit_group resumed>) = ? [pid 4997] <... restart_syscall resumed>) = 0 [pid 7223] <... mount resumed>) = 0 [pid 7222] +++ exited with 0 +++ [pid 7225] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7223] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7222, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 7223] chdir("./file0" [pid 4997] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 7223] <... chdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... restart_syscall resumed>) = 0 [pid 7223] ioctl(4, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7223] <... ioctl resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 7223] close(4 [pid 4997] fstat(3, [pid 4994] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7223] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7223] creat("./bus", 000 [pid 4997] getdents64(3, [pid 4994] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... openat resumed>) = 3 [ 190.557778][ T7224] NILFS (loop5): trying rollback from an earlier position [ 190.570613][ T7229] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.590171][ T7224] NILFS (loop5): recovery complete [ 190.599373][ T7226] NILFS (loop2): trying rollback from an earlier position [pid 7224] <... mount resumed>) = 0 [pid 4997] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 7224] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7224] chdir("./file0") = 0 [pid 7224] ioctl(4, LOOP_CLR_FD) = 0 [pid 7224] close(4) = 0 [pid 7224] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] lstat("./185/binderfs", [pid 4994] getdents64(3, [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] unlink("./185/binderfs" [pid 7223] <... creat resumed>) = 4 [pid 4994] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 7223] unlink("./bus" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./184/binderfs" [pid 4997] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 7223] <... unlink resumed>) = 0 [pid 7223] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 190.603020][ T7230] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.613053][ T7225] NILFS (loop3): invalid segment: Checksum error in segment payload [ 190.637557][ T7225] NILFS (loop3): trying rollback from an earlier position [ 190.640438][ T7226] NILFS (loop2): recovery complete [pid 4994] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7226] <... mount resumed>) = 0 [pid 7226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7226] chdir("./file0") = 0 [pid 7226] ioctl(4, LOOP_CLR_FD) = 0 [pid 7223] <... pwritev2 resumed>) = 65007 [pid 7226] close(4 [pid 7223] exit_group(0 [pid 7226] <... close resumed>) = 0 [pid 7224] <... creat resumed>) = 4 [pid 7223] <... exit_group resumed>) = ? [pid 7224] unlink("./bus" [pid 7226] creat("./bus", 000) = 4 [pid 7226] unlink("./bus") = 0 [pid 7224] <... unlink resumed>) = 0 [pid 7223] +++ exited with 0 +++ [pid 4994] <... umount2 resumed>) = 0 [pid 7226] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7224] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7223, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4994] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./185/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./185/binderfs" [pid 4994] lstat("./184/file0", [pid 4993] <... unlink resumed>) = 0 [ 190.669185][ T7231] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 190.698297][ T7225] NILFS (loop3): recovery complete [pid 7226] <... pwritev2 resumed>) = 65007 [pid 7225] <... mount resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7226] exit_group(0 [pid 7225] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7226] <... exit_group resumed>) = ? [pid 7225] <... openat resumed>) = 3 [pid 7225] chdir("./file0" [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7225] <... chdir resumed>) = 0 [pid 7224] <... pwritev2 resumed>) = 65007 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... openat resumed>) = 4 [pid 7225] ioctl(4, LOOP_CLR_FD [pid 7224] exit_group(0 [pid 4997] lstat("./185/file0", [pid 7226] +++ exited with 0 +++ [pid 4994] fstat(4, [pid 7225] <... ioctl resumed>) = 0 [pid 7224] <... exit_group resumed>) = ? [pid 4993] <... umount2 resumed>) = 0 [pid 7225] close(4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7226, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=5 /* 0.05 s */} --- [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7225] <... close resumed>) = 0 [pid 7224] +++ exited with 0 +++ [pid 4997] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4994] getdents64(4, [pid 4993] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7225] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... restart_syscall resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 190.749599][ T7232] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7225] <... creat resumed>) = 4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7224, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(4, [pid 4993] lstat("./185/file0", [pid 7225] unlink("./bus" [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7225] <... unlink resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 4997] fstat(4, [pid 4995] umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(4 [pid 4993] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7225] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(4, [pid 4995] openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] rmdir("./184/file0" [pid 4993] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... openat resumed>) = 3 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(4, [pid 4995] fstat(3, [pid 4994] getdents64(3, [pid 4993] fstat(4, [pid 4998] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] close(4 [pid 4995] getdents64(3, [pid 4994] close(3 [pid 4993] getdents64(4, [pid 4998] fstat(3, [pid 4997] <... close resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] rmdir("./185/file0" [pid 4995] umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./184" [pid 4993] getdents64(4, [pid 4998] getdents64(3, [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(3, [pid 4995] lstat("./181/binderfs", [pid 4994] mkdir("./185", 0777 [pid 4993] close(4 [pid 4998] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./185/file0") = 0 [pid 4993] getdents64(3, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] unlink("./181/binderfs" [pid 4993] close(3 [pid 4998] lstat("./185/binderfs", [pid 4997] <... close resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./185") = 0 [pid 4993] mkdir("./186", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] rmdir("./185" [pid 4995] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4998] unlink("./185/binderfs" [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... rmdir resumed>) = 0 [pid 4993] close(3 [pid 4998] <... unlink resumed>) = 0 [pid 4997] mkdir("./186", 0777 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... close resumed>) = 0 [pid 4998] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4994] <... close resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7233 [pid 4997] <... close resumed>) = 0 ./strace-static-x86_64: Process 7233 attached [pid 7225] <... pwritev2 resumed>) = 65007 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7233] chdir("./185" [pid 7225] exit_group(0 [pid 7233] <... chdir resumed>) = 0 [pid 7225] <... exit_group resumed>) = ? [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7234 ./strace-static-x86_64: Process 7234 attached [pid 7233] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] <... umount2 resumed>) = 0 [pid 7233] <... prctl resumed>) = 0 [pid 7225] +++ exited with 0 +++ [pid 7234] chdir("./186" [pid 7233] setpgid(0, 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7235 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7225, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 7234] <... chdir resumed>) = 0 [pid 7233] <... setpgid resumed>) = 0 [pid 4996] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 7235 attached [pid 7234] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... umount2 resumed>) = 0 [pid 4996] <... restart_syscall resumed>) = 0 [pid 4995] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7235] chdir("./186" [pid 7234] <... prctl resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7235] <... chdir resumed>) = 0 [pid 7234] setpgid(0, 0 [pid 7233] <... openat resumed>) = 3 [pid 4998] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./181/file0", [pid 7235] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7234] <... setpgid resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7235] <... prctl resumed>) = 0 [pid 7234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7233] write(3, "1000", 4 [pid 4998] lstat("./185/file0", [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7235] setpgid(0, 0 [pid 7234] <... openat resumed>) = 3 [pid 7233] <... write resumed>) = 4 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7235] <... setpgid resumed>) = 0 [pid 7234] write(3, "1000", 4 [pid 7233] close(3 [pid 4998] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7234] <... write resumed>) = 4 [pid 7233] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] fstat(3, [pid 4995] <... openat resumed>) = 4 [pid 7235] <... openat resumed>) = 3 [pid 7234] close(3 [pid 7233] symlink("/dev/binderfs", "./binderfs" [pid 4998] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(4, [pid 7235] write(3, "1000", 4 [pid 7234] <... close resumed>) = 0 [pid 7233] <... symlink resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4996] getdents64(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7235] <... write resumed>) = 4 [pid 7234] symlink("/dev/binderfs", "./binderfs" [pid 7233] memfd_create("syzkaller", 0 [pid 4998] fstat(4, [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] getdents64(4, [pid 7235] close(3 [pid 7234] <... symlink resumed>) = 0 [pid 7233] <... memfd_create resumed>) = 3 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7235] <... close resumed>) = 0 [pid 7234] memfd_create("syzkaller", 0 [pid 7233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] getdents64(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] getdents64(4, [pid 7235] symlink("/dev/binderfs", "./binderfs" [pid 7234] <... memfd_create resumed>) = 3 [pid 7233] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] lstat("./185/binderfs", [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7235] <... symlink resumed>) = 0 [pid 7234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] getdents64(4, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] close(4 [pid 7235] memfd_create("syzkaller", 0 [pid 7234] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] unlink("./185/binderfs" [pid 4995] <... close resumed>) = 0 [pid 7235] <... memfd_create resumed>) = 3 [pid 4998] close(4 [pid 4996] <... unlink resumed>) = 0 [pid 4995] rmdir("./181/file0" [pid 7235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... close resumed>) = 0 [pid 4996] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... rmdir resumed>) = 0 [pid 7235] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] rmdir("./185/file0" [pid 4995] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] getdents64(3, [pid 4995] close(3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] close(3 [pid 4995] rmdir("./181" [pid 4998] <... close resumed>) = 0 [pid 4995] <... rmdir resumed>) = 0 [pid 4998] rmdir("./185" [pid 4995] mkdir("./182", 0777 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4998] mkdir("./186", 0777 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... mkdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] <... openat resumed>) = 3 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] close(3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] <... close resumed>) = 0 [pid 4998] close(3 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7236 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7237 ./strace-static-x86_64: Process 7236 attached [pid 7236] chdir("./182"./strace-static-x86_64: Process 7237 attached [pid 7237] chdir("./186" [pid 7236] <... chdir resumed>) = 0 [pid 7237] <... chdir resumed>) = 0 [pid 7236] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7237] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7236] <... prctl resumed>) = 0 [pid 7237] <... prctl resumed>) = 0 [pid 7236] setpgid(0, 0 [pid 7237] setpgid(0, 0 [pid 7236] <... setpgid resumed>) = 0 [pid 7237] <... setpgid resumed>) = 0 [pid 7236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7236] <... openat resumed>) = 3 [pid 7233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7237] <... openat resumed>) = 3 [pid 7236] write(3, "1000", 4 [pid 4996] <... umount2 resumed>) = 0 [pid 7237] write(3, "1000", 4 [pid 7236] <... write resumed>) = 4 [pid 7237] <... write resumed>) = 4 [pid 7236] close(3 [pid 7237] close(3 [pid 7236] <... close resumed>) = 0 [pid 7237] <... close resumed>) = 0 [pid 7236] symlink("/dev/binderfs", "./binderfs" [pid 7237] symlink("/dev/binderfs", "./binderfs" [pid 7236] <... symlink resumed>) = 0 [pid 7237] <... symlink resumed>) = 0 [pid 7236] memfd_create("syzkaller", 0 [pid 7237] memfd_create("syzkaller", 0 [pid 7236] <... memfd_create resumed>) = 3 [pid 7237] <... memfd_create resumed>) = 3 [pid 7236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7236] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7237] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./185/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 7233] <... write resumed>) = 2097152 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7233] munmap(0x7f46b9f9b000, 2097152 [pid 4996] close(4 [pid 7233] <... munmap resumed>) = 0 [pid 7233] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... close resumed>) = 0 [pid 7236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7233] <... openat resumed>) = 4 [pid 4996] rmdir("./185/file0" [pid 7235] <... write resumed>) = 2097152 [pid 7234] <... write resumed>) = 2097152 [pid 7233] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... rmdir resumed>) = 0 [pid 7235] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7235] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7234] munmap(0x7f46b9f9b000, 2097152 [pid 7235] <... openat resumed>) = 4 [pid 7235] ioctl(4, LOOP_SET_FD, 3 [pid 7234] <... munmap resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7233] <... ioctl resumed>) = 0 [pid 4996] close(3 [pid 7234] ioctl(4, LOOP_SET_FD, 3 [pid 7233] close(3 [pid 4996] <... close resumed>) = 0 [pid 7233] <... close resumed>) = 0 [pid 4996] rmdir("./185" [pid 7233] mkdir("./file0", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 7233] <... mkdir resumed>) = 0 [pid 4996] mkdir("./186", 0777 [pid 7233] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 7234] <... ioctl resumed>) = 0 [pid 7234] close(3) = 0 [pid 7234] mkdir("./file0", 0777 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7235] <... ioctl resumed>) = 0 [pid 7234] <... mkdir resumed>) = 0 [pid 4996] close(3) = 0 [pid 7235] close(3) = 0 [pid 7235] mkdir("./file0", 0777) = 0 [pid 7234] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7235] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 191.042118][ T7233] loop1: detected capacity change from 0 to 4096 [ 191.052699][ T7235] loop4: detected capacity change from 0 to 4096 [ 191.061102][ T7234] loop0: detected capacity change from 0 to 4096 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7238 ./strace-static-x86_64: Process 7238 attached [pid 7236] <... write resumed>) = 2097152 [pid 7238] chdir("./186" [pid 7236] munmap(0x7f46b9f9b000, 2097152 [pid 7238] <... chdir resumed>) = 0 [pid 7236] <... munmap resumed>) = 0 [pid 7238] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7237] <... write resumed>) = 2097152 [pid 7236] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7238] <... prctl resumed>) = 0 [pid 7237] munmap(0x7f46b9f9b000, 2097152 [pid 7236] <... openat resumed>) = 4 [ 191.089795][ T7233] NILFS (loop1): invalid segment: Checksum error in segment payload [ 191.113611][ T7234] NILFS (loop0): invalid segment: Checksum error in segment payload [ 191.115455][ T7233] NILFS (loop1): trying rollback from an earlier position [ 191.122162][ T7235] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 7236] ioctl(4, LOOP_SET_FD, 3 [pid 7238] setpgid(0, 0 [pid 7237] <... munmap resumed>) = 0 [pid 7236] <... ioctl resumed>) = 0 [pid 7236] close(3) = 0 [pid 7236] mkdir("./file0", 0777) = 0 [pid 7238] <... setpgid resumed>) = 0 [pid 7237] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7236] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7237] <... openat resumed>) = 4 [pid 7238] <... openat resumed>) = 3 [pid 7237] ioctl(4, LOOP_SET_FD, 3 [pid 7233] <... mount resumed>) = 0 [ 191.138984][ T7236] loop2: detected capacity change from 0 to 4096 [ 191.141739][ T7233] NILFS (loop1): recovery complete [ 191.148460][ T7234] NILFS (loop0): trying rollback from an earlier position [ 191.151922][ T7235] NILFS (loop4): trying rollback from an earlier position [ 191.167589][ T7239] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 191.177943][ T7235] NILFS (loop4): recovery complete [ 191.183845][ T7237] loop5: detected capacity change from 0 to 4096 [pid 7238] write(3, "1000", 4) = 4 [pid 7237] <... ioctl resumed>) = 0 [pid 7233] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7238] close(3) = 0 [pid 7238] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7238] memfd_create("syzkaller", 0) = 3 [pid 7238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7233] <... openat resumed>) = 3 [pid 7237] close(3) = 0 [pid 7233] chdir("./file0" [pid 7237] mkdir("./file0", 0777 [pid 7233] <... chdir resumed>) = 0 [pid 7235] <... mount resumed>) = 0 [pid 7235] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7235] chdir("./file0" [pid 7237] <... mkdir resumed>) = 0 [pid 7237] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7233] ioctl(4, LOOP_CLR_FD [pid 7235] <... chdir resumed>) = 0 [pid 7235] ioctl(4, LOOP_CLR_FD) = 0 [pid 7235] close(4) = 0 [pid 7235] creat("./bus", 000 [pid 7234] <... mount resumed>) = 0 [pid 7234] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7234] chdir("./file0") = 0 [pid 7234] ioctl(4, LOOP_CLR_FD) = 0 [pid 7234] close(4) = 0 [ 191.185770][ T7234] NILFS (loop0): recovery complete [ 191.191502][ T7236] NILFS (loop2): invalid segment: Checksum error in segment payload [ 191.205691][ T7236] NILFS (loop2): trying rollback from an earlier position [ 191.215868][ T7240] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 191.222389][ T7241] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7234] creat("./bus", 000 [pid 7233] <... ioctl resumed>) = 0 [pid 7233] close(4) = 0 [pid 7233] creat("./bus", 000) = 4 [pid 7233] unlink("./bus") = 0 [pid 7238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7233] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7234] <... creat resumed>) = 4 [pid 7233] <... pwritev2 resumed>) = 65007 [pid 7234] unlink("./bus" [pid 7233] exit_group(0) = ? [pid 7234] <... unlink resumed>) = 0 [ 191.241837][ T7237] NILFS (loop5): invalid segment: Checksum error in segment payload [ 191.270827][ T7237] NILFS (loop5): trying rollback from an earlier position [ 191.278752][ T7236] NILFS (loop2): recovery complete [pid 7234] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7236] <... mount resumed>) = 0 [pid 7236] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7236] chdir("./file0" [pid 7234] <... pwritev2 resumed>) = 65007 [pid 7234] exit_group(0) = ? [pid 7238] <... write resumed>) = 2097152 [pid 7236] <... chdir resumed>) = 0 [pid 7235] <... creat resumed>) = 4 [pid 7238] munmap(0x7f46b9f9b000, 2097152 [pid 7236] ioctl(4, LOOP_CLR_FD [pid 7238] <... munmap resumed>) = 0 [pid 7236] <... ioctl resumed>) = 0 [pid 7235] unlink("./bus" [pid 7238] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7236] close(4 [pid 7233] +++ exited with 0 +++ [pid 7238] <... openat resumed>) = 4 [pid 7236] <... close resumed>) = 0 [pid 7235] <... unlink resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7233, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [ 191.295473][ T7242] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 191.323745][ T7237] NILFS (loop5): recovery complete [pid 7238] ioctl(4, LOOP_SET_FD, 3 [pid 7236] creat("./bus", 000 [pid 7235] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7236] <... creat resumed>) = 4 [pid 7236] unlink("./bus" [pid 4994] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7236] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7236] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7234] +++ exited with 0 +++ [pid 4994] <... openat resumed>) = 3 [pid 7235] <... pwritev2 resumed>) = 65007 [pid 4994] fstat(3, [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7234, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7236] <... pwritev2 resumed>) = 65007 [pid 7235] exit_group(0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7236] exit_group(0 [pid 7235] <... exit_group resumed>) = ? [ 191.342482][ T7238] loop3: detected capacity change from 0 to 4096 [pid 4994] getdents64(3, [pid 7236] <... exit_group resumed>) = ? [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./185/binderfs", [pid 4993] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] unlink("./185/binderfs" [pid 4993] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... unlink resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 7238] <... ioctl resumed>) = 0 [pid 4994] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 7238] close(3 [pid 7237] <... mount resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7237] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7237] chdir("./file0") = 0 [pid 7237] ioctl(4, LOOP_CLR_FD) = 0 [pid 7237] close(4) = 0 [pid 4993] getdents64(3, [pid 7237] creat("./bus", 000 [pid 7238] <... close resumed>) = 0 [pid 7236] +++ exited with 0 +++ [pid 7235] +++ exited with 0 +++ [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7238] mkdir("./file0", 0777 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7235, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7238] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7236, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4995] umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] unlink("./186/binderfs" [pid 4997] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7238] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 4993] <... unlink resumed>) = 0 [pid 4997] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] fstat(3, [ 191.400873][ T7243] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7237] <... creat resumed>) = 4 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7237] unlink("./bus") = 0 [pid 7237] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] fstat(3, [pid 4995] getdents64(3, [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] getdents64(3, [pid 4995] umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./182/binderfs", [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] lstat("./186/file0", [pid 4997] lstat("./186/binderfs", [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] unlink("./182/binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] unlink("./186/binderfs" [pid 4995] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... unlink resumed>) = 0 [pid 4995] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 7237] <... pwritev2 resumed>) = 65007 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7237] exit_group(0) = ? [pid 4993] getdents64(4, [pid 4994] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7237] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 4993] close(4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7237, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4998] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] rmdir("./186/file0" [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [ 191.441957][ T7238] NILFS (loop3): invalid segment: Checksum error in segment payload [ 191.462644][ T7238] NILFS (loop3): trying rollback from an earlier position [pid 4993] getdents64(3, [pid 4998] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./186/binderfs" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 4998] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3) = 0 [pid 4993] rmdir("./186" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./185/file0", [pid 4993] <... rmdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] mkdir("./187", 0777 [pid 4994] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... mkdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] <... umount2 resumed>) = 0 [pid 4997] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 4997] lstat("./186/file0", [pid 4994] <... openat resumed>) = 4 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] fstat(4, [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] getdents64(4, [pid 4993] close(3 [pid 4997] <... openat resumed>) = 4 [ 191.522103][ T7238] NILFS (loop3): recovery complete [pid 4997] fstat(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] getdents64(4, [pid 4995] <... umount2 resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(4, [pid 4994] close(4 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7245 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... close resumed>) = 0 [pid 4997] close(4 [pid 4995] lstat("./182/file0", [pid 4994] rmdir("./185/file0" [pid 4997] <... close resumed>) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4997] rmdir("./186/file0" [pid 4995] umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(3, ./strace-static-x86_64: Process 7245 attached [pid 7238] <... mount resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7245] chdir("./187" [pid 7238] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(3, [pid 4995] openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 7245] <... chdir resumed>) = 0 [pid 7238] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] <... openat resumed>) = 4 [pid 7238] chdir("./file0" [pid 4994] <... close resumed>) = 0 [pid 4997] close(3 [pid 7245] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7238] <... chdir resumed>) = 0 [pid 4995] fstat(4, [pid 4994] rmdir("./185" [pid 4997] <... close resumed>) = 0 [pid 7238] ioctl(4, LOOP_CLR_FD [pid 4997] rmdir("./186" [pid 7245] <... prctl resumed>) = 0 [pid 7238] <... ioctl resumed>) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 7245] setpgid(0, 0 [pid 7238] close(4 [pid 4997] mkdir("./187", 0777 [pid 4995] getdents64(4, [pid 4994] mkdir("./186", 0777 [pid 7245] <... setpgid resumed>) = 0 [pid 7238] <... close resumed>) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./186/file0", [pid 4994] <... mkdir resumed>) = 0 [pid 4995] getdents64(4, [pid 7238] creat("./bus", 000 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4998] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... openat resumed>) = 3 [pid 4995] close(4 [pid 7245] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4995] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 7245] write(3, "1000", 4 [pid 4998] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7245] <... write resumed>) = 4 [pid 4997] close(3 [pid 4995] rmdir("./182/file0" [pid 4994] ioctl(3, LOOP_CLR_FD [pid 7245] close(3 [pid 4997] <... close resumed>) = 0 [pid 4998] <... openat resumed>) = 4 [pid 4995] <... rmdir resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7245] <... close resumed>) = 0 [pid 4998] fstat(4, [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] getdents64(3, [pid 4994] close(3 [pid 7245] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7246 [pid 4995] close(3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7245] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./186/file0" [pid 4995] rmdir("./182" [pid 7245] memfd_create("syzkaller", 0 [pid 4998] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 7246 attached [pid 4998] getdents64(3, [pid 4995] <... rmdir resumed>) = 0 [pid 7246] chdir("./187" [pid 7245] <... memfd_create resumed>) = 3 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] mkdir("./183", 0777 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7247 [pid 7246] <... chdir resumed>) = 0 [pid 7245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] close(3 [pid 7246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... close resumed>) = 0 [pid 7246] <... prctl resumed>) = 0 [pid 4998] rmdir("./186" [pid 4995] <... mkdir resumed>) = 0 [pid 7246] setpgid(0, 0 [pid 7245] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... rmdir resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 7247 attached [pid 7246] <... setpgid resumed>) = 0 [pid 4998] mkdir("./187", 0777 [pid 7246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... mkdir resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 7246] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4995] ioctl(3, LOOP_CLR_FD [pid 7246] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 3 [pid 7246] <... write resumed>) = 4 [pid 7247] chdir("./186" [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7246] close(3 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3 [pid 7247] <... chdir resumed>) = 0 [pid 7246] <... close resumed>) = 0 [pid 4998] close(3 [pid 4995] <... close resumed>) = 0 [pid 7247] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7246] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... close resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7247] <... prctl resumed>) = 0 [pid 7246] <... symlink resumed>) = 0 [pid 7238] <... creat resumed>) = 4 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7247] setpgid(0, 0 [pid 7246] memfd_create("syzkaller", 0 [pid 7238] unlink("./bus" [pid 7247] <... setpgid resumed>) = 0 [pid 7246] <... memfd_create resumed>) = 3 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7249 [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7248 [pid 7247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7238] <... unlink resumed>) = 0 [ 191.568824][ T7244] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7247] <... openat resumed>) = 3 [pid 7246] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7238] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7247] write(3, "1000", 4 [pid 7245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152./strace-static-x86_64: Process 7248 attached [pid 7247] <... write resumed>) = 4 [pid 7247] close(3) = 0 ./strace-static-x86_64: Process 7249 attached [pid 7248] chdir("./183" [pid 7247] symlink("/dev/binderfs", "./binderfs" [pid 7249] chdir("./187") = 0 [pid 7248] <... chdir resumed>) = 0 [pid 7247] <... symlink resumed>) = 0 [pid 7249] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7247] memfd_create("syzkaller", 0 [pid 7249] <... prctl resumed>) = 0 [pid 7248] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7247] <... memfd_create resumed>) = 3 [pid 7249] setpgid(0, 0 [pid 7248] <... prctl resumed>) = 0 [pid 7247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7249] <... setpgid resumed>) = 0 [pid 7248] setpgid(0, 0 [pid 7238] <... pwritev2 resumed>) = 65007 [pid 7249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7248] <... setpgid resumed>) = 0 [pid 7247] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7238] exit_group(0 [pid 7249] <... openat resumed>) = 3 [pid 7238] <... exit_group resumed>) = ? [pid 7249] write(3, "1000", 4) = 4 [pid 7249] close(3 [pid 7248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7249] <... close resumed>) = 0 [pid 7249] symlink("/dev/binderfs", "./binderfs" [pid 7248] <... openat resumed>) = 3 [pid 7249] <... symlink resumed>) = 0 [pid 7248] write(3, "1000", 4 [pid 7249] memfd_create("syzkaller", 0 [pid 7248] <... write resumed>) = 4 [pid 7249] <... memfd_create resumed>) = 3 [pid 7248] close(3 [pid 7246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7248] <... close resumed>) = 0 [pid 7249] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7248] symlink("/dev/binderfs", "./binderfs" [pid 7238] +++ exited with 0 +++ [pid 7248] <... symlink resumed>) = 0 [pid 7248] memfd_create("syzkaller", 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7238, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 7248] <... memfd_create resumed>) = 3 [pid 4996] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7248] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./186/binderfs") = 0 [pid 7247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7249] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7245] <... write resumed>) = 2097152 [pid 7245] munmap(0x7f46b9f9b000, 2097152 [pid 7247] <... write resumed>) = 2097152 [pid 7246] <... write resumed>) = 2097152 [pid 7245] <... munmap resumed>) = 0 [pid 7245] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] <... umount2 resumed>) = 0 [pid 7245] <... openat resumed>) = 4 [pid 7247] munmap(0x7f46b9f9b000, 2097152 [pid 7245] ioctl(4, LOOP_SET_FD, 3 [pid 7246] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7246] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7246] ioctl(4, LOOP_SET_FD, 3 [pid 7247] <... munmap resumed>) = 0 [pid 7245] <... ioctl resumed>) = 0 [pid 4996] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./186/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7247] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7245] close(3 [pid 7247] <... openat resumed>) = 4 [pid 7247] ioctl(4, LOOP_SET_FD, 3 [pid 7245] <... close resumed>) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./186/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./186" [pid 7247] <... ioctl resumed>) = 0 [pid 7245] mkdir("./file0", 0777 [pid 7248] <... write resumed>) = 2097152 [pid 7247] close(3 [pid 4996] <... rmdir resumed>) = 0 [pid 7247] <... close resumed>) = 0 [pid 7245] <... mkdir resumed>) = 0 [pid 4996] mkdir("./187", 0777 [pid 7247] mkdir("./file0", 0777 [pid 7245] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7249] <... write resumed>) = 2097152 [pid 7248] munmap(0x7f46b9f9b000, 2097152 [pid 7247] <... mkdir resumed>) = 0 [pid 7246] <... ioctl resumed>) = 0 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7249] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... openat resumed>) = 3 [pid 7248] <... munmap resumed>) = 0 [pid 7247] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7248] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7248] <... openat resumed>) = 4 [pid 7249] <... munmap resumed>) = 0 [ 191.763895][ T7245] loop0: detected capacity change from 0 to 4096 [ 191.768116][ T7246] loop4: detected capacity change from 0 to 4096 [ 191.786131][ T7247] loop1: detected capacity change from 0 to 4096 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7249] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] close(3 [pid 7249] <... openat resumed>) = 4 [pid 4996] <... close resumed>) = 0 [pid 7249] ioctl(4, LOOP_SET_FD, 3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7248] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7250 [pid 7246] close(3) = 0 [pid 7246] mkdir("./file0", 0777) = 0 [pid 7246] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 7250 attached [pid 7250] chdir("./187" [pid 7248] <... ioctl resumed>) = 0 [pid 7250] <... chdir resumed>) = 0 [pid 7250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7250] setpgid(0, 0) = 0 [pid 7250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7250] write(3, "1000", 4) = 4 [pid 7250] close(3 [pid 7248] close(3 [pid 7250] <... close resumed>) = 0 [pid 7250] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7250] memfd_create("syzkaller", 0) = 3 [ 191.819467][ T7247] NILFS (loop1): invalid segment: Checksum error in segment payload [ 191.823381][ T7249] loop5: detected capacity change from 0 to 4096 [ 191.831342][ T7245] NILFS (loop0): invalid segment: Checksum error in segment payload [ 191.843017][ T7248] loop2: detected capacity change from 0 to 4096 [ 191.856176][ T7245] NILFS (loop0): trying rollback from an earlier position [pid 7250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7248] <... close resumed>) = 0 [pid 7248] mkdir("./file0", 0777) = 0 [pid 7248] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7249] <... ioctl resumed>) = 0 [ 191.865409][ T7247] NILFS (loop1): trying rollback from an earlier position [ 191.883296][ T7247] NILFS (loop1): recovery complete [ 191.893779][ T7246] NILFS (loop4): invalid segment: Checksum error in segment payload [ 191.902492][ T7248] NILFS (loop2): invalid segment: Checksum error in segment payload [ 191.904020][ T7245] NILFS (loop0): recovery complete [pid 7249] close(3 [pid 7250] <... write resumed>) = 2097152 [pid 7249] <... close resumed>) = 0 [pid 7247] <... mount resumed>) = 0 [pid 7249] mkdir("./file0", 0777 [pid 7247] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7249] <... mkdir resumed>) = 0 [pid 7249] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7247] <... openat resumed>) = 3 [pid 7247] chdir("./file0") = 0 [pid 7247] ioctl(4, LOOP_CLR_FD) = 0 [pid 7247] close(4) = 0 [ 191.911178][ T7248] NILFS (loop2): trying rollback from an earlier position [ 191.918241][ T7246] NILFS (loop4): trying rollback from an earlier position [ 191.934938][ T7251] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 191.955017][ T7252] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7247] creat("./bus", 000 [pid 7250] munmap(0x7f46b9f9b000, 2097152 [pid 7245] <... mount resumed>) = 0 [pid 7245] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7245] chdir("./file0") = 0 [pid 7245] ioctl(4, LOOP_CLR_FD) = 0 [pid 7245] close(4) = 0 [pid 7245] creat("./bus", 000 [pid 7247] <... creat resumed>) = 4 [pid 7247] unlink("./bus") = 0 [pid 7247] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7245] <... creat resumed>) = 4 [pid 7245] unlink("./bus") = 0 [ 191.962996][ T7249] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 7245] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7250] <... munmap resumed>) = 0 [pid 7247] <... pwritev2 resumed>) = 65007 [pid 7248] <... mount resumed>) = 0 [pid 7247] exit_group(0 [pid 7250] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7250] ioctl(4, LOOP_SET_FD, 3 [pid 7248] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7247] <... exit_group resumed>) = ? [pid 7248] <... openat resumed>) = 3 [ 192.001235][ T7249] NILFS (loop5): trying rollback from an earlier position [ 192.013834][ T7246] NILFS (loop4): recovery complete [ 192.013853][ T7248] NILFS (loop2): recovery complete [ 192.020948][ T7253] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 192.031220][ T7250] loop3: detected capacity change from 0 to 4096 [pid 7248] chdir("./file0") = 0 [pid 7247] +++ exited with 0 +++ [pid 7248] ioctl(4, LOOP_CLR_FD [pid 7250] <... ioctl resumed>) = 0 [pid 7250] close(3) = 0 [pid 7250] mkdir("./file0", 0777) = 0 [pid 7250] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7248] <... ioctl resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7247, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 7248] close(4 [pid 7245] <... pwritev2 resumed>) = 65007 [pid 4994] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7245] exit_group(0 [pid 7248] <... close resumed>) = 0 [pid 7245] <... exit_group resumed>) = ? [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7248] creat("./bus", 000 [pid 4994] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 192.050711][ T7249] NILFS (loop5): recovery complete [pid 7248] <... creat resumed>) = 4 [pid 4994] unlink("./186/binderfs" [pid 7248] unlink("./bus" [pid 4994] <... unlink resumed>) = 0 [pid 4994] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7248] <... unlink resumed>) = 0 [pid 7248] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7246] <... mount resumed>) = 0 [pid 7246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7246] chdir("./file0") = 0 [pid 7245] +++ exited with 0 +++ [pid 7246] ioctl(4, LOOP_CLR_FD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7245, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7246] <... ioctl resumed>) = 0 [ 192.081839][ T7250] NILFS (loop3): invalid segment: Checksum error in segment payload [ 192.091975][ T7250] NILFS (loop3): trying rollback from an earlier position [ 192.110504][ T7254] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7246] close(4 [pid 4993] <... restart_syscall resumed>) = 0 [pid 7249] <... mount resumed>) = 0 [pid 7246] <... close resumed>) = 0 [pid 7249] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7248] <... pwritev2 resumed>) = 65007 [pid 7246] creat("./bus", 000 [pid 7249] <... openat resumed>) = 3 [pid 7248] exit_group(0 [pid 4993] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7249] chdir("./file0" [pid 7248] <... exit_group resumed>) = ? [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7249] <... chdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7249] ioctl(4, LOOP_CLR_FD [pid 4993] <... openat resumed>) = 3 [pid 7249] <... ioctl resumed>) = 0 [pid 4993] fstat(3, [pid 7249] close(4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7249] <... close resumed>) = 0 [pid 4993] getdents64(3, [pid 7249] creat("./bus", 000 [pid 4994] <... umount2 resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./187/binderfs" [pid 4994] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] lstat("./186/file0", [pid 7248] +++ exited with 0 +++ [ 192.126635][ T7255] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7248, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4995] umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7246] <... creat resumed>) = 4 [pid 4995] <... openat resumed>) = 3 [pid 7246] unlink("./bus") = 0 [pid 4995] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 7246] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7249] <... creat resumed>) = 4 [pid 4995] umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7249] unlink("./bus" [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] lstat("./183/binderfs", [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7249] <... unlink resumed>) = 0 [pid 4995] unlink("./183/binderfs" [pid 7249] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... unlink resumed>) = 0 [pid 4995] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... openat resumed>) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7249] <... pwritev2 resumed>) = 65007 [pid 7249] exit_group(0 [pid 4994] getdents64(4, [pid 7249] <... exit_group resumed>) = ? [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 7246] <... pwritev2 resumed>) = 65007 [pid 7246] exit_group(0 [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./186/file0" [pid 7246] <... exit_group resumed>) = ? [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./186") = 0 [pid 4994] mkdir("./187", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7256 ./strace-static-x86_64: Process 7256 attached [pid 7249] +++ exited with 0 +++ [pid 4993] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7256] chdir("./187" [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7256] <... chdir resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7249, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [ 192.235089][ T7250] NILFS (loop3): recovery complete [pid 4993] lstat("./187/file0", [pid 7246] +++ exited with 0 +++ [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 7256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7246, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 4998] <... restart_syscall resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7256] <... prctl resumed>) = 0 [pid 7250] <... mount resumed>) = 0 [pid 4993] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7256] setpgid(0, 0 [pid 7250] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7256] <... setpgid resumed>) = 0 [pid 7250] <... openat resumed>) = 3 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7250] chdir("./file0" [pid 4998] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7256] <... openat resumed>) = 3 [pid 7250] <... chdir resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... openat resumed>) = 4 [pid 7256] write(3, "1000", 4 [pid 7250] ioctl(4, LOOP_CLR_FD [pid 4998] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] lstat("./183/file0", [pid 4993] fstat(4, [pid 7256] <... write resumed>) = 4 [pid 7250] <... ioctl resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7256] close(3 [pid 7250] close(4 [pid 4998] fstat(3, [pid 4997] fstat(3, [pid 4995] umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 7256] <... close resumed>) = 0 [pid 7250] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7256] symlink("/dev/binderfs", "./binderfs" [pid 7250] creat("./bus", 000 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4995] openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(4, [pid 7256] <... symlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... openat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7256] memfd_create("syzkaller", 0 [pid 4998] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] fstat(4, [pid 4993] close(4 [pid 7256] <... memfd_create resumed>) = 3 [pid 7250] <... creat resumed>) = 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 7256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7250] unlink("./bus" [pid 4998] lstat("./187/binderfs", [pid 4997] lstat("./187/binderfs", [pid 4995] getdents64(4, [pid 4993] rmdir("./187/file0" [pid 7256] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... rmdir resumed>) = 0 [pid 7250] <... unlink resumed>) = 0 [pid 4998] unlink("./187/binderfs" [pid 4997] unlink("./187/binderfs" [pid 4995] getdents64(4, [pid 4993] getdents64(3, [pid 7250] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [ 192.261250][ T7257] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(4 [pid 4993] close(3 [pid 4995] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4995] rmdir("./183/file0" [pid 4993] rmdir("./187" [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] mkdir("./188", 0777 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... mkdir resumed>) = 0 [pid 4995] close(3 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4995] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4995] rmdir("./183" [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4995] <... rmdir resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] mkdir("./184", 0777 [pid 4993] close(3 [pid 4995] <... mkdir resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4995] <... openat resumed>) = 3 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7258 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4995] close(3) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7259 ./strace-static-x86_64: Process 7258 attached [pid 7258] chdir("./188" [pid 7256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7258] <... chdir resumed>) = 0 [pid 7258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7258] setpgid(0, 0) = 0 [pid 7258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7258] write(3, "1000", 4) = 4 [pid 7258] close(3) = 0 [pid 7258] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7258] memfd_create("syzkaller", 0./strace-static-x86_64: Process 7259 attached ) = 3 [pid 7258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7250] <... pwritev2 resumed>) = 65007 [pid 7258] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7259] chdir("./184" [pid 7250] exit_group(0 [pid 4998] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7259] <... chdir resumed>) = 0 [pid 7250] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7259] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./187/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 7259] <... prctl resumed>) = 0 [pid 4998] lstat("./187/file0", [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./187/file0" [pid 7259] setpgid(0, 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 7259] <... setpgid resumed>) = 0 [pid 7258] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7250] +++ exited with 0 +++ [pid 4998] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7250, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] rmdir("./187" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] mkdir("./188", 0777 [pid 4996] <... openat resumed>) = 3 [pid 7259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7256] <... write resumed>) = 2097152 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... mkdir resumed>) = 0 [pid 4996] fstat(3, [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4996] lstat("./187/binderfs", [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./187/binderfs" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7260 [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7259] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7260 attached [pid 7259] write(3, "1000", 4 [pid 4998] <... openat resumed>) = 4 [pid 4998] fstat(4, [pid 7259] <... write resumed>) = 4 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7259] close(3 [pid 4998] getdents64(4, [pid 7260] chdir("./188" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7259] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 7260] <... chdir resumed>) = 0 [pid 7259] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7259] <... symlink resumed>) = 0 [pid 4998] close(4 [pid 7260] setpgid(0, 0 [pid 4998] <... close resumed>) = 0 [pid 7260] <... setpgid resumed>) = 0 [pid 7259] memfd_create("syzkaller", 0 [pid 4998] rmdir("./187/file0" [pid 7260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7260] write(3, "1000", 4) = 4 [pid 7259] <... memfd_create resumed>) = 3 [pid 7258] <... write resumed>) = 2097152 [pid 7256] munmap(0x7f46b9f9b000, 2097152 [pid 4998] <... rmdir resumed>) = 0 [pid 7260] close(3 [pid 7259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] getdents64(3, [pid 7260] <... close resumed>) = 0 [pid 7256] <... munmap resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7260] symlink("/dev/binderfs", "./binderfs" [pid 7259] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] close(3 [pid 7260] <... symlink resumed>) = 0 [pid 7256] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7260] memfd_create("syzkaller", 0 [pid 7256] <... openat resumed>) = 4 [pid 7260] <... memfd_create resumed>) = 3 [pid 7256] ioctl(4, LOOP_SET_FD, 3 [pid 7260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... close resumed>) = 0 [pid 7260] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] rmdir("./187") = 0 [pid 4998] mkdir("./188", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7261 [pid 7256] <... ioctl resumed>) = 0 [pid 7256] close(3) = 0 [pid 7256] mkdir("./file0", 0777 [pid 7260] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7256] <... mkdir resumed>) = 0 [pid 7256] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 7261 attached [pid 7261] chdir("./188") = 0 [pid 7261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7261] setpgid(0, 0) = 0 [pid 7261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = 0 [pid 7261] <... openat resumed>) = 3 [pid 4996] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7261] write(3, "1000", 4) = 4 [pid 7261] close(3) = 0 [pid 7261] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7261] memfd_create("syzkaller", 0 [ 192.438665][ T7256] loop1: detected capacity change from 0 to 4096 [pid 4996] lstat("./187/file0", [pid 7261] <... memfd_create resumed>) = 3 [pid 7259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7258] munmap(0x7f46b9f9b000, 2097152 [pid 4996] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7258] <... munmap resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7258] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... openat resumed>) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./187/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./187") = 0 [pid 4996] mkdir("./188", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7258] <... ioctl resumed>) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7262 [pid 7258] close(3) = 0 [pid 7258] mkdir("./file0", 0777 [pid 7260] <... write resumed>) = 2097152 [pid 7258] <... mkdir resumed>) = 0 [pid 7258] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 7262 attached [pid 7262] chdir("./188") = 0 [pid 7262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7262] setpgid(0, 0 [pid 7261] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7262] <... setpgid resumed>) = 0 [pid 7262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7259] <... write resumed>) = 2097152 [ 192.495454][ T7256] NILFS (loop1): invalid segment: Checksum error in segment payload [ 192.503498][ T7256] NILFS (loop1): trying rollback from an earlier position [ 192.527745][ T7258] loop0: detected capacity change from 0 to 4096 [pid 7262] <... openat resumed>) = 3 [pid 7262] write(3, "1000", 4) = 4 [pid 7262] close(3) = 0 [pid 7259] munmap(0x7f46b9f9b000, 2097152 [pid 7262] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7262] memfd_create("syzkaller", 0 [pid 7260] munmap(0x7f46b9f9b000, 2097152 [pid 7259] <... munmap resumed>) = 0 [pid 7262] <... memfd_create resumed>) = 3 [pid 7260] <... munmap resumed>) = 0 [pid 7259] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7260] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7259] <... openat resumed>) = 4 [pid 7262] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7260] <... openat resumed>) = 4 [pid 7259] ioctl(4, LOOP_SET_FD, 3 [pid 7260] ioctl(4, LOOP_SET_FD, 3 [pid 7259] <... ioctl resumed>) = 0 [pid 7259] close(3) = 0 [pid 7259] mkdir("./file0", 0777 [pid 7262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7260] <... ioctl resumed>) = 0 [pid 7259] <... mkdir resumed>) = 0 [ 192.582774][ T7258] NILFS (loop0): invalid segment: Checksum error in segment payload [ 192.597641][ T7259] loop2: detected capacity change from 0 to 4096 [ 192.597694][ T7260] loop4: detected capacity change from 0 to 4096 [ 192.615049][ T7256] NILFS (loop1): recovery complete [ 192.619071][ T7258] NILFS (loop0): trying rollback from an earlier position [pid 7259] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7256] <... mount resumed>) = 0 [pid 7256] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7256] chdir("./file0") = 0 [pid 7256] ioctl(4, LOOP_CLR_FD) = 0 [pid 7256] close(4) = 0 [pid 7256] creat("./bus", 000 [pid 7260] close(3) = 0 [pid 7260] mkdir("./file0", 0777) = 0 [pid 7260] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7261] <... write resumed>) = 2097152 [ 192.635124][ T7263] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 192.650158][ T7259] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 7261] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7261] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7261] ioctl(4, LOOP_SET_FD, 3 [pid 7256] <... creat resumed>) = 4 [pid 7256] unlink("./bus") = 0 [pid 7256] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7262] <... write resumed>) = 2097152 [pid 7262] munmap(0x7f46b9f9b000, 2097152 [pid 7261] <... ioctl resumed>) = 0 [pid 7262] <... munmap resumed>) = 0 [pid 7261] close(3 [pid 7262] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7256] <... pwritev2 resumed>) = 65007 [pid 7261] <... close resumed>) = 0 [pid 7262] <... openat resumed>) = 4 [pid 7261] mkdir("./file0", 0777 [ 192.677428][ T7260] NILFS (loop4): invalid segment: Checksum error in segment payload [ 192.689804][ T7261] loop5: detected capacity change from 0 to 4096 [ 192.699918][ T7259] NILFS (loop2): trying rollback from an earlier position [ 192.703084][ T7258] NILFS (loop0): recovery complete [ 192.708591][ T7260] NILFS (loop4): trying rollback from an earlier position [pid 7256] exit_group(0 [pid 7262] ioctl(4, LOOP_SET_FD, 3 [pid 7256] <... exit_group resumed>) = ? [pid 7261] <... mkdir resumed>) = 0 [pid 7261] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7256] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7256, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./187/binderfs") = 0 [pid 4994] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7262] <... ioctl resumed>) = 0 [pid 7258] <... mount resumed>) = 0 [pid 7258] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7258] chdir("./file0") = 0 [pid 7258] ioctl(4, LOOP_CLR_FD) = 0 [ 192.727221][ T7262] loop3: detected capacity change from 0 to 4096 [ 192.740295][ T7261] NILFS (loop5): invalid segment: Checksum error in segment payload [ 192.744210][ T7264] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 192.753227][ T7261] NILFS (loop5): trying rollback from an earlier position [ 192.772755][ T7259] NILFS (loop2): recovery complete [pid 7258] close(4 [pid 7262] close(3 [pid 7258] <... close resumed>) = 0 [pid 7258] creat("./bus", 000 [pid 7262] <... close resumed>) = 0 [pid 7262] mkdir("./file0", 0777) = 0 [pid 7262] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7259] <... mount resumed>) = 0 [ 192.778286][ T7260] NILFS (loop4): recovery complete [ 192.796836][ T7262] NILFS (loop3): invalid segment: Checksum error in segment payload [ 192.810937][ T7266] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7259] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7260] <... mount resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./187/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 7260] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7259] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./187/file0" [pid 7259] chdir("./file0" [pid 7260] <... openat resumed>) = 3 [pid 7260] chdir("./file0" [pid 7259] <... chdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./187" [pid 7259] ioctl(4, LOOP_CLR_FD [pid 7260] <... chdir resumed>) = 0 [pid 7259] <... ioctl resumed>) = 0 [pid 7260] ioctl(4, LOOP_CLR_FD [pid 7259] close(4 [pid 4994] <... rmdir resumed>) = 0 [pid 7260] <... ioctl resumed>) = 0 [pid 4994] mkdir("./188", 0777 [pid 7260] close(4 [pid 7259] <... close resumed>) = 0 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7267 [pid 7260] <... close resumed>) = 0 [pid 7259] creat("./bus", 000 [pid 7260] creat("./bus", 000 [pid 7258] <... creat resumed>) = 4 [pid 7258] unlink("./bus"./strace-static-x86_64: Process 7267 attached [pid 7267] chdir("./188") = 0 [pid 7267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7267] setpgid(0, 0) = 0 [pid 7267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7267] write(3, "1000", 4) = 4 [pid 7267] close(3) = 0 [pid 7267] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7267] memfd_create("syzkaller", 0 [pid 7260] <... creat resumed>) = 4 [pid 7258] <... unlink resumed>) = 0 [pid 7267] <... memfd_create resumed>) = 3 [pid 7261] <... mount resumed>) = 0 [pid 7258] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 192.817610][ T7265] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 192.846428][ T7262] NILFS (loop3): trying rollback from an earlier position [ 192.854860][ T7261] NILFS (loop5): recovery complete [ 192.865187][ T7268] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7261] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7260] unlink("./bus" [pid 7267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7261] <... openat resumed>) = 3 [pid 7259] <... creat resumed>) = 4 [pid 7267] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7261] chdir("./file0" [pid 7260] <... unlink resumed>) = 0 [pid 7259] unlink("./bus" [pid 7258] <... pwritev2 resumed>) = 65007 [pid 7261] <... chdir resumed>) = 0 [pid 7260] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7259] <... unlink resumed>) = 0 [pid 7261] ioctl(4, LOOP_CLR_FD [pid 7259] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 192.900519][ T7262] NILFS (loop3): recovery complete [pid 7258] exit_group(0 [pid 7261] <... ioctl resumed>) = 0 [pid 7261] close(4) = 0 [pid 7261] creat("./bus", 000 [pid 7267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7258] <... exit_group resumed>) = ? [pid 7260] <... pwritev2 resumed>) = 65007 [pid 7260] exit_group(0) = ? [pid 7259] <... pwritev2 resumed>) = 65007 [pid 7262] <... mount resumed>) = 0 [pid 7259] exit_group(0 [pid 7258] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7258, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7262] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7261] <... creat resumed>) = 4 [pid 7259] <... exit_group resumed>) = ? [pid 7262] <... openat resumed>) = 3 [pid 7261] unlink("./bus" [pid 4993] umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7262] chdir("./file0" [pid 7261] <... unlink resumed>) = 0 [pid 7262] <... chdir resumed>) = 0 [pid 7261] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7267] <... write resumed>) = 2097152 [pid 7262] ioctl(4, LOOP_CLR_FD [pid 7259] +++ exited with 0 +++ [pid 4993] openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7267] munmap(0x7f46b9f9b000, 2097152 [pid 7262] <... ioctl resumed>) = 0 [pid 7260] +++ exited with 0 +++ [pid 4993] <... openat resumed>) = 3 [pid 7262] close(4 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7260, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7259, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 4993] fstat(3, [pid 7267] <... munmap resumed>) = 0 [pid 7262] <... close resumed>) = 0 [pid 7262] creat("./bus", 000 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7262] <... creat resumed>) = 4 [ 192.932851][ T7269] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] <... restart_syscall resumed>) = 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] getdents64(3, [pid 7262] unlink("./bus" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7262] <... unlink resumed>) = 0 [pid 4993] umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7262] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7267] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4997] openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./188/binderfs", [pid 7267] <... openat resumed>) = 4 [pid 7262] <... pwritev2 resumed>) = 65007 [pid 7261] <... pwritev2 resumed>) = 65007 [pid 4997] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7267] ioctl(4, LOOP_SET_FD, 3 [pid 7262] exit_group(0 [pid 7261] exit_group(0 [pid 4997] fstat(3, [pid 4995] <... openat resumed>) = 3 [pid 4993] unlink("./188/binderfs" [pid 7262] <... exit_group resumed>) = ? [pid 7267] <... ioctl resumed>) = 0 [pid 7261] <... exit_group resumed>) = ? [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] fstat(3, [pid 4993] <... unlink resumed>) = 0 [pid 7267] close(3 [pid 4997] getdents64(3, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7267] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] getdents64(3, [pid 7267] mkdir("./file0", 0777 [pid 4997] umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7267] <... mkdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7267] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4997] lstat("./188/binderfs", [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] lstat("./184/binderfs", [pid 4997] unlink("./188/binderfs" [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4995] unlink("./184/binderfs" [pid 4997] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... unlink resumed>) = 0 [pid 4995] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7261] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7261, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 4998] umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 7262] +++ exited with 0 +++ [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7262, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4998] umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./188/binderfs", [pid 4996] <... restart_syscall resumed>) = 0 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./188/binderfs" [pid 4996] umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... unlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] getdents64(3, [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] lstat("./188/file0", [pid 4996] umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./188/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 193.024728][ T7267] loop1: detected capacity change from 0 to 4096 [ 193.049173][ T7267] NILFS (loop1): invalid segment: Checksum error in segment payload [ 193.058390][ T7267] NILFS (loop1): trying rollback from an earlier position [pid 4996] unlink("./188/binderfs" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... unlink resumed>) = 0 [pid 4993] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./188/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./188") = 0 [pid 4993] mkdir("./189", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./188/file0", [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./184/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7270 [pid 4997] fstat(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, [pid 4996] <... umount2 resumed>) = 0 [pid 4995] <... openat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] fstat(4, [pid 4997] getdents64(4, [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4995] getdents64(4, [pid 4997] close(4 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... close resumed>) = 0 [pid 4995] getdents64(4, [pid 4997] rmdir("./188/file0" [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] close(4 [pid 4997] getdents64(3, [pid 4995] <... close resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] rmdir("./184/file0" [pid 4997] close(3 [pid 4995] <... rmdir resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4995] getdents64(3, [pid 4997] rmdir("./188" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... rmdir resumed>) = 0 [pid 4995] close(3 [pid 4997] mkdir("./189", 0777 [pid 4995] <... close resumed>) = 0 ./strace-static-x86_64: Process 7270 attached [pid 4997] <... mkdir resumed>) = 0 [pid 4996] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] rmdir("./184" [pid 7270] chdir("./189" [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... rmdir resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4996] lstat("./188/file0", [pid 4995] mkdir("./185", 0777 [pid 7270] <... chdir resumed>) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 7270] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4998] <... umount2 resumed>) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7270] <... prctl resumed>) = 0 [pid 4998] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... openat resumed>) = 3 [pid 7270] setpgid(0, 0 [pid 4997] <... close resumed>) = 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7270] <... setpgid resumed>) = 0 [pid 4998] lstat("./188/file0", [pid 7270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7270] <... openat resumed>) = 3 [pid 4998] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7270] write(3, "1000", 4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7270] <... write resumed>) = 4 [pid 4998] openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7270] close(3 [pid 4998] <... openat resumed>) = 4 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... openat resumed>) = 4 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7270] <... close resumed>) = 0 [pid 4998] fstat(4, ./strace-static-x86_64: Process 7272 attached [pid 7270] symlink("/dev/binderfs", "./binderfs" [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(4, [pid 4995] close(3 [pid 7270] <... symlink resumed>) = 0 [pid 4998] getdents64(4, [pid 7270] memfd_create("syzkaller", 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7270] <... memfd_create resumed>) = 3 [pid 4998] getdents64(4, [pid 7270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7270] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] close(4 [pid 7272] chdir("./189" [pid 7267] <... mount resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7272 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... close resumed>) = 0 [pid 4998] rmdir("./188/file0" [pid 7272] <... chdir resumed>) = 0 [pid 7270] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7267] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... rmdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./188") = 0 [pid 4998] mkdir("./189", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7272] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7267] <... openat resumed>) = 3 [pid 4998] close(3 [pid 7272] <... prctl resumed>) = 0 [pid 7267] chdir("./file0" [pid 4998] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7272] setpgid(0, 0 [pid 7267] <... chdir resumed>) = 0 [pid 4996] getdents64(4, [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7273 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7274 [pid 7272] <... setpgid resumed>) = 0 [pid 7267] ioctl(4, LOOP_CLR_FD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 7273 attached [pid 7272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] close(4 [pid 7267] <... ioctl resumed>) = 0 [pid 7273] chdir("./185" [pid 7272] <... openat resumed>) = 3 [pid 7267] close(4 [pid 4996] <... close resumed>) = 0 [pid 7273] <... chdir resumed>) = 0 [pid 7272] write(3, "1000", 4 [pid 7267] <... close resumed>) = 0 [pid 4996] rmdir("./188/file0" [pid 7273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 7274 attached [pid 7273] setpgid(0, 0 [pid 7272] <... write resumed>) = 4 [pid 7267] creat("./bus", 000 [pid 7274] chdir("./189" [pid 7273] <... setpgid resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7274] <... chdir resumed>) = 0 [pid 7273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7272] close(3 [pid 4996] getdents64(3, [pid 7274] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7273] <... openat resumed>) = 3 [pid 7267] <... creat resumed>) = 4 [pid 7272] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7274] <... prctl resumed>) = 0 [pid 7273] write(3, "1000", 4 [pid 7272] symlink("/dev/binderfs", "./binderfs" [pid 7267] unlink("./bus" [pid 4996] close(3 [pid 7274] setpgid(0, 0 [pid 7273] <... write resumed>) = 4 [pid 7272] <... symlink resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7274] <... setpgid resumed>) = 0 [pid 7273] close(3 [pid 7274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7273] <... close resumed>) = 0 [pid 7272] memfd_create("syzkaller", 0 [pid 7267] <... unlink resumed>) = 0 [pid 4996] rmdir("./188" [pid 7274] <... openat resumed>) = 3 [pid 7273] symlink("/dev/binderfs", "./binderfs" [pid 7272] <... memfd_create resumed>) = 3 [pid 7267] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7274] write(3, "1000", 4 [pid 7273] <... symlink resumed>) = 0 [pid 7272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7274] <... write resumed>) = 4 [pid 7273] memfd_create("syzkaller", 0 [pid 7274] close(3 [pid 7273] <... memfd_create resumed>) = 3 [ 193.176512][ T7267] NILFS (loop1): recovery complete [ 193.193358][ T7271] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7274] <... close resumed>) = 0 [pid 7273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7272] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] mkdir("./189", 0777 [pid 7274] symlink("/dev/binderfs", "./binderfs" [pid 7273] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7274] <... symlink resumed>) = 0 [pid 7274] memfd_create("syzkaller", 0) = 3 [pid 7274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] <... mkdir resumed>) = 0 [pid 7267] <... pwritev2 resumed>) = 65007 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7267] exit_group(0) = ? [pid 7270] <... write resumed>) = 2097152 [pid 4996] <... openat resumed>) = 3 [pid 7270] munmap(0x7f46b9f9b000, 2097152 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 7270] <... munmap resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7275 [pid 7267] +++ exited with 0 +++ ./strace-static-x86_64: Process 7275 attached [pid 7275] chdir("./189" [pid 7270] ioctl(4, LOOP_SET_FD, 3 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7267, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 7275] <... chdir resumed>) = 0 [pid 7275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7275] setpgid(0, 0) = 0 [pid 7275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7270] <... ioctl resumed>) = 0 [pid 7275] <... openat resumed>) = 3 [pid 7275] write(3, "1000", 4 [pid 7270] close(3 [pid 7275] <... write resumed>) = 4 [pid 7273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7270] <... close resumed>) = 0 [pid 7275] close(3) = 0 [pid 7270] mkdir("./file0", 0777 [pid 7275] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4994] umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7275] memfd_create("syzkaller", 0 [pid 7270] <... mkdir resumed>) = 0 [pid 7275] <... memfd_create resumed>) = 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7270] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7275] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7275] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7272] <... write resumed>) = 2097152 [pid 4994] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 7274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [ 193.307048][ T7270] loop0: detected capacity change from 0 to 4096 [pid 4994] umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./188/binderfs", [pid 7272] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./188/binderfs") = 0 [pid 4994] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7272] <... munmap resumed>) = 0 [pid 7272] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7272] ioctl(4, LOOP_SET_FD, 3 [pid 7273] <... write resumed>) = 2097152 [pid 7273] munmap(0x7f46b9f9b000, 2097152 [pid 7274] <... write resumed>) = 2097152 [pid 7273] <... munmap resumed>) = 0 [pid 7273] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7272] <... ioctl resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7274] munmap(0x7f46b9f9b000, 2097152 [pid 7273] <... openat resumed>) = 4 [ 193.349504][ T7270] NILFS (loop0): invalid segment: Checksum error in segment payload [ 193.381560][ T7272] loop4: detected capacity change from 0 to 4096 [ 193.389943][ T7270] NILFS (loop0): trying rollback from an earlier position [pid 7272] close(3 [pid 4994] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7274] <... munmap resumed>) = 0 [pid 7273] ioctl(4, LOOP_SET_FD, 3 [pid 7272] <... close resumed>) = 0 [pid 7274] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7274] ioctl(4, LOOP_SET_FD, 3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7275] <... write resumed>) = 2097152 [pid 7274] <... ioctl resumed>) = 0 [pid 7274] close(3) = 0 [pid 7274] mkdir("./file0", 0777 [pid 7272] mkdir("./file0", 0777 [pid 4994] lstat("./188/file0", [pid 7272] <... mkdir resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7274] <... mkdir resumed>) = 0 [pid 7272] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7275] munmap(0x7f46b9f9b000, 2097152 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7274] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7275] <... munmap resumed>) = 0 [pid 4994] getdents64(4, [pid 7275] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7275] <... openat resumed>) = 4 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [ 193.417208][ T7270] NILFS (loop0): recovery complete [ 193.419733][ T7274] loop5: detected capacity change from 0 to 4096 [ 193.422958][ T7273] loop2: detected capacity change from 0 to 4096 [ 193.446292][ T7272] NILFS (loop4): invalid segment: Checksum error in segment payload [ 193.448301][ T7275] loop3: detected capacity change from 0 to 4096 [pid 7275] ioctl(4, LOOP_SET_FD, 3 [pid 7273] <... ioctl resumed>) = 0 [pid 4994] close(4 [pid 7275] <... ioctl resumed>) = 0 [pid 7275] close(3) = 0 [pid 7275] mkdir("./file0", 0777) = 0 [pid 7275] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7273] close(3 [pid 4994] <... close resumed>) = 0 [pid 7273] <... close resumed>) = 0 [pid 7270] <... mount resumed>) = 0 [pid 4994] rmdir("./188/file0" [pid 7273] mkdir("./file0", 0777 [pid 7270] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... rmdir resumed>) = 0 [pid 7273] <... mkdir resumed>) = 0 [pid 7270] <... openat resumed>) = 3 [pid 4994] getdents64(3, [pid 7273] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7270] chdir("./file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7270] <... chdir resumed>) = 0 [pid 4994] close(3 [pid 7270] ioctl(4, LOOP_CLR_FD [pid 4994] <... close resumed>) = 0 [pid 7270] <... ioctl resumed>) = 0 [pid 4994] rmdir("./188" [pid 7270] close(4 [pid 4994] <... rmdir resumed>) = 0 [pid 7270] <... close resumed>) = 0 [pid 4994] mkdir("./189", 0777 [pid 7270] creat("./bus", 000 [pid 4994] <... mkdir resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3 [pid 7270] <... creat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [pid 7270] unlink("./bus" [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7270] <... unlink resumed>) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7277 [ 193.455880][ T7272] NILFS (loop4): trying rollback from an earlier position [ 193.469232][ T7274] NILFS (loop5): invalid segment: Checksum error in segment payload [ 193.470789][ T7276] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 193.490075][ T7274] NILFS (loop5): trying rollback from an earlier position [pid 7270] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7277 attached [pid 7277] chdir("./189") = 0 [pid 7277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7277] setpgid(0, 0) = 0 [pid 7277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7277] write(3, "1000", 4) = 4 [pid 7277] close(3) = 0 [pid 7277] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7277] memfd_create("syzkaller", 0) = 3 [pid 7277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 193.512253][ T7273] NILFS (loop2): invalid segment: Checksum error in segment payload [ 193.513357][ T7275] NILFS (loop3): invalid segment: Checksum error in segment payload [ 193.538911][ T7272] NILFS (loop4): recovery complete [ 193.555380][ T7275] NILFS (loop3): trying rollback from an earlier position [pid 7277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7270] <... pwritev2 resumed>) = 65007 [pid 7270] exit_group(0) = ? [pid 7272] <... mount resumed>) = 0 [pid 7272] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7272] chdir("./file0") = 0 [pid 7272] ioctl(4, LOOP_CLR_FD) = 0 [pid 7272] close(4 [pid 7270] +++ exited with 0 +++ [pid 7272] <... close resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7270, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 7272] creat("./bus", 000 [pid 4993] umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 7272] <... creat resumed>) = 4 [ 193.570810][ T7273] NILFS (loop2): trying rollback from an earlier position [ 193.580436][ T7278] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7272] unlink("./bus" [pid 4993] fstat(3, [pid 7272] <... unlink resumed>) = 0 [pid 7272] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7277] <... write resumed>) = 2097152 [pid 7277] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7277] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7277] <... openat resumed>) = 4 [pid 7273] <... mount resumed>) = 0 [pid 7272] <... pwritev2 resumed>) = 65007 [pid 4993] umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7273] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7272] exit_group(0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7273] <... openat resumed>) = 3 [pid 7272] <... exit_group resumed>) = ? [pid 4993] lstat("./189/binderfs", [pid 7277] ioctl(4, LOOP_SET_FD, 3 [pid 7273] chdir("./file0" [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7273] <... chdir resumed>) = 0 [pid 4993] unlink("./189/binderfs" [pid 7273] ioctl(4, LOOP_CLR_FD [pid 4993] <... unlink resumed>) = 0 [pid 7273] <... ioctl resumed>) = 0 [pid 4993] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7273] close(4) = 0 [pid 7273] creat("./bus", 000 [pid 7272] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7272, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 7273] <... creat resumed>) = 4 [pid 4997] <... restart_syscall resumed>) = 0 [pid 7273] unlink("./bus") = 0 [ 193.623319][ T7273] NILFS (loop2): recovery complete [ 193.632632][ T7279] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 193.658290][ T7275] NILFS (loop3): recovery complete [ 193.665688][ T7274] NILFS (loop5): recovery complete [pid 7273] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7274] <... mount resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 7274] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] fstat(3, [pid 7277] <... ioctl resumed>) = 0 [pid 7275] <... mount resumed>) = 0 [pid 7274] <... openat resumed>) = 3 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 7273] <... pwritev2 resumed>) = 65007 [pid 7273] exit_group(0) = ? [pid 7277] close(3 [pid 7275] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7274] chdir("./file0" [pid 4997] getdents64(3, [pid 4993] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7277] <... close resumed>) = 0 [pid 7275] <... openat resumed>) = 3 [pid 7274] <... chdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7277] mkdir("./file0", 0777 [pid 7275] chdir("./file0" [pid 7274] ioctl(4, LOOP_CLR_FD [pid 4997] umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7277] <... mkdir resumed>) = 0 [pid 7275] <... chdir resumed>) = 0 [pid 7274] <... ioctl resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7277] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7275] ioctl(4, LOOP_CLR_FD [ 193.697935][ T7277] loop1: detected capacity change from 0 to 4096 [ 193.709144][ T7281] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 193.722817][ T7280] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7274] close(4 [pid 7273] +++ exited with 0 +++ [pid 4997] lstat("./189/binderfs", [pid 4993] lstat("./189/file0", [pid 7275] <... ioctl resumed>) = 0 [pid 7274] <... close resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7273, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7274] creat("./bus", 000 [pid 4997] unlink("./189/binderfs" [pid 4993] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7275] close(4 [pid 4997] <... unlink resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7275] <... close resumed>) = 0 [pid 4997] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7275] creat("./bus", 000 [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, [pid 7274] <... creat resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7274] unlink("./bus" [pid 4995] umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4995] openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(4, [pid 7274] <... unlink resumed>) = 0 [pid 4995] <... openat resumed>) = 3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7274] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] fstat(3, [pid 4993] close(4 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4995] getdents64(3, [pid 4993] rmdir("./189/file0" [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(3, [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4995] lstat("./185/binderfs", [pid 4993] close(3 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 4995] unlink("./185/binderfs" [pid 4993] rmdir("./189" [pid 4995] <... unlink resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4995] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] mkdir("./190", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7275] <... creat resumed>) = 4 [pid 7275] unlink("./bus" [pid 4993] close(3 [pid 7275] <... unlink resumed>) = 0 [pid 7275] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... close resumed>) = 0 [pid 7274] <... pwritev2 resumed>) = 65007 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [ 193.750260][ T7277] NILFS (loop1): invalid segment: Checksum error in segment payload [ 193.776021][ T7277] NILFS (loop1): trying rollback from an earlier position [pid 7274] exit_group(0) = ? ./strace-static-x86_64: Process 7282 attached [pid 4995] <... umount2 resumed>) = 0 [pid 7282] chdir("./190" [pid 4995] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7282 [pid 7282] <... chdir resumed>) = 0 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7282] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] lstat("./185/file0", [pid 7282] <... prctl resumed>) = 0 [pid 7282] setpgid(0, 0 [pid 4995] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7282] <... setpgid resumed>) = 0 [pid 4995] umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7282] <... openat resumed>) = 3 [pid 4995] openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7282] write(3, "1000", 4 [pid 7274] +++ exited with 0 +++ [pid 7282] <... write resumed>) = 4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7274, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4995] <... openat resumed>) = 4 [pid 7282] close(3 [pid 4995] fstat(4, [pid 7282] <... close resumed>) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7282] symlink("/dev/binderfs", "./binderfs" [pid 4995] getdents64(4, [pid 7282] <... symlink resumed>) = 0 [pid 7275] <... pwritev2 resumed>) = 65007 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7282] memfd_create("syzkaller", 0 [pid 7275] exit_group(0 [pid 4995] getdents64(4, [pid 7282] <... memfd_create resumed>) = 3 [pid 7275] <... exit_group resumed>) = ? [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [ 193.823930][ T7277] NILFS (loop1): recovery complete [pid 4998] umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7282] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] close(4 [pid 4998] openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./189/binderfs") = 0 [pid 4998] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 4995] rmdir("./185/file0" [pid 7275] +++ exited with 0 +++ [pid 4995] <... rmdir resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7275, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4995] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... close resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] rmdir("./185" [pid 4996] <... openat resumed>) = 3 [pid 4995] <... rmdir resumed>) = 0 [pid 4996] fstat(3, [pid 4995] mkdir("./186", 0777 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... mkdir resumed>) = 0 [pid 4996] getdents64(3, [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] ioctl(3, LOOP_CLR_FD [pid 4996] lstat("./189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] unlink("./189/binderfs" [pid 4995] close(3 [pid 4996] <... unlink resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7277] <... mount resumed>) = 0 [pid 4996] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7277] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7277] chdir("./file0") = 0 [pid 7277] ioctl(4, LOOP_CLR_FD) = 0 [pid 4997] <... umount2 resumed>) = 0 [pid 7277] close(4) = 0 [pid 7277] creat("./bus", 000 [pid 4997] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7284 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 7284 attached [pid 4997] lstat("./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./189/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./189") = 0 [pid 7284] chdir("./186") = 0 [pid 4997] mkdir("./190", 0777 [pid 7284] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... mkdir resumed>) = 0 [pid 7282] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7284] <... prctl resumed>) = 0 [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7285 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7284] setpgid(0, 0) = 0 [pid 7284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7284] write(3, "1000", 4) = 4 [pid 7284] close(3) = 0 [pid 7284] symlink("/dev/binderfs", "./binderfs"./strace-static-x86_64: Process 7285 attached ) = 0 [pid 4998] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7285] chdir("./190" [pid 7284] memfd_create("syzkaller", 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7285] <... chdir resumed>) = 0 [pid 7284] <... memfd_create resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7285] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... openat resumed>) = 4 [pid 7285] <... prctl resumed>) = 0 [pid 7284] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] fstat(4, [pid 7285] setpgid(0, 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7285] <... setpgid resumed>) = 0 [ 193.888310][ T7283] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(4, [pid 7285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7285] <... openat resumed>) = 3 [pid 4998] getdents64(4, [pid 7285] write(3, "1000", 4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 7285] <... write resumed>) = 4 [pid 4998] close(4 [pid 7285] close(3 [pid 4998] <... close resumed>) = 0 [pid 4996] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7285] <... close resumed>) = 0 [pid 4998] rmdir("./189/file0" [pid 7285] symlink("/dev/binderfs", "./binderfs" [pid 7277] <... creat resumed>) = 4 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7285] <... symlink resumed>) = 0 [pid 7277] unlink("./bus" [pid 4998] getdents64(3, [pid 4996] lstat("./189/file0", [pid 7285] memfd_create("syzkaller", 0 [pid 7277] <... unlink resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7285] <... memfd_create resumed>) = 3 [pid 7277] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] close(3 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4998] <... close resumed>) = 0 [pid 4996] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7285] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4998] rmdir("./189" [pid 7284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... rmdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] mkdir("./190", 0777 [pid 4996] openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... mkdir resumed>) = 0 [pid 7277] <... pwritev2 resumed>) = 65007 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... openat resumed>) = 4 [pid 7277] exit_group(0 [pid 4998] <... openat resumed>) = 3 [pid 4996] fstat(4, [pid 7277] <... exit_group resumed>) = ? [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] close(3 [pid 4996] getdents64(4, [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7286 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./189/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./189") = 0 [pid 4996] mkdir("./190", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 7286 attached [pid 7277] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7286] chdir("./190" [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7286] <... chdir resumed>) = 0 [pid 4996] close(3 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7277, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 7286] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7285] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... close resumed>) = 0 [pid 4994] umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7286] <... prctl resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7286] setpgid(0, 0 [pid 7282] <... write resumed>) = 2097152 [pid 7282] munmap(0x7f46b9f9b000, 2097152 [pid 7286] <... setpgid resumed>) = 0 [pid 7282] <... munmap resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7287 [pid 7286] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 3 [pid 7286] write(3, "1000", 4 [pid 4994] fstat(3, [pid 7286] <... write resumed>) = 4 [pid 7282] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 7287 attached [pid 7286] close(3 [pid 7282] <... openat resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7287] chdir("./190" [pid 7286] <... close resumed>) = 0 [pid 7282] ioctl(4, LOOP_SET_FD, 3 [pid 4994] getdents64(3, [pid 7287] <... chdir resumed>) = 0 [pid 7286] symlink("/dev/binderfs", "./binderfs" [pid 7287] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7287] <... prctl resumed>) = 0 [pid 4994] umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7287] setpgid(0, 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7287] <... setpgid resumed>) = 0 [pid 7286] <... symlink resumed>) = 0 [pid 4994] lstat("./189/binderfs", [pid 7287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7286] memfd_create("syzkaller", 0 [pid 7287] <... openat resumed>) = 3 [pid 7286] <... memfd_create resumed>) = 3 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7287] write(3, "1000", 4 [pid 7286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4994] unlink("./189/binderfs" [pid 7287] <... write resumed>) = 4 [pid 7286] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7287] close(3 [pid 4994] <... unlink resumed>) = 0 [pid 7287] <... close resumed>) = 0 [pid 4994] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7287] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7287] memfd_create("syzkaller", 0) = 3 [pid 7287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7282] <... ioctl resumed>) = 0 [pid 7282] close(3) = 0 [pid 7282] mkdir("./file0", 0777) = 0 [pid 7282] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7284] <... write resumed>) = 2097152 [ 194.038738][ T7282] loop0: detected capacity change from 0 to 4096 [pid 7284] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7284] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 7284] ioctl(4, LOOP_SET_FD, 3 [pid 7285] <... write resumed>) = 2097152 [pid 7284] <... ioctl resumed>) = 0 [pid 7284] close(3) = 0 [pid 7284] mkdir("./file0", 0777 [pid 7285] munmap(0x7f46b9f9b000, 2097152 [pid 7284] <... mkdir resumed>) = 0 [pid 7284] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7285] <... munmap resumed>) = 0 [pid 7285] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7285] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, [pid 7286] <... write resumed>) = 2097152 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./189/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 194.110314][ T7284] loop2: detected capacity change from 0 to 4096 [ 194.114263][ T7282] NILFS (loop0): invalid segment: Checksum error in segment payload [ 194.135010][ T7285] loop4: detected capacity change from 0 to 4096 [ 194.135170][ T7284] NILFS (loop2): invalid segment: Checksum error in segment payload [pid 4994] close(3) = 0 [pid 7286] munmap(0x7f46b9f9b000, 2097152 [pid 4994] rmdir("./189" [pid 7286] <... munmap resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 7286] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4994] mkdir("./190", 0777 [pid 7286] <... openat resumed>) = 4 [pid 4994] <... mkdir resumed>) = 0 [pid 7286] ioctl(4, LOOP_SET_FD, 3 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 7285] close(3 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7285] <... close resumed>) = 0 [pid 7287] <... write resumed>) = 2097152 [pid 7285] mkdir("./file0", 0777) = 0 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7288 [pid 7285] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 7288 attached [pid 7286] <... ioctl resumed>) = 0 [pid 7287] munmap(0x7f46b9f9b000, 2097152 [pid 7286] close(3 [pid 7288] chdir("./190" [pid 7286] <... close resumed>) = 0 [pid 7288] <... chdir resumed>) = 0 [pid 7286] mkdir("./file0", 0777 [pid 7288] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7286] <... mkdir resumed>) = 0 [pid 7288] <... prctl resumed>) = 0 [pid 7288] setpgid(0, 0 [pid 7286] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7288] <... setpgid resumed>) = 0 [ 194.154386][ T7284] NILFS (loop2): trying rollback from an earlier position [ 194.168929][ T7286] loop5: detected capacity change from 0 to 4096 [ 194.187391][ T7282] NILFS (loop0): trying rollback from an earlier position [ 194.194759][ T7284] NILFS (loop2): recovery complete [pid 7288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7287] <... munmap resumed>) = 0 [pid 7287] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7287] ioctl(4, LOOP_SET_FD, 3 [pid 7288] <... openat resumed>) = 3 [pid 7287] <... ioctl resumed>) = 0 [pid 7287] close(3) = 0 [pid 7287] mkdir("./file0", 0777 [pid 7288] write(3, "1000", 4) = 4 [pid 7284] <... mount resumed>) = 0 [pid 7287] <... mkdir resumed>) = 0 [pid 7287] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7288] close(3 [pid 7284] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7288] <... close resumed>) = 0 [pid 7284] <... openat resumed>) = 3 [ 194.208522][ T7285] NILFS (loop4): invalid segment: Checksum error in segment payload [ 194.216158][ T7286] NILFS (loop5): invalid segment: Checksum error in segment payload [ 194.223209][ T7287] loop3: detected capacity change from 0 to 4096 [ 194.230836][ T7282] NILFS (loop0): recovery complete [ 194.237168][ T7286] NILFS (loop5): trying rollback from an earlier position [ 194.237422][ T7289] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 194.255218][ T7286] NILFS (loop5): recovery complete [pid 7282] <... mount resumed>) = 0 [pid 7288] symlink("/dev/binderfs", "./binderfs" [pid 7286] <... mount resumed>) = 0 [pid 7284] chdir("./file0" [pid 7282] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7288] <... symlink resumed>) = 0 [pid 7286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7284] <... chdir resumed>) = 0 [pid 7282] <... openat resumed>) = 3 [pid 7288] memfd_create("syzkaller", 0 [pid 7286] <... openat resumed>) = 3 [pid 7284] ioctl(4, LOOP_CLR_FD [pid 7282] chdir("./file0" [pid 7288] <... memfd_create resumed>) = 3 [pid 7286] chdir("./file0" [pid 7284] <... ioctl resumed>) = 0 [pid 7282] <... chdir resumed>) = 0 [pid 7288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7286] <... chdir resumed>) = 0 [pid 7284] close(4 [pid 7282] ioctl(4, LOOP_CLR_FD [pid 7288] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7286] ioctl(4, LOOP_CLR_FD [pid 7284] <... close resumed>) = 0 [pid 7282] <... ioctl resumed>) = 0 [pid 7284] creat("./bus", 000 [pid 7282] close(4 [pid 7286] <... ioctl resumed>) = 0 [pid 7282] <... close resumed>) = 0 [ 194.262430][ T7290] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 194.263988][ T7285] NILFS (loop4): trying rollback from an earlier position [ 194.274901][ T7291] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7286] close(4 [pid 7284] <... creat resumed>) = 4 [pid 7282] creat("./bus", 000 [pid 7286] <... close resumed>) = 0 [pid 7284] unlink("./bus" [pid 7282] <... creat resumed>) = 4 [pid 7286] creat("./bus", 000 [pid 7284] <... unlink resumed>) = 0 [pid 7282] unlink("./bus" [pid 7284] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7282] <... unlink resumed>) = 0 [pid 7282] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0) = 65007 [pid 7284] <... pwritev2 resumed>) = 65007 [ 194.316524][ T7287] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 7282] exit_group(0 [pid 7284] exit_group(0 [pid 7282] <... exit_group resumed>) = ? [pid 7288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7284] <... exit_group resumed>) = ? [pid 7282] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7282, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 7284] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7284, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4995] restart_syscall(<... resuming interrupted clone ...> [pid 4993] <... restart_syscall resumed>) = 0 [pid 4995] <... restart_syscall resumed>) = 0 [pid 4993] umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4995] openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... openat resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 4995] fstat(3, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, [pid 4995] getdents64(3, [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./190/binderfs", [pid 4995] lstat("./186/binderfs", [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./190/binderfs" [pid 4995] unlink("./186/binderfs" [pid 4993] <... unlink resumed>) = 0 [pid 4995] <... unlink resumed>) = 0 [pid 4993] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7286] <... creat resumed>) = 4 [pid 7286] unlink("./bus") = 0 [ 194.395461][ T7287] NILFS (loop3): trying rollback from an earlier position [ 194.406556][ T7285] NILFS (loop4): recovery complete [pid 7286] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7285] <... mount resumed>) = 0 [pid 7285] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7285] chdir("./file0") = 0 [pid 7285] ioctl(4, LOOP_CLR_FD) = 0 [pid 7285] close(4) = 0 [pid 7285] creat("./bus", 000 [pid 7286] <... pwritev2 resumed>) = 65007 [pid 7286] exit_group(0) = ? [pid 7288] <... write resumed>) = 2097152 [pid 7288] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7288] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7288] ioctl(4, LOOP_SET_FD, 3 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./190/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7286] +++ exited with 0 +++ [pid 4993] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7286, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4993] <... openat resumed>) = 4 [pid 7288] <... ioctl resumed>) = 0 [pid 4998] umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(4, [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7288] close(3) = 0 [pid 4998] openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 194.453107][ T7292] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 194.483818][ T7288] loop1: detected capacity change from 0 to 4096 [ 194.487868][ T7287] NILFS (loop3): recovery complete [pid 7288] mkdir("./file0", 0777 [pid 7285] <... creat resumed>) = 4 [pid 4998] <... openat resumed>) = 3 [pid 7288] <... mkdir resumed>) = 0 [pid 7285] unlink("./bus" [pid 4998] fstat(3, [pid 4993] getdents64(4, [pid 7288] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7285] <... unlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7285] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] getdents64(3, [pid 4993] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(4 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... close resumed>) = 0 [pid 4998] lstat("./190/binderfs", [pid 4993] rmdir("./190/file0" [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 4998] unlink("./190/binderfs" [pid 4993] getdents64(3, [pid 4998] <... unlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] close(3 [pid 7285] <... pwritev2 resumed>) = 65007 [pid 4995] <... umount2 resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 7285] exit_group(0 [pid 4993] rmdir("./190" [pid 7285] <... exit_group resumed>) = ? [pid 4993] <... rmdir resumed>) = 0 [pid 7285] +++ exited with 0 +++ [pid 4993] mkdir("./191", 0777 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7285, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] <... mkdir resumed>) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4997] umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] ioctl(3, LOOP_CLR_FD [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] close(3 [pid 4997] <... openat resumed>) = 3 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7294 [pid 4995] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./186/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4995] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ./strace-static-x86_64: Process 7294 attached [pid 4995] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7294] chdir("./191" [pid 4995] getdents64(4, [pid 7294] <... chdir resumed>) = 0 [pid 4995] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7294] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4995] close(4 [pid 7294] <... prctl resumed>) = 0 [pid 4995] <... close resumed>) = 0 [pid 7294] setpgid(0, 0 [pid 4995] rmdir("./186/file0" [pid 7294] <... setpgid resumed>) = 0 [pid 4997] fstat(3, [pid 4995] <... rmdir resumed>) = 0 [pid 7294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 7294] <... openat resumed>) = 3 [pid 4997] getdents64(3, [pid 4995] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7294] write(3, "1000", 4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4995] close(3 [pid 7294] <... write resumed>) = 4 [pid 4997] umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] <... close resumed>) = 0 [pid 7294] close(3 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4995] rmdir("./186" [pid 7294] <... close resumed>) = 0 [pid 4997] lstat("./190/binderfs", [pid 4995] <... rmdir resumed>) = 0 [pid 7294] symlink("/dev/binderfs", "./binderfs" [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4995] mkdir("./187", 0777 [pid 7294] <... symlink resumed>) = 0 [pid 4997] unlink("./190/binderfs" [pid 4995] <... mkdir resumed>) = 0 [ 194.544743][ T7288] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7294] memfd_create("syzkaller", 0 [pid 4997] <... unlink resumed>) = 0 [pid 4995] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7294] <... memfd_create resumed>) = 3 [pid 4995] <... openat resumed>) = 3 [pid 7294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4995] ioctl(3, LOOP_CLR_FD [pid 7294] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4995] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4995] close(3) = 0 [pid 4995] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7287] <... mount resumed>) = 0 [pid 7287] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4995] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7295 [pid 7287] <... openat resumed>) = 3 [pid 7287] chdir("./file0") = 0 [pid 7287] ioctl(4, LOOP_CLR_FD) = 0 [pid 7287] close(4) = 0 [pid 7287] creat("./bus", 000./strace-static-x86_64: Process 7295 attached [pid 7295] chdir("./187") = 0 [pid 7295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7295] setpgid(0, 0) = 0 [pid 7295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7295] write(3, "1000", 4) = 4 [pid 7295] close(3) = 0 [pid 7295] symlink("/dev/binderfs", "./binderfs" [pid 7294] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7295] <... symlink resumed>) = 0 [pid 7295] memfd_create("syzkaller", 0) = 3 [pid 7295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 194.593030][ T7288] NILFS (loop1): trying rollback from an earlier position [ 194.602069][ T7293] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./190/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7287] <... creat resumed>) = 4 [pid 4998] <... openat resumed>) = 4 [pid 7287] unlink("./bus" [pid 4998] fstat(4, [pid 7287] <... unlink resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7287] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./190/file0" [pid 7287] <... pwritev2 resumed>) = 65007 [pid 4998] <... rmdir resumed>) = 0 [pid 7287] exit_group(0 [pid 4998] getdents64(3, [pid 7287] <... exit_group resumed>) = ? [ 194.685542][ T7288] NILFS (loop1): recovery complete [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7287] +++ exited with 0 +++ [pid 4998] close(3) = 0 [pid 4998] rmdir("./190" [pid 4997] <... umount2 resumed>) = 0 [pid 4998] <... rmdir resumed>) = 0 [pid 4998] mkdir("./191", 0777) = 0 [pid 7288] <... mount resumed>) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7287, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 7288] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4996] umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7288] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7288] chdir("./file0" [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] close(3 [pid 7288] <... chdir resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4996] <... openat resumed>) = 3 [pid 7288] ioctl(4, LOOP_CLR_FD [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] fstat(3, [pid 7288] <... ioctl resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7288] close(4 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7297 [pid 4996] getdents64(3, [pid 7288] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7288] creat("./bus", 000 [pid 4996] umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./190/binderfs", ./strace-static-x86_64: Process 7297 attached {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7297] chdir("./191" [pid 4996] unlink("./190/binderfs" [pid 7297] <... chdir resumed>) = 0 [pid 7297] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] <... unlink resumed>) = 0 [pid 7297] <... prctl resumed>) = 0 [pid 4997] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] setpgid(0, 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7297] <... setpgid resumed>) = 0 [pid 4997] lstat("./190/file0", [pid 7297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7297] <... openat resumed>) = 3 [pid 7294] <... write resumed>) = 2097152 [pid 4997] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] write(3, "1000", 4 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7297] <... write resumed>) = 4 [pid 4997] openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7297] close(3 [pid 4997] <... openat resumed>) = 4 [pid 7297] <... close resumed>) = 0 [pid 4997] fstat(4, [pid 7297] symlink("/dev/binderfs", "./binderfs" [pid 7294] munmap(0x7f46b9f9b000, 2097152 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7297] <... symlink resumed>) = 0 [pid 4997] getdents64(4, [pid 7297] memfd_create("syzkaller", 0 [pid 7294] <... munmap resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7297] <... memfd_create resumed>) = 3 [pid 7294] openat(AT_FDCWD, "/dev/loop0", O_RDWR [ 194.718411][ T7296] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4997] getdents64(4, [pid 7297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7294] <... openat resumed>) = 4 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7297] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7294] ioctl(4, LOOP_SET_FD, 3 [pid 4997] close(4 [pid 7294] <... ioctl resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./190/file0") = 0 [pid 7297] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7288] <... creat resumed>) = 4 [pid 4997] getdents64(3, [pid 7288] unlink("./bus" [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./190") = 0 [pid 4997] mkdir("./191", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7288] <... unlink resumed>) = 0 [pid 7288] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7298 ./strace-static-x86_64: Process 7298 attached [pid 7298] chdir("./191") = 0 [pid 7298] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7294] close(3 [pid 7298] <... prctl resumed>) = 0 [pid 7294] <... close resumed>) = 0 [pid 7298] setpgid(0, 0 [pid 7295] <... write resumed>) = 2097152 [pid 7294] mkdir("./file0", 0777 [pid 7298] <... setpgid resumed>) = 0 [pid 7294] <... mkdir resumed>) = 0 [pid 7298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7295] munmap(0x7f46b9f9b000, 2097152 [pid 7294] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7298] <... openat resumed>) = 3 [pid 7295] <... munmap resumed>) = 0 [pid 7298] write(3, "1000", 4) = 4 [pid 7295] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 7298] close(3 [pid 7295] <... openat resumed>) = 4 [pid 7298] <... close resumed>) = 0 [ 194.785267][ T7294] loop0: detected capacity change from 0 to 4096 [pid 7295] ioctl(4, LOOP_SET_FD, 3 [pid 7298] symlink("/dev/binderfs", "./binderfs" [pid 7288] <... pwritev2 resumed>) = 65007 [pid 7298] <... symlink resumed>) = 0 [pid 7298] memfd_create("syzkaller", 0) = 3 [pid 7298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7288] exit_group(0) = ? [pid 7295] <... ioctl resumed>) = 0 [pid 7295] close(3) = 0 [pid 7295] mkdir("./file0", 0777 [pid 7288] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7288, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4994] umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7295] <... mkdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7295] mount("/dev/loop2", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4994] openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... umount2 resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4996] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] lstat("./190/file0", [pid 4994] getdents64(3, [pid 7298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [ 194.840021][ T7295] loop2: detected capacity change from 0 to 4096 [ 194.872963][ T7294] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 4994] umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7297] <... write resumed>) = 2097152 [pid 4996] openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] lstat("./190/binderfs", [pid 7297] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... openat resumed>) = 4 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7297] <... munmap resumed>) = 0 [pid 4996] fstat(4, [pid 4994] unlink("./190/binderfs" [pid 7297] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 7297] <... openat resumed>) = 4 [pid 4996] getdents64(4, [pid 4994] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 7297] <... ioctl resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7297] close(3 [pid 4996] close(4 [pid 7297] <... close resumed>) = 0 [pid 7297] mkdir("./file0", 0777 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./190/file0" [pid 7297] <... mkdir resumed>) = 0 [pid 4996] <... rmdir resumed>) = 0 [pid 7297] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./190") = 0 [pid 4996] mkdir("./191", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [ 194.912860][ T7294] NILFS (loop0): trying rollback from an earlier position [ 194.927491][ T7295] NILFS (loop2): invalid segment: Checksum error in segment payload [ 194.945963][ T7297] loop5: detected capacity change from 0 to 4096 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7298] <... write resumed>) = 2097152 [pid 7298] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7299 [pid 7298] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7298] ioctl(4, LOOP_SET_FD, 3 [pid 7294] <... mount resumed>) = 0 [ 194.979189][ T7295] NILFS (loop2): trying rollback from an earlier position [ 194.989087][ T7294] NILFS (loop0): recovery complete [ 194.996355][ T7297] NILFS (loop5): invalid segment: Checksum error in segment payload [ 195.007689][ T7300] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 195.009181][ T7298] loop4: detected capacity change from 0 to 4096 [pid 7294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 ./strace-static-x86_64: Process 7299 attached [pid 7294] chdir("./file0" [pid 7299] chdir("./191" [pid 7294] <... chdir resumed>) = 0 [pid 7299] <... chdir resumed>) = 0 [pid 7299] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7294] ioctl(4, LOOP_CLR_FD [pid 7299] <... prctl resumed>) = 0 [pid 7294] <... ioctl resumed>) = 0 [pid 7299] setpgid(0, 0 [pid 7294] close(4 [pid 7299] <... setpgid resumed>) = 0 [pid 7294] <... close resumed>) = 0 [pid 7299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7294] creat("./bus", 000 [pid 7299] <... openat resumed>) = 3 [ 195.024205][ T7297] NILFS (loop5): trying rollback from an earlier position [pid 7299] write(3, "1000", 4) = 4 [pid 7299] close(3) = 0 [pid 7299] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7299] memfd_create("syzkaller", 0) = 3 [pid 7299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7294] <... creat resumed>) = 4 [pid 7294] unlink("./bus") = 0 [ 195.052693][ T7295] NILFS (loop2): recovery complete [pid 7294] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7298] <... ioctl resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./190/file0", [pid 7295] <... mount resumed>) = 0 [pid 7295] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7295] <... openat resumed>) = 3 [pid 4994] umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7295] chdir("./file0") = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7295] ioctl(4, LOOP_CLR_FD) = 0 [pid 4994] openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7295] close(4 [pid 4994] <... openat resumed>) = 4 [pid 7295] <... close resumed>) = 0 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 7298] close(3 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7298] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 7298] mkdir("./file0", 0777 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 7295] creat("./bus", 000 [pid 4994] <... close resumed>) = 0 [pid 4994] rmdir("./190/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./190") = 0 [pid 7294] <... pwritev2 resumed>) = 65007 [pid 4994] mkdir("./191", 0777 [pid 7298] <... mkdir resumed>) = 0 [pid 7294] exit_group(0 [pid 4994] <... mkdir resumed>) = 0 [pid 7298] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7294] <... exit_group resumed>) = ? [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7294] +++ exited with 0 +++ [pid 4994] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7294, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [ 195.088836][ T7301] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 195.119054][ T7297] NILFS (loop5): recovery complete [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4994] close(3 [pid 4993] <... restart_syscall resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7297] <... mount resumed>) = 0 [pid 7295] <... creat resumed>) = 4 [pid 4993] umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7295] unlink("./bus" [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7303 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7297] <... openat resumed>) = 3 [pid 7295] <... unlink resumed>) = 0 [pid 4993] openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7297] chdir("./file0" [pid 7295] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... openat resumed>) = 3 ./strace-static-x86_64: Process 7303 attached [pid 7297] <... chdir resumed>) = 0 [pid 4993] fstat(3, [pid 7303] chdir("./191" [pid 7297] ioctl(4, LOOP_CLR_FD [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7303] <... chdir resumed>) = 0 [pid 7297] <... ioctl resumed>) = 0 [pid 4993] getdents64(3, [pid 7303] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7297] close(4 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7303] <... prctl resumed>) = 0 [pid 7297] <... close resumed>) = 0 [pid 4993] umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7303] setpgid(0, 0 [pid 7297] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7303] <... setpgid resumed>) = 0 [pid 4993] lstat("./191/binderfs", [pid 7303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7303] <... openat resumed>) = 3 [pid 4993] unlink("./191/binderfs" [pid 7303] write(3, "1000", 4 [pid 4993] <... unlink resumed>) = 0 [pid 7303] <... write resumed>) = 4 [pid 4993] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7303] close(3) = 0 [pid 7303] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7303] memfd_create("syzkaller", 0) = 3 [pid 7295] <... pwritev2 resumed>) = 65007 [pid 7303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7295] exit_group(0) = ? [ 195.156215][ T7302] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 195.160936][ T7298] NILFS (loop4): invalid segment: Checksum error in segment payload [pid 7299] <... write resumed>) = 2097152 [pid 7295] +++ exited with 0 +++ [pid 4995] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7295, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4995] umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] <... creat resumed>) = 4 [pid 4995] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7297] unlink("./bus" [pid 4995] openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 7297] <... unlink resumed>) = 0 [pid 4995] fstat(3, [pid 7297] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4995] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4995] getdents64(3, [pid 7299] munmap(0x7f46b9f9b000, 2097152 [pid 4995] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7299] <... munmap resumed>) = 0 [pid 4995] umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4995] lstat("./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7299] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4995] unlink("./187/binderfs" [pid 7299] <... openat resumed>) = 4 [pid 4995] <... unlink resumed>) = 0 [pid 7299] ioctl(4, LOOP_SET_FD, 3 [pid 4995] umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7297] <... pwritev2 resumed>) = 65007 [pid 7297] exit_group(0) = ? [pid 7297] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7297, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4998] umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7303] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./191/binderfs" [pid 7299] <... ioctl resumed>) = 0 [pid 4998] <... unlink resumed>) = 0 [pid 7299] close(3 [pid 4998] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7299] <... close resumed>) = 0 [pid 7299] mkdir("./file0", 0777) = 0 [ 195.230382][ T7299] loop3: detected capacity change from 0 to 4096 [ 195.243054][ T7298] NILFS (loop4): trying rollback from an earlier position [pid 7299] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4) = 0 [pid 4993] rmdir("./191/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./191") = 0 [pid 4993] mkdir("./192", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [ 195.298717][ T7299] NILFS (loop3): invalid segment: Checksum error in segment payload [ 195.335293][ T7298] NILFS (loop4): recovery complete [pid 7303] <... write resumed>) = 2097152 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7303] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7304 [pid 7303] <... munmap resumed>) = 0 [pid 7303] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7303] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7304 attached [pid 7304] chdir("./192") = 0 [pid 7304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7304] setpgid(0, 0) = 0 [pid 7304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7304] write(3, "1000", 4) = 4 [pid 7304] close(3) = 0 [pid 7304] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7304] memfd_create("syzkaller", 0) = 3 [pid 7304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7298] <... mount resumed>) = 0 [pid 7298] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7298] chdir("./file0") = 0 [pid 7298] ioctl(4, LOOP_CLR_FD) = 0 [pid 7298] close(4) = 0 [pid 7298] creat("./bus", 000 [pid 7303] <... ioctl resumed>) = 0 [pid 7303] close(3) = 0 [pid 7303] mkdir("./file0", 0777) = 0 [pid 7303] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [ 195.344884][ T7299] NILFS (loop3): trying rollback from an earlier position [ 195.360658][ T7303] loop1: detected capacity change from 0 to 4096 [ 195.369691][ T7305] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] close(4) = 0 [pid 4998] rmdir("./191/file0" [pid 7298] <... creat resumed>) = 4 [pid 7298] unlink("./bus" [pid 4998] <... rmdir resumed>) = 0 [pid 7298] <... unlink resumed>) = 0 [pid 4998] getdents64(3, [pid 7298] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7304] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4998] close(3) = 0 [pid 4998] rmdir("./191") = 0 [pid 4998] mkdir("./192", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7298] <... pwritev2 resumed>) = 65007 [pid 4998] <... openat resumed>) = 3 [pid 7298] exit_group(0 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 7298] <... exit_group resumed>) = ? [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7298] +++ exited with 0 +++ [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7307 [ 195.429623][ T7303] NILFS (loop1): invalid segment: Checksum error in segment payload [ 195.438781][ T7299] NILFS (loop3): recovery complete [ 195.463862][ T7303] NILFS (loop1): trying rollback from an earlier position [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7298, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7299] <... mount resumed>) = 0 [pid 7299] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7299] chdir("./file0") = 0 [pid 7299] ioctl(4, LOOP_CLR_FD) = 0 [pid 7299] close(4) = 0 [pid 7299] creat("./bus", 000./strace-static-x86_64: Process 7307 attached [pid 7307] chdir("./192") = 0 [pid 7307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7307] setpgid(0, 0) = 0 [pid 7307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7307] write(3, "1000", 4) = 4 [pid 7307] close(3) = 0 [pid 7307] symlink("/dev/binderfs", "./binderfs" [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4997] umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, [pid 7307] <... symlink resumed>) = 0 [pid 7307] memfd_create("syzkaller", 0) = 3 [pid 7307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./191/binderfs") = 0 [pid 4997] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7304] <... write resumed>) = 2097152 [pid 7304] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7299] <... creat resumed>) = 4 [ 195.485884][ T7306] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7304] ioctl(4, LOOP_SET_FD, 3 [pid 7299] unlink("./bus" [pid 7307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7304] <... ioctl resumed>) = 0 [pid 7299] <... unlink resumed>) = 0 [pid 7299] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7304] close(3) = 0 [pid 7304] mkdir("./file0", 0777) = 0 [pid 7299] <... pwritev2 resumed>) = 65007 [pid 7299] exit_group(0 [pid 7304] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7299] <... exit_group resumed>) = ? [pid 4997] <... umount2 resumed>) = 0 [ 195.554950][ T7304] loop0: detected capacity change from 0 to 4096 [ 195.564571][ T7303] NILFS (loop1): recovery complete [pid 4997] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7303] <... mount resumed>) = 0 [pid 4997] lstat("./191/file0", [pid 7303] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7303] chdir("./file0" [pid 4997] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7303] <... chdir resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7303] ioctl(4, LOOP_CLR_FD) = 0 [pid 4997] openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7303] close(4) = 0 [pid 4997] <... openat resumed>) = 4 [pid 7303] creat("./bus", 000 [pid 7299] +++ exited with 0 +++ [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7299, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4 [pid 4996] umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] rmdir("./191/file0" [pid 4996] openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... rmdir resumed>) = 0 [pid 4997] getdents64(3, [pid 4996] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] fstat(3, [pid 4997] close(3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4997] rmdir("./191" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] mkdir("./192", 0777 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... mkdir resumed>) = 0 [pid 4996] lstat("./191/binderfs", [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] unlink("./191/binderfs" [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] close(3 [pid 4996] <... unlink resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4996] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7310 ./strace-static-x86_64: Process 7310 attached [pid 7303] <... creat resumed>) = 4 [pid 7303] unlink("./bus" [pid 7310] chdir("./192" [pid 7307] <... write resumed>) = 2097152 [pid 7310] <... chdir resumed>) = 0 [pid 7303] <... unlink resumed>) = 0 [pid 7310] prctl(PR_SET_PDEATHSIG, SIGKILL [ 195.611375][ T7309] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 195.612424][ T7304] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7307] munmap(0x7f46b9f9b000, 2097152 [pid 7303] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7310] <... prctl resumed>) = 0 [pid 7307] <... munmap resumed>) = 0 [pid 7310] setpgid(0, 0) = 0 [pid 7307] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 7310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7307] ioctl(4, LOOP_SET_FD, 3 [pid 7310] <... openat resumed>) = 3 [pid 7303] <... pwritev2 resumed>) = 65007 [pid 7310] write(3, "1000", 4 [pid 7303] exit_group(0 [pid 7310] <... write resumed>) = 4 [pid 7303] <... exit_group resumed>) = ? [pid 7310] close(3) = 0 [pid 7310] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7310] memfd_create("syzkaller", 0) = 3 [pid 7310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7303] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7303, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./191/binderfs") = 0 [pid 4994] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7307] <... ioctl resumed>) = 0 [pid 7307] close(3) = 0 [pid 7307] mkdir("./file0", 0777) = 0 [ 195.680921][ T7307] loop5: detected capacity change from 0 to 4096 [ 195.720311][ T7304] NILFS (loop0): trying rollback from an earlier position [pid 7307] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7310] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... umount2 resumed>) = 0 [pid 4996] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7304] <... mount resumed>) = 0 [pid 7304] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7304] chdir("./file0") = 0 [pid 7304] ioctl(4, LOOP_CLR_FD) = 0 [pid 7304] close(4) = 0 [pid 4996] <... openat resumed>) = 4 [ 195.746836][ T7304] NILFS (loop0): recovery complete [ 195.755562][ T7307] NILFS (loop5): invalid segment: Checksum error in segment payload [ 195.781421][ T7311] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7304] creat("./bus", 000 [pid 4996] fstat(4, [pid 4994] <... umount2 resumed>) = 0 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4) = 0 [pid 4996] rmdir("./191/file0") = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./191") = 0 [pid 4996] mkdir("./192", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] close(3 [pid 4994] lstat("./191/file0", [pid 4996] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7312 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7310] <... write resumed>) = 2097152 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./191/file0"./strace-static-x86_64: Process 7312 attached [pid 7312] chdir("./192" [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3 [pid 7312] <... chdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 7312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7304] <... creat resumed>) = 4 [pid 4994] rmdir("./191" [pid 7312] setpgid(0, 0 [pid 7304] unlink("./bus" [pid 7312] <... setpgid resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] mkdir("./192", 0777 [pid 7312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... mkdir resumed>) = 0 [pid 7312] <... openat resumed>) = 3 [pid 7304] <... unlink resumed>) = 0 [ 195.796811][ T7307] NILFS (loop5): trying rollback from an earlier position [pid 7312] write(3, "1000", 4 [pid 7304] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7312] <... write resumed>) = 4 [pid 7312] close(3 [pid 4994] <... openat resumed>) = 3 [pid 7312] <... close resumed>) = 0 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 7312] symlink("/dev/binderfs", "./binderfs" [pid 7310] munmap(0x7f46b9f9b000, 2097152 [pid 7312] <... symlink resumed>) = 0 [pid 7310] <... munmap resumed>) = 0 [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7312] memfd_create("syzkaller", 0 [pid 4994] close(3 [pid 7312] <... memfd_create resumed>) = 3 [pid 7312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7310] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... close resumed>) = 0 [pid 7312] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7310] <... openat resumed>) = 4 [pid 7304] <... pwritev2 resumed>) = 65007 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7310] ioctl(4, LOOP_SET_FD, 3 [pid 7304] exit_group(0 [pid 7310] <... ioctl resumed>) = 0 [pid 7304] <... exit_group resumed>) = ? [pid 7310] close(3) = 0 [pid 7310] mkdir("./file0", 0777 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7313 ./strace-static-x86_64: Process 7313 attached [pid 7304] +++ exited with 0 +++ [pid 7313] chdir("./192" [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7304, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 7313] <... chdir resumed>) = 0 [pid 7313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7313] setpgid(0, 0 [pid 4993] umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7313] <... setpgid resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7313] <... openat resumed>) = 3 [pid 7313] write(3, "1000", 4 [pid 4993] <... openat resumed>) = 3 [pid 7313] <... write resumed>) = 4 [pid 4993] fstat(3, [pid 7313] close(3) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7313] symlink("/dev/binderfs", "./binderfs" [pid 4993] getdents64(3, [pid 7313] <... symlink resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7313] memfd_create("syzkaller", 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7313] <... memfd_create resumed>) = 3 [pid 4993] lstat("./192/binderfs", [pid 7313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7313] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] unlink("./192/binderfs" [pid 7310] <... mkdir resumed>) = 0 [pid 7310] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... unlink resumed>) = 0 [pid 4993] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7307] <... mount resumed>) = 0 [ 195.885018][ T7310] loop4: detected capacity change from 0 to 4096 [ 195.903592][ T7307] NILFS (loop5): recovery complete [pid 7307] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7307] chdir("./file0") = 0 [pid 7307] ioctl(4, LOOP_CLR_FD) = 0 [pid 7307] close(4) = 0 [pid 7307] creat("./bus", 000 [pid 7313] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./192/file0", [pid 7307] <... creat resumed>) = 4 [pid 7307] unlink("./bus" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7307] <... unlink resumed>) = 0 [pid 7307] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 7312] <... write resumed>) = 2097152 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./192/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [ 195.934540][ T7314] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 195.955187][ T7310] NILFS (loop4): invalid segment: Checksum error in segment payload [ 195.976771][ T7310] NILFS (loop4): trying rollback from an earlier position [pid 4993] close(3) = 0 [pid 4993] rmdir("./192") = 0 [pid 4993] mkdir("./193", 0777 [pid 7313] <... write resumed>) = 2097152 [pid 7312] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... mkdir resumed>) = 0 [pid 7313] munmap(0x7f46b9f9b000, 2097152 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 7313] <... munmap resumed>) = 0 [pid 7312] <... munmap resumed>) = 0 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7313] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] close(3) = 0 [pid 7307] <... pwritev2 resumed>) = 65007 [pid 7307] exit_group(0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7307] <... exit_group resumed>) = ? [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7315 [pid 7312] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7312] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 7315 attached [pid 7313] <... openat resumed>) = 4 [pid 7312] <... ioctl resumed>) = 0 [pid 7307] +++ exited with 0 +++ [pid 7315] chdir("./193" [pid 7313] ioctl(4, LOOP_SET_FD, 3 [pid 7312] close(3 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7307, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 7315] <... chdir resumed>) = 0 [pid 7315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7315] setpgid(0, 0) = 0 [pid 7315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7315] write(3, "1000", 4) = 4 [pid 7315] close(3) = 0 [pid 7315] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7315] memfd_create("syzkaller", 0) = 3 [pid 7315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7313] <... ioctl resumed>) = 0 [pid 7312] <... close resumed>) = 0 [pid 7312] mkdir("./file0", 0777 [pid 7313] close(3 [pid 7312] <... mkdir resumed>) = 0 [pid 4998] umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7313] <... close resumed>) = 0 [pid 7312] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7313] mkdir("./file0", 0777 [pid 4998] openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7313] <... mkdir resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 7313] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./192/binderfs") = 0 [ 196.035782][ T7312] loop3: detected capacity change from 0 to 4096 [ 196.046841][ T7313] loop1: detected capacity change from 0 to 4096 [ 196.054695][ T7310] NILFS (loop4): recovery complete [ 196.066764][ T7316] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7310] <... mount resumed>) = 0 [pid 7310] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7310] chdir("./file0") = 0 [pid 7310] ioctl(4, LOOP_CLR_FD) = 0 [pid 7310] close(4) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 7310] creat("./bus", 000 [ 196.078895][ T7312] NILFS (loop3): invalid segment: Checksum error in segment payload [ 196.087131][ T7313] NILFS (loop1): invalid segment: Checksum error in segment payload [ 196.089076][ T7312] NILFS (loop3): trying rollback from an earlier position [ 196.111443][ T7313] NILFS (loop1): trying rollback from an earlier position [pid 4998] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7315] <... write resumed>) = 2097152 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7315] munmap(0x7f46b9f9b000, 2097152 [pid 7310] <... creat resumed>) = 4 [pid 4998] lstat("./192/file0", [pid 7310] unlink("./bus" [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7315] <... munmap resumed>) = 0 [pid 7310] <... unlink resumed>) = 0 [pid 4998] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7315] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7310] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7315] <... openat resumed>) = 4 [pid 4998] openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7315] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... openat resumed>) = 4 [pid 7315] <... ioctl resumed>) = 0 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./192/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./192") = 0 [pid 4998] mkdir("./193", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3 [pid 7315] close(3 [pid 7310] <... pwritev2 resumed>) = 65007 [pid 7315] <... close resumed>) = 0 [ 196.144859][ T7312] NILFS (loop3): recovery complete [ 196.161142][ T7313] NILFS (loop1): recovery complete [ 196.167460][ T7315] loop0: detected capacity change from 0 to 4096 [pid 7310] exit_group(0 [pid 4998] <... close resumed>) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7319 ./strace-static-x86_64: Process 7319 attached [pid 7319] chdir("./193") = 0 [pid 7319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7319] setpgid(0, 0) = 0 [pid 7319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7312] <... mount resumed>) = 0 [pid 7312] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7319] <... openat resumed>) = 3 [pid 7315] mkdir("./file0", 0777 [pid 7313] <... mount resumed>) = 0 [pid 7310] <... exit_group resumed>) = ? [pid 7315] <... mkdir resumed>) = 0 [pid 7313] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7312] chdir("./file0" [pid 7319] write(3, "1000", 4 [pid 7315] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7313] <... openat resumed>) = 3 [pid 7312] <... chdir resumed>) = 0 [pid 7310] +++ exited with 0 +++ [pid 7319] <... write resumed>) = 4 [pid 7312] ioctl(4, LOOP_CLR_FD [pid 7319] close(3 [pid 7312] <... ioctl resumed>) = 0 [pid 7319] <... close resumed>) = 0 [pid 7312] close(4 [pid 7319] symlink("/dev/binderfs", "./binderfs" [pid 7313] chdir("./file0" [pid 7312] <... close resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7310, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 7313] <... chdir resumed>) = 0 [pid 7312] creat("./bus", 000 [pid 4997] restart_syscall(<... resuming interrupted clone ...> [pid 7319] <... symlink resumed>) = 0 [pid 7313] ioctl(4, LOOP_CLR_FD [pid 4997] <... restart_syscall resumed>) = 0 [pid 7313] <... ioctl resumed>) = 0 [pid 7313] close(4) = 0 [pid 4997] umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7313] creat("./bus", 000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7319] memfd_create("syzkaller", 0 [pid 7312] <... creat resumed>) = 4 [pid 4997] openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7319] <... memfd_create resumed>) = 3 [pid 7312] unlink("./bus" [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./192/binderfs") = 0 [pid 4997] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7313] <... creat resumed>) = 4 [pid 7312] <... unlink resumed>) = 0 [pid 7319] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7313] unlink("./bus" [pid 7312] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7313] <... unlink resumed>) = 0 [pid 7313] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [ 196.185848][ T7317] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.200121][ T7318] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.224642][ T7315] NILFS (loop0): invalid segment: Checksum error in segment payload [ 196.233174][ T7315] NILFS (loop0): trying rollback from an earlier position [pid 7319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7312] <... pwritev2 resumed>) = 65007 [pid 7312] exit_group(0) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 4997] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7312] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7312, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=4 /* 0.04 s */} --- [pid 7313] <... pwritev2 resumed>) = 65007 [pid 7313] exit_group(0 [pid 4996] umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7313] <... exit_group resumed>) = ? [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./192/file0", [pid 4996] openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4997] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4997] openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] unlink("./192/binderfs" [pid 4997] <... openat resumed>) = 4 [pid 4996] <... unlink resumed>) = 0 [pid 4997] fstat(4, [pid 4996] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 7315] <... mount resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7315] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4997] getdents64(4, [pid 7315] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [ 196.325074][ T7315] NILFS (loop0): recovery complete [pid 7313] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7313, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] close(4 [pid 7315] chdir("./file0" [pid 4994] lstat("./192/binderfs", [pid 4997] <... close resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7315] <... chdir resumed>) = 0 [pid 4997] rmdir("./192/file0" [pid 4994] unlink("./192/binderfs" [pid 7315] ioctl(4, LOOP_CLR_FD [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... unlink resumed>) = 0 [pid 7319] <... write resumed>) = 2097152 [pid 7315] <... ioctl resumed>) = 0 [pid 4997] getdents64(3, [pid 4994] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7319] munmap(0x7f46b9f9b000, 2097152 [pid 7315] close(4 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7319] <... munmap resumed>) = 0 [pid 7315] <... close resumed>) = 0 [pid 4997] close(3 [pid 7319] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7315] creat("./bus", 000 [pid 4997] <... close resumed>) = 0 [pid 7319] <... openat resumed>) = 4 [pid 7315] <... creat resumed>) = 4 [pid 4997] rmdir("./192" [pid 7319] ioctl(4, LOOP_SET_FD, 3 [pid 7315] unlink("./bus" [pid 4997] <... rmdir resumed>) = 0 [pid 7319] <... ioctl resumed>) = 0 [pid 7315] <... unlink resumed>) = 0 [pid 4997] mkdir("./193", 0777 [pid 7315] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7321 ./strace-static-x86_64: Process 7321 attached [pid 7321] chdir("./193" [pid 7319] close(3) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 7319] mkdir("./file0", 0777 [pid 7321] <... chdir resumed>) = 0 [pid 7321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7321] setpgid(0, 0 [pid 4996] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7321] <... setpgid resumed>) = 0 [pid 7315] <... pwritev2 resumed>) = 65007 [pid 7321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7319] <... mkdir resumed>) = 0 [pid 7315] exit_group(0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7321] <... openat resumed>) = 3 [pid 7319] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7315] <... exit_group resumed>) = ? [pid 7321] write(3, "1000", 4 [pid 4996] lstat("./192/file0", [pid 7321] <... write resumed>) = 4 [pid 7321] close(3) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7321] symlink("/dev/binderfs", "./binderfs" [pid 4996] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 196.352217][ T7320] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.374732][ T7319] loop5: detected capacity change from 0 to 4096 [pid 4996] getdents64(4, [pid 7315] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7315, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4993] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = 0 [pid 4996] getdents64(4, [pid 7321] <... symlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 4993] umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] rmdir("./192/file0" [pid 4993] openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7321] memfd_create("syzkaller", 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 4993] fstat(3, [pid 7321] <... memfd_create resumed>) = 3 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] close(3 [pid 7321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] getdents64(3, [pid 4996] <... close resumed>) = 0 [pid 7321] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] rmdir("./192" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] mkdir("./193", 0777 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... mkdir resumed>) = 0 [pid 4993] lstat("./193/binderfs", [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] lstat("./192/file0", [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./193/binderfs" [pid 4996] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] close(3 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... close resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... openat resumed>) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7322 [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 7322 attached [pid 7322] chdir("./193") = 0 [pid 7322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7322] setpgid(0, 0) = 0 [pid 7322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7322] write(3, "1000", 4) = 4 [pid 7322] close(3) = 0 [pid 7322] symlink("/dev/binderfs", "./binderfs" [pid 7321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7322] <... symlink resumed>) = 0 [pid 7322] memfd_create("syzkaller", 0) = 3 [pid 7322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./192/file0") = 0 [ 196.428088][ T7319] NILFS (loop5): invalid segment: Checksum error in segment payload [ 196.437041][ T7319] NILFS (loop5): trying rollback from an earlier position [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./192") = 0 [pid 4994] mkdir("./193", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7323 ./strace-static-x86_64: Process 7323 attached [pid 7323] chdir("./193") = 0 [pid 7323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7323] setpgid(0, 0) = 0 [pid 7323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7323] write(3, "1000", 4) = 4 [pid 4993] <... umount2 resumed>) = 0 [pid 4993] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7323] close(3) = 0 [pid 4993] lstat("./193/file0", [pid 7323] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7323] <... symlink resumed>) = 0 [pid 4993] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7323] memfd_create("syzkaller", 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7323] <... memfd_create resumed>) = 3 [pid 4993] getdents64(4, [pid 7323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] close(4 [pid 7323] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./193/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./193") = 0 [pid 4993] mkdir("./194", 0777) = 0 [pid 7321] <... write resumed>) = 2097152 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7325 ./strace-static-x86_64: Process 7325 attached [pid 7325] chdir("./194") = 0 [ 196.523210][ T7319] NILFS (loop5): recovery complete [pid 7321] munmap(0x7f46b9f9b000, 2097152 [pid 7325] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7321] <... munmap resumed>) = 0 [pid 7319] <... mount resumed>) = 0 [pid 7325] <... prctl resumed>) = 0 [pid 7319] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7325] setpgid(0, 0 [pid 7319] <... openat resumed>) = 3 [pid 7325] <... setpgid resumed>) = 0 [pid 7321] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7319] chdir("./file0" [pid 7325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7321] <... openat resumed>) = 4 [pid 7319] <... chdir resumed>) = 0 [pid 7325] <... openat resumed>) = 3 [pid 7321] ioctl(4, LOOP_SET_FD, 3 [pid 7319] ioctl(4, LOOP_CLR_FD [pid 7325] write(3, "1000", 4 [pid 7323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7322] <... write resumed>) = 2097152 [pid 7319] <... ioctl resumed>) = 0 [pid 7321] <... ioctl resumed>) = 0 [pid 7325] <... write resumed>) = 4 [pid 7319] close(4 [pid 7325] close(3 [pid 7321] close(3 [pid 7319] <... close resumed>) = 0 [pid 7325] <... close resumed>) = 0 [pid 7321] <... close resumed>) = 0 [pid 7319] creat("./bus", 000 [pid 7325] symlink("/dev/binderfs", "./binderfs" [pid 7321] mkdir("./file0", 0777 [pid 7325] <... symlink resumed>) = 0 [pid 7321] <... mkdir resumed>) = 0 [pid 7325] memfd_create("syzkaller", 0 [pid 7321] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7325] <... memfd_create resumed>) = 3 [pid 7325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7319] <... creat resumed>) = 4 [pid 7319] unlink("./bus") = 0 [pid 7322] munmap(0x7f46b9f9b000, 2097152 [ 196.565616][ T7324] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.576808][ T7321] loop4: detected capacity change from 0 to 4096 [pid 7319] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7323] <... write resumed>) = 2097152 [pid 7322] <... munmap resumed>) = 0 [pid 7323] munmap(0x7f46b9f9b000, 2097152 [pid 7322] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7323] <... munmap resumed>) = 0 [pid 7322] ioctl(4, LOOP_SET_FD, 3 [pid 7323] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7322] <... ioctl resumed>) = 0 [pid 7319] <... pwritev2 resumed>) = 65007 [pid 7323] <... openat resumed>) = 4 [pid 7323] ioctl(4, LOOP_SET_FD, 3 [pid 7319] exit_group(0) = ? [pid 7322] close(3) = 0 [pid 7322] mkdir("./file0", 0777) = 0 [pid 7322] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7319] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7319, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 7323] <... ioctl resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 7323] close(3 [pid 4998] umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7323] <... close resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7323] mkdir("./file0", 0777 [pid 4998] openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7323] <... mkdir resumed>) = 0 [pid 4998] getdents64(3, [pid 7323] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 196.637742][ T7321] NILFS (loop4): invalid segment: Checksum error in segment payload [ 196.645208][ T7322] loop3: detected capacity change from 0 to 4096 [ 196.646191][ T7321] NILFS (loop4): trying rollback from an earlier position [ 196.655454][ T7323] loop1: detected capacity change from 0 to 4096 [ 196.676913][ T7321] NILFS (loop4): recovery complete [pid 7321] <... mount resumed>) = 0 [pid 4998] unlink("./193/binderfs" [pid 7325] <... write resumed>) = 2097152 [pid 7325] munmap(0x7f46b9f9b000, 2097152 [pid 7321] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] <... unlink resumed>) = 0 [pid 7321] <... openat resumed>) = 3 [pid 4998] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7321] chdir("./file0") = 0 [pid 7321] ioctl(4, LOOP_CLR_FD) = 0 [pid 7321] close(4) = 0 [ 196.691309][ T7326] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.696725][ T7322] NILFS (loop3): invalid segment: Checksum error in segment payload [ 196.715629][ T7322] NILFS (loop3): trying rollback from an earlier position [ 196.726265][ T7323] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7321] creat("./bus", 000 [pid 7325] <... munmap resumed>) = 0 [pid 7325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7325] ioctl(4, LOOP_SET_FD, 3 [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./193/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 196.738833][ T7323] NILFS (loop1): trying rollback from an earlier position [ 196.756526][ T7322] NILFS (loop3): recovery complete [ 196.757972][ T7325] loop0: detected capacity change from 0 to 4096 [ 196.771286][ T7327] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] getdents64(4, [pid 7325] <... ioctl resumed>) = 0 [pid 7323] <... mount resumed>) = 0 [pid 7322] <... mount resumed>) = 0 [pid 7321] <... creat resumed>) = 4 [pid 7325] close(3 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7325] <... close resumed>) = 0 [pid 4998] getdents64(4, [pid 7325] mkdir("./file0", 0777 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7325] <... mkdir resumed>) = 0 [pid 4998] close(4 [pid 7325] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... close resumed>) = 0 [pid 4998] rmdir("./193/file0" [pid 7323] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7322] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7321] unlink("./bus" [pid 4998] <... rmdir resumed>) = 0 [pid 7322] <... openat resumed>) = 3 [pid 7322] chdir("./file0" [pid 7321] <... unlink resumed>) = 0 [pid 4998] getdents64(3, [pid 7322] <... chdir resumed>) = 0 [pid 7321] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7322] ioctl(4, LOOP_CLR_FD) = 0 [pid 7322] close(4 [pid 7323] <... openat resumed>) = 3 [pid 7322] <... close resumed>) = 0 [pid 4998] close(3 [pid 7323] chdir("./file0" [pid 7322] creat("./bus", 000 [pid 4998] <... close resumed>) = 0 [pid 7323] <... chdir resumed>) = 0 [pid 4998] rmdir("./193" [pid 7323] ioctl(4, LOOP_CLR_FD [pid 7322] <... creat resumed>) = 4 [pid 7323] <... ioctl resumed>) = 0 [pid 7322] unlink("./bus" [pid 4998] <... rmdir resumed>) = 0 [pid 7323] close(4 [pid 7322] <... unlink resumed>) = 0 [pid 4998] mkdir("./194", 0777 [pid 7323] <... close resumed>) = 0 [pid 7322] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... mkdir resumed>) = 0 [pid 7323] creat("./bus", 000 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7323] <... creat resumed>) = 4 [pid 7323] unlink("./bus" [pid 4998] close(3 [pid 7323] <... unlink resumed>) = 0 [pid 7321] <... pwritev2 resumed>) = 65007 [pid 7323] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7321] exit_group(0 [pid 4998] <... close resumed>) = 0 [pid 7321] <... exit_group resumed>) = ? [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7329 ./strace-static-x86_64: Process 7329 attached [pid 7329] chdir("./194") = 0 [pid 7329] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7321] +++ exited with 0 +++ [pid 7329] <... prctl resumed>) = 0 [ 196.787990][ T7323] NILFS (loop1): recovery complete [ 196.794029][ T7328] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 196.809537][ T7325] NILFS (loop0): invalid segment: Checksum error in segment payload [ 196.818585][ T7325] NILFS (loop0): trying rollback from an earlier position [pid 7329] setpgid(0, 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7321, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=4 /* 0.04 s */} --- [pid 4997] umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./193/binderfs") = 0 [pid 7329] <... setpgid resumed>) = 0 [pid 7323] <... pwritev2 resumed>) = 65007 [pid 7322] <... pwritev2 resumed>) = 65007 [pid 4997] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7323] exit_group(0 [ 196.883894][ T7325] NILFS (loop0): recovery complete [pid 7322] exit_group(0 [pid 7329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7325] <... mount resumed>) = 0 [pid 7323] <... exit_group resumed>) = ? [pid 7322] <... exit_group resumed>) = ? [pid 7329] <... openat resumed>) = 3 [pid 7325] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7329] write(3, "1000", 4 [pid 7325] <... openat resumed>) = 3 [pid 7329] <... write resumed>) = 4 [pid 7325] chdir("./file0" [pid 7329] close(3 [pid 7325] <... chdir resumed>) = 0 [pid 7329] <... close resumed>) = 0 [pid 7325] ioctl(4, LOOP_CLR_FD [pid 7329] symlink("/dev/binderfs", "./binderfs" [pid 7325] <... ioctl resumed>) = 0 [pid 7329] <... symlink resumed>) = 0 [pid 7325] close(4 [pid 7329] memfd_create("syzkaller", 0 [pid 7325] <... close resumed>) = 0 [pid 7323] +++ exited with 0 +++ [pid 7322] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = 0 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7322, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=2 /* 0.02 s */} --- [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7323, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 4994] umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... restart_syscall resumed>) = 0 [pid 4994] openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7329] <... memfd_create resumed>) = 3 [pid 7325] creat("./bus", 000 [pid 4994] <... openat resumed>) = 3 [pid 4994] fstat(3, [pid 4996] umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4997] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] getdents64(3, [pid 7329] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] lstat("./193/file0", [pid 4996] <... openat resumed>) = 3 [pid 4994] umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] fstat(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./193/binderfs", [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] unlink("./193/binderfs" [pid 4997] <... openat resumed>) = 4 [pid 4996] umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... unlink resumed>) = 0 [pid 4997] fstat(4, [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] lstat("./193/binderfs", [pid 4997] getdents64(4, [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] unlink("./193/binderfs" [pid 4997] getdents64(4, [pid 4996] <... unlink resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(4) = 0 [pid 4997] rmdir("./193/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./193") = 0 [pid 4997] mkdir("./194", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7331 ./strace-static-x86_64: Process 7331 attached [pid 7331] chdir("./194") = 0 [pid 7331] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7325] <... creat resumed>) = 4 [pid 7331] <... prctl resumed>) = 0 [pid 7325] unlink("./bus" [pid 7331] setpgid(0, 0) = 0 [ 196.907802][ T7330] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7325] <... unlink resumed>) = 0 [pid 7325] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7331] <... openat resumed>) = 3 [pid 7331] write(3, "1000", 4) = 4 [pid 7331] close(3) = 0 [pid 7331] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7331] memfd_create("syzkaller", 0) = 3 [pid 7331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7325] <... pwritev2 resumed>) = 65007 [pid 7325] exit_group(0) = ? [pid 7329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7325] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7325, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4993] umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... umount2 resumed>) = 0 [pid 4993] umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./194/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./194/binderfs") = 0 [pid 4993] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./193/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] fstat(4, [pid 4994] lstat("./193/file0", [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(4, [pid 4994] umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(4, [pid 4994] openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] <... openat resumed>) = 4 [pid 4996] close(4) = 0 [pid 4994] fstat(4, [pid 4996] rmdir("./193/file0") = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 4994] getdents64(4, [pid 4993] <... umount2 resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] close(3 [pid 4994] getdents64(4, [pid 4996] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] rmdir("./193" [pid 4994] close(4 [pid 4996] <... rmdir resumed>) = 0 [pid 4994] <... close resumed>) = 0 [pid 4996] mkdir("./194", 0777 [pid 4994] rmdir("./193/file0" [pid 4996] <... mkdir resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] getdents64(3, [pid 4996] <... openat resumed>) = 3 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4994] close(3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... close resumed>) = 0 [pid 4996] close(3 [pid 4994] rmdir("./193" [pid 4996] <... close resumed>) = 0 [pid 4994] <... rmdir resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] mkdir("./194", 0777) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7332 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7333 [pid 4993] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./194/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4993] fstat(4, ./strace-static-x86_64: Process 7332 attached {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7332] chdir("./194") = 0 [pid 4993] getdents64(4, [pid 7332] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 7333 attached ) = 0 [pid 7329] <... write resumed>) = 2097152 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7332] setpgid(0, 0) = 0 [pid 4993] getdents64(4, [pid 7333] chdir("./194") = 0 [pid 7332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7329] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7332] <... openat resumed>) = 3 [pid 4993] close(4 [pid 7332] write(3, "1000", 4 [pid 4993] <... close resumed>) = 0 [pid 7332] <... write resumed>) = 4 [pid 4993] rmdir("./194/file0" [pid 7333] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7332] close(3 [pid 7329] <... munmap resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7332] <... close resumed>) = 0 [pid 4993] getdents64(3, [pid 7332] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7333] <... prctl resumed>) = 0 [pid 7332] <... symlink resumed>) = 0 [pid 7329] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4993] close(3 [pid 7333] setpgid(0, 0 [pid 7332] memfd_create("syzkaller", 0 [pid 7331] <... write resumed>) = 2097152 [pid 7329] <... openat resumed>) = 4 [pid 4993] <... close resumed>) = 0 [pid 7333] <... setpgid resumed>) = 0 [pid 7332] <... memfd_create resumed>) = 3 [pid 7329] ioctl(4, LOOP_SET_FD, 3 [pid 4993] rmdir("./194" [pid 7333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7332] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] mkdir("./195", 0777 [pid 7333] <... openat resumed>) = 3 [pid 7331] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... mkdir resumed>) = 0 [pid 7333] write(3, "1000", 4 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7333] <... write resumed>) = 4 [pid 4993] <... openat resumed>) = 3 [pid 7333] close(3 [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7333] <... close resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7333] symlink("/dev/binderfs", "./binderfs" [pid 4993] close(3 [pid 7333] <... symlink resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7333] memfd_create("syzkaller", 0 [pid 7331] <... munmap resumed>) = 0 [pid 7333] <... memfd_create resumed>) = 3 [pid 7331] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7329] <... ioctl resumed>) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7334 [pid 7333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7331] <... openat resumed>) = 4 [pid 7329] close(3 [pid 7333] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7329] <... close resumed>) = 0 ./strace-static-x86_64: Process 7334 attached [pid 7331] ioctl(4, LOOP_SET_FD, 3 [pid 7329] mkdir("./file0", 0777 [pid 7334] chdir("./195") = 0 [pid 7332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7334] setpgid(0, 0) = 0 [pid 7334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7334] write(3, "1000", 4) = 4 [pid 7334] close(3) = 0 [pid 7334] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7334] memfd_create("syzkaller", 0) = 3 [pid 7334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7331] <... ioctl resumed>) = 0 [pid 7329] <... mkdir resumed>) = 0 [pid 7331] close(3 [pid 7329] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7331] <... close resumed>) = 0 [pid 7331] mkdir("./file0", 0777) = 0 [ 197.122183][ T7329] loop5: detected capacity change from 0 to 4096 [ 197.154636][ T7331] loop4: detected capacity change from 0 to 4096 [pid 7331] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7333] <... write resumed>) = 2097152 [pid 7333] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7333] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 7332] <... write resumed>) = 2097152 [ 197.184179][ T7329] NILFS (loop5): invalid segment: Checksum error in segment payload [ 197.202914][ T7331] NILFS (loop4): invalid segment: Checksum error in segment payload [ 197.211025][ T7329] NILFS (loop5): trying rollback from an earlier position [ 197.218755][ T7331] NILFS (loop4): trying rollback from an earlier position [pid 7333] ioctl(4, LOOP_SET_FD, 3 [pid 7332] munmap(0x7f46b9f9b000, 2097152 [pid 7334] <... write resumed>) = 2097152 [pid 7332] <... munmap resumed>) = 0 [pid 7332] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7332] ioctl(4, LOOP_SET_FD, 3 [pid 7334] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7334] ioctl(4, LOOP_SET_FD, 3 [pid 7332] <... ioctl resumed>) = 0 [pid 7332] close(3) = 0 [pid 7332] mkdir("./file0", 0777) = 0 [pid 7332] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7334] <... ioctl resumed>) = 0 [pid 7334] close(3) = 0 [pid 7334] mkdir("./file0", 0777 [pid 7333] <... ioctl resumed>) = 0 [pid 7333] close(3) = 0 [pid 7333] mkdir("./file0", 0777) = 0 [ 197.244081][ T7333] loop1: detected capacity change from 0 to 4096 [ 197.253115][ T7332] loop3: detected capacity change from 0 to 4096 [ 197.257738][ T7329] NILFS (loop5): recovery complete [ 197.268701][ T7334] loop0: detected capacity change from 0 to 4096 [ 197.271309][ T7331] NILFS (loop4): recovery complete [pid 7333] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7329] <... mount resumed>) = 0 [pid 7334] <... mkdir resumed>) = 0 [pid 7334] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7329] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7329] chdir("./file0") = 0 [pid 7329] ioctl(4, LOOP_CLR_FD) = 0 [pid 7329] close(4) = 0 [ 197.285788][ T7335] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.295136][ T7332] NILFS (loop3): invalid segment: Checksum error in segment payload [ 197.308718][ T7336] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.317293][ T7332] NILFS (loop3): trying rollback from an earlier position [ 197.326734][ T7333] NILFS (loop1): invalid segment: Checksum error in segment payload [ 197.335115][ T7334] NILFS (loop0): invalid segment: Checksum error in segment payload [pid 7329] creat("./bus", 000 [pid 7331] <... mount resumed>) = 0 [pid 7331] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7331] chdir("./file0") = 0 [pid 7331] ioctl(4, LOOP_CLR_FD) = 0 [pid 7331] close(4) = 0 [pid 7331] creat("./bus", 000 [pid 7329] <... creat resumed>) = 4 [pid 7329] unlink("./bus") = 0 [pid 7329] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7331] <... creat resumed>) = 4 [pid 7331] unlink("./bus") = 0 [ 197.343133][ T7334] NILFS (loop0): trying rollback from an earlier position [ 197.351818][ T7333] NILFS (loop1): trying rollback from an earlier position [ 197.380137][ T7332] NILFS (loop3): recovery complete [pid 7331] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7329] <... pwritev2 resumed>) = 65007 [pid 7329] exit_group(0 [pid 7331] <... pwritev2 resumed>) = 65007 [pid 7331] exit_group(0) = ? [pid 7329] <... exit_group resumed>) = ? [pid 7333] <... mount resumed>) = 0 [pid 7332] <... mount resumed>) = 0 [pid 7331] +++ exited with 0 +++ [pid 7329] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7329, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7331, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4997] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 4997] fstat(3, [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, [pid 4997] getdents64(3, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./194/binderfs", [pid 4997] lstat("./194/binderfs", [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./194/binderfs" [pid 4997] unlink("./194/binderfs" [pid 4998] <... unlink resumed>) = 0 [pid 4997] <... unlink resumed>) = 0 [pid 4998] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7333] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7332] chdir("./file0") = 0 [pid 7332] ioctl(4, LOOP_CLR_FD) = 0 [pid 7332] close(4) = 0 [ 197.397312][ T7333] NILFS (loop1): recovery complete [ 197.403095][ T7334] NILFS (loop0): recovery complete [ 197.414684][ T7337] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.423239][ T7338] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7332] creat("./bus", 000 [pid 7334] <... mount resumed>) = 0 [pid 7333] <... openat resumed>) = 3 [pid 7333] chdir("./file0" [pid 7334] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7333] <... chdir resumed>) = 0 [pid 7334] <... openat resumed>) = 3 [pid 7332] <... creat resumed>) = 4 [pid 7334] chdir("./file0" [pid 7332] unlink("./bus" [pid 7334] <... chdir resumed>) = 0 [pid 7334] ioctl(4, LOOP_CLR_FD) = 0 [pid 7333] ioctl(4, LOOP_CLR_FD [pid 7334] close(4 [pid 7333] <... ioctl resumed>) = 0 [pid 7332] <... unlink resumed>) = 0 [pid 7334] <... close resumed>) = 0 [pid 7333] close(4 [pid 7332] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7334] creat("./bus", 000 [pid 7333] <... close resumed>) = 0 [pid 7333] creat("./bus", 000 [pid 7334] <... creat resumed>) = 4 [pid 7334] unlink("./bus" [pid 7333] <... creat resumed>) = 4 [pid 7333] unlink("./bus" [pid 7334] <... unlink resumed>) = 0 [pid 7334] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7333] <... unlink resumed>) = 0 [ 197.439213][ T7339] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7333] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7332] <... pwritev2 resumed>) = 65007 [pid 7332] exit_group(0) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 7334] <... pwritev2 resumed>) = 65007 [pid 7334] exit_group(0) = ? [pid 7333] <... pwritev2 resumed>) = 65007 [pid 7333] exit_group(0) = ? [pid 4997] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7332] +++ exited with 0 +++ [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7334] +++ exited with 0 +++ [pid 4997] lstat("./194/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7334, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 4997] openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7332, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4993] umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 3 [pid 4993] fstat(3, [pid 4996] fstat(3, [pid 4997] close(4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] getdents64(3, [pid 4998] <... umount2 resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] rmdir("./194/file0" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7333] +++ exited with 0 +++ [pid 4997] <... rmdir resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] getdents64(3, [pid 4998] lstat("./194/file0", [pid 4997] getdents64(3, [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] close(3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... close resumed>) = 0 [pid 4998] openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] rmdir("./194" [pid 4998] <... openat resumed>) = 4 [pid 4997] <... rmdir resumed>) = 0 [pid 4996] umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] fstat(4, [pid 4997] mkdir("./195", 0777 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... mkdir resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7333, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} --- [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] getdents64(4, [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] <... openat resumed>) = 3 [pid 4998] getdents64(4, [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4996] lstat("./194/binderfs", [pid 4994] umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] unlink("./194/binderfs" [pid 4994] openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] lstat("./195/binderfs", [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(4 [pid 4996] <... unlink resumed>) = 0 [pid 4998] <... close resumed>) = 0 [pid 4997] close(3 [pid 4994] <... openat resumed>) = 3 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] rmdir("./194/file0") = 0 [pid 4997] <... close resumed>) = 0 [pid 4996] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] fstat(3, [pid 4993] unlink("./195/binderfs" [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./194" [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7340 [pid 4994] getdents64(3, [pid 4998] <... rmdir resumed>) = 0 [pid 4998] mkdir("./195", 0777 [pid 4993] <... unlink resumed>) = 0 [pid 4998] <... mkdir resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4994] umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4994] lstat("./194/binderfs", [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7341 [pid 4994] unlink("./194/binderfs") = 0 ./strace-static-x86_64: Process 7341 attached [pid 7341] chdir("./195") = 0 [pid 7341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7341] setpgid(0, 0) = 0 [pid 7341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7341] write(3, "1000", 4) = 4 [pid 7341] close(3) = 0 [pid 7341] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7341] memfd_create("syzkaller", 0) = 3 [pid 7341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 ./strace-static-x86_64: Process 7340 attached [pid 4996] <... umount2 resumed>) = 0 [pid 4994] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7340] chdir("./195" [pid 4996] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7340] <... chdir resumed>) = 0 [pid 7341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7340] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4996] lstat("./194/file0", [pid 7340] <... prctl resumed>) = 0 [pid 7340] setpgid(0, 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7340] <... setpgid resumed>) = 0 [pid 4996] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = 0 [pid 7340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7340] <... openat resumed>) = 3 [pid 4996] <... openat resumed>) = 4 [pid 7340] write(3, "1000", 4 [pid 4996] fstat(4, [pid 7340] <... write resumed>) = 4 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7340] close(3) = 0 [pid 4996] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7340] symlink("/dev/binderfs", "./binderfs" [pid 4996] getdents64(4, [pid 7340] <... symlink resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4996] close(4 [pid 7340] memfd_create("syzkaller", 0 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./194/file0" [pid 7340] <... memfd_create resumed>) = 3 [pid 7340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, [pid 7340] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 4996] rmdir("./194") = 0 [pid 4996] mkdir("./195", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4993] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 4993] lstat("./195/file0", [pid 7340] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4996] <... close resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7341] <... write resumed>) = 2097152 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7341] munmap(0x7f46b9f9b000, 2097152 [pid 4993] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7342 [pid 4994] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7341] <... munmap resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7341] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 4994] lstat("./194/file0", [pid 4993] <... openat resumed>) = 4 [pid 7341] ioctl(4, LOOP_SET_FD, 3 [pid 4993] fstat(4, [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(4, [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, [pid 4993] getdents64(4, [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... close resumed>) = 0 [pid 4993] getdents64(4, ./strace-static-x86_64: Process 7342 attached [pid 4994] rmdir("./194/file0" [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7342] chdir("./195" [pid 4994] <... rmdir resumed>) = 0 [pid 4993] close(4 [pid 7341] <... ioctl resumed>) = 0 [pid 7342] <... chdir resumed>) = 0 [pid 7341] close(3 [pid 7340] <... write resumed>) = 2097152 [pid 4994] getdents64(3, [pid 4993] <... close resumed>) = 0 [pid 7342] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7341] <... close resumed>) = 0 [pid 7340] munmap(0x7f46b9f9b000, 2097152 [pid 4993] rmdir("./195/file0" [pid 7342] <... prctl resumed>) = 0 [pid 7341] mkdir("./file0", 0777 [pid 7340] <... munmap resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7342] setpgid(0, 0 [pid 7341] <... mkdir resumed>) = 0 [pid 4993] getdents64(3, [pid 7342] <... setpgid resumed>) = 0 [pid 7341] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7340] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] close(3 [pid 4993] close(3 [pid 7342] <... openat resumed>) = 3 [pid 7340] <... openat resumed>) = 4 [pid 4994] <... close resumed>) = 0 [ 197.660380][ T7341] loop5: detected capacity change from 0 to 4096 [ 197.690714][ T7341] NILFS (loop5): invalid segment: Checksum error in segment payload [pid 7340] ioctl(4, LOOP_SET_FD, 3 [pid 4994] rmdir("./194" [pid 7342] write(3, "1000", 4 [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 7342] <... write resumed>) = 4 [pid 4994] mkdir("./195", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7342] close(3 [pid 4993] rmdir("./195" [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7343 ./strace-static-x86_64: Process 7343 attached [pid 7343] chdir("./195") = 0 [pid 7343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7343] setpgid(0, 0) = 0 [pid 7343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7342] <... close resumed>) = 0 [pid 7342] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... rmdir resumed>) = 0 [pid 7342] <... symlink resumed>) = 0 [pid 4993] mkdir("./196", 0777 [pid 7343] <... openat resumed>) = 3 [pid 7342] memfd_create("syzkaller", 0 [pid 7343] write(3, "1000", 4 [pid 7340] <... ioctl resumed>) = 0 [pid 7343] <... write resumed>) = 4 [pid 7340] close(3 [pid 7343] close(3 [pid 7340] <... close resumed>) = 0 [pid 7343] <... close resumed>) = 0 [pid 7340] mkdir("./file0", 0777 [pid 7343] symlink("/dev/binderfs", "./binderfs" [pid 7340] <... mkdir resumed>) = 0 [pid 7343] <... symlink resumed>) = 0 [pid 7342] <... memfd_create resumed>) = 3 [pid 7340] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... mkdir resumed>) = 0 [pid 7343] memfd_create("syzkaller", 0 [pid 7342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7343] <... memfd_create resumed>) = 3 [pid 7342] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] <... openat resumed>) = 3 [pid 7343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 197.705002][ T7341] NILFS (loop5): trying rollback from an earlier position [ 197.707202][ T7340] loop4: detected capacity change from 0 to 4096 [ 197.722144][ T7341] NILFS (loop5): recovery complete [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7341] <... mount resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7341] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7341] chdir("./file0" [pid 4993] close(3 [pid 7341] <... chdir resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7341] ioctl(4, LOOP_CLR_FD) = 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7345 [pid 7341] close(4) = 0 [pid 7341] creat("./bus", 000) = 4 [pid 7341] unlink("./bus") = 0 [pid 7341] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0./strace-static-x86_64: Process 7345 attached [pid 7345] chdir("./196") = 0 [pid 7345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7341] <... pwritev2 resumed>) = 65007 [pid 7341] exit_group(0) = ? [pid 7345] setpgid(0, 0) = 0 [ 197.753018][ T7340] NILFS (loop4): invalid segment: Checksum error in segment payload [ 197.762706][ T7340] NILFS (loop4): trying rollback from an earlier position [ 197.774166][ T7344] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.781083][ T7340] NILFS (loop4): recovery complete [pid 7345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7343] <... write resumed>) = 2097152 [pid 7345] write(3, "1000", 4) = 4 [pid 7345] close(3 [pid 7343] munmap(0x7f46b9f9b000, 2097152 [pid 7345] <... close resumed>) = 0 [pid 7340] <... mount resumed>) = 0 [pid 7345] symlink("/dev/binderfs", "./binderfs" [pid 7343] <... munmap resumed>) = 0 [pid 7340] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7345] <... symlink resumed>) = 0 [pid 7343] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7340] <... openat resumed>) = 3 [pid 7345] memfd_create("syzkaller", 0 [pid 7343] <... openat resumed>) = 4 [pid 7340] chdir("./file0" [pid 7345] <... memfd_create resumed>) = 3 [pid 7343] ioctl(4, LOOP_SET_FD, 3 [pid 7345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7342] <... write resumed>) = 2097152 [pid 7341] +++ exited with 0 +++ [pid 7340] <... chdir resumed>) = 0 [pid 7342] munmap(0x7f46b9f9b000, 2097152 [pid 7340] ioctl(4, LOOP_CLR_FD [pid 7342] <... munmap resumed>) = 0 [pid 7340] <... ioctl resumed>) = 0 [pid 7342] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7340] close(4 [pid 7345] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7343] <... ioctl resumed>) = 0 [pid 7342] <... openat resumed>) = 4 [pid 7340] <... close resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7341, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 7343] close(3 [pid 7342] ioctl(4, LOOP_SET_FD, 3 [pid 7340] creat("./bus", 000 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 7343] <... close resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 7343] mkdir("./file0", 0777) = 0 [pid 7343] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 197.841926][ T7346] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.863329][ T7343] loop1: detected capacity change from 0 to 4096 [pid 4998] openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7342] <... ioctl resumed>) = 0 [pid 7340] <... creat resumed>) = 4 [pid 7342] close(3 [pid 7340] unlink("./bus" [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7342] <... close resumed>) = 0 [pid 7340] <... unlink resumed>) = 0 [pid 7342] mkdir("./file0", 0777 [pid 7340] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7342] <... mkdir resumed>) = 0 [pid 4998] lstat("./195/binderfs", [ 197.887404][ T7342] loop3: detected capacity change from 0 to 4096 [ 197.899221][ T7343] NILFS (loop1): invalid segment: Checksum error in segment payload [ 197.908345][ T7343] NILFS (loop1): trying rollback from an earlier position [pid 7342] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7345] <... write resumed>) = 2097152 [pid 7340] <... pwritev2 resumed>) = 65007 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7345] munmap(0x7f46b9f9b000, 2097152 [pid 7340] exit_group(0 [pid 4998] unlink("./195/binderfs" [pid 7345] <... munmap resumed>) = 0 [pid 7340] <... exit_group resumed>) = ? [pid 4998] <... unlink resumed>) = 0 [pid 7345] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4998] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7345] <... openat resumed>) = 4 [pid 7345] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7345] close(3 [pid 7340] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7340, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4997] umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4997] unlink("./195/binderfs") = 0 [pid 4997] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7345] <... close resumed>) = 0 [ 197.933961][ T7342] NILFS (loop3): invalid segment: Checksum error in segment payload [ 197.943214][ T7343] NILFS (loop1): recovery complete [ 197.952271][ T7345] loop0: detected capacity change from 0 to 4096 [pid 7345] mkdir("./file0", 0777) = 0 [pid 7343] <... mount resumed>) = 0 [pid 7343] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7343] chdir("./file0") = 0 [pid 7343] ioctl(4, LOOP_CLR_FD) = 0 [pid 7343] close(4) = 0 [pid 7345] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 197.977667][ T7347] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 197.985704][ T7342] NILFS (loop3): trying rollback from an earlier position [pid 7343] creat("./bus", 000) = 4 [pid 4998] <... umount2 resumed>) = 0 [pid 7343] unlink("./bus" [pid 4998] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./195/file0", [pid 7343] <... unlink resumed>) = 0 [pid 7343] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7343] <... pwritev2 resumed>) = 65007 [pid 4998] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... umount2 resumed>) = 0 [pid 7343] exit_group(0 [pid 7342] <... mount resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7343] <... exit_group resumed>) = ? [pid 7342] <... openat resumed>) = 3 [pid 4998] openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7342] chdir("./file0") = 0 [pid 7342] ioctl(4, LOOP_CLR_FD) = 0 [pid 7342] close(4) = 0 [pid 7342] creat("./bus", 000 [pid 4998] <... openat resumed>) = 4 [pid 4997] lstat("./195/file0", [pid 7342] <... creat resumed>) = 4 [pid 7342] unlink("./bus") = 0 [pid 7342] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] fstat(4, [pid 4997] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] getdents64(4, [pid 4997] <... openat resumed>) = 4 [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] fstat(4, [pid 4998] close(4 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [ 198.019485][ T7345] NILFS (loop0): invalid segment: Checksum error in segment payload [ 198.036882][ T7342] NILFS (loop3): recovery complete [ 198.050189][ T7348] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 198.058537][ T7345] NILFS (loop0): trying rollback from an earlier position [pid 4998] rmdir("./195/file0" [pid 4997] getdents64(4, [pid 4998] <... rmdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(3, [pid 4997] getdents64(4, [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(3 [pid 4997] close(4 [pid 4998] <... close resumed>) = 0 [pid 4997] <... close resumed>) = 0 [pid 7343] +++ exited with 0 +++ [pid 4998] rmdir("./195" [pid 4997] rmdir("./195/file0" [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7343, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] <... rmdir resumed>) = 0 [pid 4994] restart_syscall(<... resuming interrupted clone ...> [pid 4997] <... rmdir resumed>) = 0 [pid 4994] <... restart_syscall resumed>) = 0 [pid 4998] mkdir("./196", 0777 [pid 4997] getdents64(3, [pid 4994] umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... mkdir resumed>) = 0 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4997] close(3 [pid 4994] openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4994] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] rmdir("./195" [pid 4994] fstat(3, [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] close(3 [pid 4997] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, [pid 4998] <... close resumed>) = 0 [pid 4997] mkdir("./196", 0777 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... mkdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./195/binderfs" [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] <... unlink resumed>) = 0 [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7349 [pid 4997] <... openat resumed>) = 3 [pid 4994] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7342] <... pwritev2 resumed>) = 65007 [pid 7342] exit_group(0) = ? [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7350 ./strace-static-x86_64: Process 7349 attached ./strace-static-x86_64: Process 7350 attached [pid 7349] chdir("./196" [pid 7350] chdir("./196" [pid 7349] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7350] <... chdir resumed>) = 0 [pid 7350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7350] setpgid(0, 0) = 0 [pid 7349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7349] setpgid(0, 0 [pid 7350] <... openat resumed>) = 3 [pid 7349] <... setpgid resumed>) = 0 [pid 7342] +++ exited with 0 +++ [pid 7350] write(3, "1000", 4 [pid 7349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7350] <... write resumed>) = 4 [pid 7349] <... openat resumed>) = 3 [pid 7350] close(3 [pid 7349] write(3, "1000", 4 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7342, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 7350] <... close resumed>) = 0 [pid 7349] <... write resumed>) = 4 [pid 7350] symlink("/dev/binderfs", "./binderfs" [pid 7349] close(3) = 0 [pid 7349] symlink("/dev/binderfs", "./binderfs" [pid 7350] <... symlink resumed>) = 0 [pid 7349] <... symlink resumed>) = 0 [pid 4996] umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7350] memfd_create("syzkaller", 0 [pid 7349] memfd_create("syzkaller", 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7350] <... memfd_create resumed>) = 3 [pid 7349] <... memfd_create resumed>) = 3 [pid 7350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [ 198.123589][ T7345] NILFS (loop0): recovery complete [pid 7349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7350] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7349] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... openat resumed>) = 3 [pid 4994] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7345] <... mount resumed>) = 0 [pid 4996] fstat(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7345] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] lstat("./195/file0", [pid 7345] <... openat resumed>) = 3 [pid 4996] getdents64(3, [pid 7345] chdir("./file0" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7345] <... chdir resumed>) = 0 [pid 4996] umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7345] ioctl(4, LOOP_CLR_FD [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7345] <... ioctl resumed>) = 0 [pid 4996] lstat("./195/binderfs", [pid 4994] openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7345] close(4 [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... openat resumed>) = 4 [pid 7345] <... close resumed>) = 0 [pid 4996] unlink("./195/binderfs" [pid 4994] fstat(4, [pid 7345] creat("./bus", 000 [pid 4996] <... unlink resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4994] close(4) = 0 [pid 4994] rmdir("./195/file0") = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./195") = 0 [ 198.152276][ T7351] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] mkdir("./196", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7352 ./strace-static-x86_64: Process 7352 attached [pid 7352] chdir("./196" [pid 7345] <... creat resumed>) = 4 [pid 7345] unlink("./bus" [pid 4996] <... umount2 resumed>) = 0 [pid 7352] <... chdir resumed>) = 0 [pid 7352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7352] setpgid(0, 0 [pid 7345] <... unlink resumed>) = 0 [pid 7352] <... setpgid resumed>) = 0 [pid 7345] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7352] <... openat resumed>) = 3 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7352] write(3, "1000", 4 [pid 4996] lstat("./195/file0", [pid 7352] <... write resumed>) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7352] close(3 [pid 4996] umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7352] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7352] symlink("/dev/binderfs", "./binderfs" [pid 4996] openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7352] <... symlink resumed>) = 0 [pid 4996] <... openat resumed>) = 4 [pid 7352] memfd_create("syzkaller", 0 [pid 4996] fstat(4, [pid 7352] <... memfd_create resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4996] getdents64(4, [pid 7352] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7345] <... pwritev2 resumed>) = 65007 [pid 4996] getdents64(4, [pid 7345] exit_group(0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7345] <... exit_group resumed>) = ? [pid 4996] close(4 [pid 7349] <... write resumed>) = 2097152 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./195/file0" [pid 7349] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 7349] <... munmap resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4996] rmdir("./195" [pid 7349] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... rmdir resumed>) = 0 [pid 4996] mkdir("./196", 0777 [pid 7349] <... openat resumed>) = 4 [pid 4996] <... mkdir resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7349] ioctl(4, LOOP_SET_FD, 3 [pid 7345] +++ exited with 0 +++ [pid 4996] <... openat resumed>) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7345, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] restart_syscall(<... resuming interrupted clone ...> [pid 4996] close(3 [pid 4993] <... restart_syscall resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7350] <... write resumed>) = 2097152 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7353 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./196/binderfs") = 0 [pid 4993] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 7353 attached [pid 7353] chdir("./196") = 0 [pid 7353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7350] munmap(0x7f46b9f9b000, 2097152 [pid 7353] <... prctl resumed>) = 0 [pid 7350] <... munmap resumed>) = 0 [pid 7353] setpgid(0, 0) = 0 [pid 7353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7353] write(3, "1000", 4) = 4 [pid 7350] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7353] close(3 [pid 7350] <... openat resumed>) = 4 [pid 7353] <... close resumed>) = 0 [pid 7350] ioctl(4, LOOP_SET_FD, 3 [pid 7353] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7353] memfd_create("syzkaller", 0) = 3 [pid 7353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7352] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7349] <... ioctl resumed>) = 0 [pid 7349] close(3) = 0 [pid 7350] <... ioctl resumed>) = 0 [pid 7350] close(3) = 0 [pid 7349] mkdir("./file0", 0777) = 0 [pid 7350] mkdir("./file0", 0777) = 0 [pid 7350] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7349] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... umount2 resumed>) = 0 [ 198.279496][ T7349] loop5: detected capacity change from 0 to 4096 [ 198.300322][ T7350] loop4: detected capacity change from 0 to 4096 [pid 4993] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./196/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7352] <... write resumed>) = 2097152 [pid 4993] openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7352] munmap(0x7f46b9f9b000, 2097152 [pid 4993] <... openat resumed>) = 4 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(4, [pid 7352] <... munmap resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7352] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4993] getdents64(4, [pid 7352] <... openat resumed>) = 4 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7352] ioctl(4, LOOP_SET_FD, 3 [pid 4993] close(4) = 0 [pid 4993] rmdir("./196/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./196") = 0 [pid 4993] mkdir("./197", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7354 ./strace-static-x86_64: Process 7354 attached [ 198.345884][ T7349] NILFS (loop5): invalid segment: Checksum error in segment payload [ 198.360910][ T7349] NILFS (loop5): trying rollback from an earlier position [ 198.361390][ T7350] NILFS (loop4): invalid segment: Checksum error in segment payload [ 198.382476][ T7352] loop1: detected capacity change from 0 to 4096 [pid 7354] chdir("./197" [pid 7352] <... ioctl resumed>) = 0 [pid 7354] <... chdir resumed>) = 0 [pid 7354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7354] setpgid(0, 0) = 0 [pid 7354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7354] write(3, "1000", 4) = 4 [pid 7354] close(3) = 0 [pid 7354] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7352] close(3 [pid 7354] memfd_create("syzkaller", 0 [pid 7352] <... close resumed>) = 0 [pid 7354] <... memfd_create resumed>) = 3 [pid 7352] mkdir("./file0", 0777 [pid 7354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7352] <... mkdir resumed>) = 0 [pid 7352] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7349] <... mount resumed>) = 0 [pid 7349] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7349] chdir("./file0") = 0 [pid 7349] ioctl(4, LOOP_CLR_FD) = 0 [pid 7349] close(4) = 0 [ 198.402926][ T7349] NILFS (loop5): recovery complete [ 198.421504][ T7352] NILFS (loop1): invalid segment: Checksum error in segment payload [ 198.428981][ T7350] NILFS (loop4): trying rollback from an earlier position [ 198.429691][ T7355] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7353] <... write resumed>) = 2097152 [pid 7349] creat("./bus", 000 [pid 7353] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7353] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 7353] ioctl(4, LOOP_SET_FD, 3 [pid 7349] <... creat resumed>) = 4 [pid 7353] <... ioctl resumed>) = 0 [pid 7349] unlink("./bus" [pid 7353] close(3 [pid 7349] <... unlink resumed>) = 0 [pid 7353] <... close resumed>) = 0 [pid 7349] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7354] <... write resumed>) = 2097152 [pid 7353] mkdir("./file0", 0777) = 0 [pid 7353] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 198.467643][ T7352] NILFS (loop1): trying rollback from an earlier position [ 198.487337][ T7353] loop3: detected capacity change from 0 to 4096 [ 198.488915][ T7352] NILFS (loop1): recovery complete [ 198.509704][ T7350] NILFS (loop4): recovery complete [pid 7354] munmap(0x7f46b9f9b000, 2097152 [pid 7349] <... pwritev2 resumed>) = 65007 [pid 7354] <... munmap resumed>) = 0 [pid 7349] exit_group(0 [pid 7352] <... mount resumed>) = 0 [pid 7352] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7352] chdir("./file0") = 0 [pid 7352] ioctl(4, LOOP_CLR_FD [pid 7354] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7349] <... exit_group resumed>) = ? [pid 7352] <... ioctl resumed>) = 0 [pid 7352] close(4) = 0 [pid 7352] creat("./bus", 000) = 4 [pid 7352] unlink("./bus") = 0 [ 198.520965][ T7356] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 198.521778][ T7357] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7352] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7354] <... openat resumed>) = 4 [pid 7354] ioctl(4, LOOP_SET_FD, 3 [pid 7349] +++ exited with 0 +++ [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7349, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./196/binderfs") = 0 [pid 4998] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7350] <... mount resumed>) = 0 [pid 7350] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7354] <... ioctl resumed>) = 0 [pid 7350] <... openat resumed>) = 3 [pid 7354] close(3 [pid 7350] chdir("./file0" [pid 7354] <... close resumed>) = 0 [pid 7350] <... chdir resumed>) = 0 [pid 7354] mkdir("./file0", 0777 [pid 7350] ioctl(4, LOOP_CLR_FD [pid 7354] <... mkdir resumed>) = 0 [pid 7352] <... pwritev2 resumed>) = 65007 [pid 7350] <... ioctl resumed>) = 0 [pid 7352] exit_group(0) = ? [pid 7354] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7350] close(4) = 0 [pid 7352] +++ exited with 0 +++ [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7352, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4994] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 4994] umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4994] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4994] umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [ 198.564978][ T7353] NILFS (loop3): invalid segment: Checksum error in segment payload [ 198.574477][ T7353] NILFS (loop3): trying rollback from an earlier position [ 198.582057][ T7354] loop0: detected capacity change from 0 to 4096 [pid 7350] creat("./bus", 000 [pid 4994] unlink("./196/binderfs") = 0 [pid 7350] <... creat resumed>) = 4 [pid 4994] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7350] unlink("./bus" [pid 7353] <... mount resumed>) = 0 [pid 7350] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = 0 [pid 7353] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7350] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7353] <... openat resumed>) = 3 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7353] chdir("./file0" [pid 4998] lstat("./196/file0", [pid 7353] <... chdir resumed>) = 0 [pid 7353] ioctl(4, LOOP_CLR_FD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7353] <... ioctl resumed>) = 0 [pid 4998] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7353] close(4) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7353] creat("./bus", 000 [pid 4998] openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./196/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [ 198.635158][ T7353] NILFS (loop3): recovery complete [ 198.637121][ T7354] NILFS (loop0): invalid segment: Checksum error in segment payload [ 198.651524][ T7354] NILFS (loop0): trying rollback from an earlier position [ 198.659231][ T7358] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4998] rmdir("./196") = 0 [pid 4998] mkdir("./197", 0777) = 0 [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 7350] <... pwritev2 resumed>) = 65007 [pid 7350] exit_group(0 [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7350] <... exit_group resumed>) = ? [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7359 [pid 7353] <... creat resumed>) = 4 [ 198.692888][ T7354] NILFS (loop0): recovery complete [pid 7353] unlink("./bus"./strace-static-x86_64: Process 7359 attached [pid 7354] <... mount resumed>) = 0 [pid 7353] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 7354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7353] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7354] <... openat resumed>) = 3 [pid 7359] chdir("./197" [pid 4994] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7359] <... chdir resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7359] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] lstat("./196/file0", [pid 7359] <... prctl resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7359] setpgid(0, 0 [pid 4994] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7359] <... setpgid resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7359] <... openat resumed>) = 3 [pid 4994] <... openat resumed>) = 4 [pid 7359] write(3, "1000", 4 [pid 4994] fstat(4, [pid 7359] <... write resumed>) = 4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7359] close(3 [pid 4994] getdents64(4, [pid 7354] chdir("./file0" [pid 7359] <... close resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7354] <... chdir resumed>) = 0 [pid 7359] symlink("/dev/binderfs", "./binderfs" [pid 4994] getdents64(4, [pid 7359] <... symlink resumed>) = 0 [pid 7354] ioctl(4, LOOP_CLR_FD [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7359] memfd_create("syzkaller", 0 [pid 7354] <... ioctl resumed>) = 0 [pid 4994] close(4 [pid 7359] <... memfd_create resumed>) = 3 [pid 7354] close(4 [pid 4994] <... close resumed>) = 0 [pid 7359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7354] <... close resumed>) = 0 [pid 4994] rmdir("./196/file0" [pid 7359] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7354] creat("./bus", 000 [pid 4994] <... rmdir resumed>) = 0 [pid 4994] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] close(3) = 0 [pid 4994] rmdir("./196") = 0 [pid 4994] mkdir("./197", 0777) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7353] <... pwritev2 resumed>) = 65007 [pid 7350] +++ exited with 0 +++ [pid 4994] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 7354] <... creat resumed>) = 4 [pid 7353] exit_group(0 [pid 4994] close(3) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7354] unlink("./bus" [pid 7353] <... exit_group resumed>) = ? [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7350, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7361 ./strace-static-x86_64: Process 7361 attached [pid 7359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7354] <... unlink resumed>) = 0 [pid 4997] restart_syscall(<... resuming interrupted clone ...>) = 0 [ 198.720088][ T7360] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7354] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7353] +++ exited with 0 +++ [pid 4997] umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7353, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 4997] <... openat resumed>) = 3 [pid 4996] umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] getdents64(3, [pid 4996] openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, [pid 4997] umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4996] getdents64(3, [pid 4997] lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] unlink("./196/binderfs" [pid 4996] umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] <... unlink resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4996] lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7361] chdir("./197") = 0 [pid 4996] unlink("./196/binderfs") = 0 [pid 4996] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7361] setpgid(0, 0) = 0 [pid 7361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7361] write(3, "1000", 4) = 4 [pid 7361] close(3) = 0 [pid 7361] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7361] memfd_create("syzkaller", 0) = 3 [pid 7361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7354] <... pwritev2 resumed>) = 65007 [pid 7354] exit_group(0) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 7354] +++ exited with 0 +++ [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7354, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 4997] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./196/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4997] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./196/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3) = 0 [pid 4997] rmdir("./196") = 0 [pid 4997] mkdir("./197", 0777) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4997] close(3) = 0 [pid 7361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7362 [pid 4993] umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4993] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4993] umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./197/binderfs") = 0 ./strace-static-x86_64: Process 7362 attached [pid 4993] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 4993] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] <... umount2 resumed>) = 0 [pid 4993] lstat("./197/file0", [pid 4996] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./196/file0", [pid 4993] openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] getdents64(4, [pid 7362] chdir("./197" [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7362] <... chdir resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7359] <... write resumed>) = 2097152 [pid 4996] openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7362] <... prctl resumed>) = 0 [pid 4993] getdents64(4, [pid 7362] setpgid(0, 0 [pid 7359] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... openat resumed>) = 4 [pid 7362] <... setpgid resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4996] fstat(4, [pid 4993] close(4 [pid 7362] <... openat resumed>) = 3 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... close resumed>) = 0 [pid 7362] write(3, "1000", 4 [pid 4996] getdents64(4, [pid 4993] rmdir("./197/file0" [pid 7362] <... write resumed>) = 4 [pid 7359] <... munmap resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] <... rmdir resumed>) = 0 [pid 7362] close(3 [pid 4996] getdents64(4, [pid 4993] getdents64(3, [pid 7362] <... close resumed>) = 0 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7362] symlink("/dev/binderfs", "./binderfs" [pid 7359] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] close(4 [pid 4993] close(3 [pid 7362] <... symlink resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 7362] memfd_create("syzkaller", 0 [pid 7359] <... openat resumed>) = 4 [pid 4996] rmdir("./196/file0" [pid 4993] rmdir("./197" [pid 7362] <... memfd_create resumed>) = 3 [pid 7359] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] mkdir("./198", 0777 [pid 7362] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] <... mkdir resumed>) = 0 [pid 7359] <... ioctl resumed>) = 0 [pid 4996] getdents64(3, [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3 [pid 7359] close(3 [pid 4996] <... close resumed>) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4996] rmdir("./196" [pid 4993] ioctl(3, LOOP_CLR_FD [pid 7359] <... close resumed>) = 0 [pid 4993] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] close(3 [pid 7361] <... write resumed>) = 2097152 [pid 7359] mkdir("./file0", 0777 [pid 4996] <... rmdir resumed>) = 0 [pid 4993] <... close resumed>) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7361] munmap(0x7f46b9f9b000, 2097152 [pid 7359] <... mkdir resumed>) = 0 [pid 4996] mkdir("./197", 0777 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7363 [pid 4996] <... mkdir resumed>) = 0 [pid 7359] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7361] <... munmap resumed>) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7361] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... openat resumed>) = 3 [pid 7361] <... openat resumed>) = 4 ./strace-static-x86_64: Process 7363 attached [pid 7363] chdir("./198") = 0 [pid 7363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7363] setpgid(0, 0) = 0 [pid 7363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7363] write(3, "1000", 4) = 4 [pid 7363] close(3) = 0 [pid 7363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7363] memfd_create("syzkaller", 0 [pid 4996] ioctl(3, LOOP_CLR_FD [pid 7361] ioctl(4, LOOP_SET_FD, 3 [pid 4996] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4996] close(3 [pid 7363] <... memfd_create resumed>) = 3 [pid 7363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [ 198.905864][ T7359] loop5: detected capacity change from 0 to 4096 [ 198.938813][ T7359] NILFS (loop5): invalid segment: Checksum error in segment payload [ 198.948357][ T7361] loop1: detected capacity change from 0 to 4096 [pid 7362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7361] <... ioctl resumed>) = 0 [pid 4996] <... close resumed>) = 0 [pid 7361] close(3 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7361] <... close resumed>) = 0 [pid 7361] mkdir("./file0", 0777) = 0 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7364 [pid 7361] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, ""./strace-static-x86_64: Process 7364 attached [pid 7364] chdir("./197") = 0 [pid 7364] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7364] <... prctl resumed>) = 0 [pid 7364] setpgid(0, 0) = 0 [pid 7364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 7364] write(3, "1000", 4) = 4 [pid 7364] close(3) = 0 [pid 7364] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7364] memfd_create("syzkaller", 0) = 3 [pid 7364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7362] <... write resumed>) = 2097152 [ 198.957433][ T7359] NILFS (loop5): trying rollback from an earlier position [ 198.988356][ T7361] NILFS (loop1): invalid segment: Checksum error in segment payload [pid 7362] munmap(0x7f46b9f9b000, 2097152) = 0 [pid 7362] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 7362] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7359] <... mount resumed>) = 0 [pid 7359] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7359] chdir("./file0" [pid 7362] close(3 [pid 7359] <... chdir resumed>) = 0 [pid 7362] <... close resumed>) = 0 [pid 7359] ioctl(4, LOOP_CLR_FD [pid 7362] mkdir("./file0", 0777 [pid 7359] <... ioctl resumed>) = 0 [pid 7364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7359] close(4 [pid 7362] <... mkdir resumed>) = 0 [pid 7359] <... close resumed>) = 0 [ 199.016488][ T7361] NILFS (loop1): trying rollback from an earlier position [ 199.026385][ T7359] NILFS (loop5): recovery complete [ 199.036948][ T7362] loop4: detected capacity change from 0 to 4096 [ 199.045517][ T7365] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7362] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7359] creat("./bus", 000) = 4 [pid 7359] unlink("./bus" [pid 7363] <... write resumed>) = 2097152 [pid 7359] <... unlink resumed>) = 0 [pid 7359] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7361] <... mount resumed>) = 0 [pid 7361] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7361] chdir("./file0") = 0 [pid 7361] ioctl(4, LOOP_CLR_FD) = 0 [ 199.075680][ T7361] NILFS (loop1): recovery complete [ 199.086339][ T7362] NILFS (loop4): invalid segment: Checksum error in segment payload [ 199.101582][ T7366] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7361] close(4 [pid 7363] munmap(0x7f46b9f9b000, 2097152 [pid 7361] <... close resumed>) = 0 [pid 7359] <... pwritev2 resumed>) = 65007 [pid 7359] exit_group(0) = ? [pid 7363] <... munmap resumed>) = 0 [pid 7361] creat("./bus", 000 [pid 7363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 7363] ioctl(4, LOOP_SET_FD, 3 [pid 7359] +++ exited with 0 +++ [pid 7364] <... write resumed>) = 2097152 [pid 7363] <... ioctl resumed>) = 0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7359, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=6 /* 0.06 s */} --- [pid 7364] munmap(0x7f46b9f9b000, 2097152 [pid 7363] close(3 [pid 4998] restart_syscall(<... resuming interrupted clone ...> [pid 7364] <... munmap resumed>) = 0 [pid 7363] <... close resumed>) = 0 [pid 4998] <... restart_syscall resumed>) = 0 [pid 7364] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 7363] mkdir("./file0", 0777 [pid 7364] <... openat resumed>) = 4 [pid 7363] <... mkdir resumed>) = 0 [pid 7361] <... creat resumed>) = 4 [pid 7364] ioctl(4, LOOP_SET_FD, 3 [pid 7363] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [ 199.121273][ T7362] NILFS (loop4): trying rollback from an earlier position [ 199.140807][ T7363] loop0: detected capacity change from 0 to 4096 [ 199.141348][ T7362] NILFS (loop4): recovery complete [ 199.159224][ T7364] loop3: detected capacity change from 0 to 4096 [pid 7361] unlink("./bus" [pid 4998] umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7362] <... mount resumed>) = 0 [pid 7361] <... unlink resumed>) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7361] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4998] openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7364] <... ioctl resumed>) = 0 [pid 4998] <... openat resumed>) = 3 [pid 7364] close(3 [pid 4998] fstat(3, [pid 7364] <... close resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7364] mkdir("./file0", 0777 [pid 4998] getdents64(3, [pid 7364] <... mkdir resumed>) = 0 [pid 4998] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7364] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7362] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] unlink("./197/binderfs") = 0 [pid 4998] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7361] <... pwritev2 resumed>) = 65007 [pid 7362] <... openat resumed>) = 3 [pid 7362] chdir("./file0") = 0 [pid 7362] ioctl(4, LOOP_CLR_FD [pid 7361] exit_group(0 [pid 7362] <... ioctl resumed>) = 0 [ 199.171837][ T7363] NILFS (loop0): invalid segment: Checksum error in segment payload [ 199.174961][ T7367] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 199.191515][ T7363] NILFS (loop0): trying rollback from an earlier position [ 199.210121][ T7363] NILFS (loop0): recovery complete [pid 7362] close(4) = 0 [pid 7361] <... exit_group resumed>) = ? [pid 7362] creat("./bus", 000) = 4 [pid 7362] unlink("./bus") = 0 [pid 7362] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7363] <... mount resumed>) = 0 [pid 7361] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = 0 [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7361, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 7363] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7362] <... pwritev2 resumed>) = 65007 [pid 7362] exit_group(0 [pid 7363] <... openat resumed>) = 3 [pid 7362] <... exit_group resumed>) = ? [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7363] chdir("./file0" [pid 4998] lstat("./197/file0", [pid 7363] <... chdir resumed>) = 0 [pid 7363] ioctl(4, LOOP_CLR_FD [pid 4998] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7363] <... ioctl resumed>) = 0 [pid 4998] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7363] close(4) = 0 [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7363] creat("./bus", 000 [pid 4994] umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... openat resumed>) = 4 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... openat resumed>) = 3 [pid 4998] getdents64(4, [pid 4994] fstat(3, [pid 4998] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] getdents64(3, [pid 4998] rmdir("./197/file0" [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] <... rmdir resumed>) = 0 [pid 4994] umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] getdents64(3, [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4994] lstat("./197/binderfs", [pid 4998] close(3 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] <... close resumed>) = 0 [pid 4994] unlink("./197/binderfs" [pid 4998] rmdir("./197") = 0 [pid 4994] <... unlink resumed>) = 0 [pid 4998] mkdir("./198", 0777 [pid 4994] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7362] +++ exited with 0 +++ [pid 4998] <... mkdir resumed>) = 0 [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7362, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7363] <... creat resumed>) = 4 [pid 7363] unlink("./bus" [pid 4997] umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 7363] <... unlink resumed>) = 0 [pid 4997] fstat(3, [pid 7363] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, [pid 4998] <... openat resumed>) = 3 [pid 4997] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4998] ioctl(3, LOOP_CLR_FD [pid 4997] umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4998] close(3 [ 199.220360][ T7364] NILFS (loop3): invalid segment: Checksum error in segment payload [ 199.242280][ T7368] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 199.254372][ T7364] NILFS (loop3): trying rollback from an earlier position [pid 4997] lstat("./197/binderfs", [pid 4998] <... close resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] unlink("./197/binderfs") = 0 [pid 4997] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4998] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7369 [pid 4994] <... umount2 resumed>) = 0 [pid 4994] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7363] <... pwritev2 resumed>) = 65007 [pid 7363] exit_group(0) = ? ./strace-static-x86_64: Process 7369 attached [pid 7369] chdir("./198" [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7369] <... chdir resumed>) = 0 [pid 7369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4994] lstat("./197/file0", [pid 7364] <... mount resumed>) = 0 [pid 7369] setpgid(0, 0) = 0 [pid 7369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7364] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 7364] <... openat resumed>) = 3 [pid 7369] <... openat resumed>) = 3 [pid 4994] openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4994] fstat(4, [pid 7364] chdir("./file0" [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7364] <... chdir resumed>) = 0 [pid 7364] ioctl(4, LOOP_CLR_FD [pid 4994] getdents64(4, [pid 7364] <... ioctl resumed>) = 0 [pid 7364] close(4 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7364] <... close resumed>) = 0 [pid 4994] getdents64(4, [pid 7369] write(3, "1000", 4) = 4 [pid 7369] close(3) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7364] creat("./bus", 000 [pid 7369] symlink("/dev/binderfs", "./binderfs") = 0 [pid 4994] close(4 [pid 7369] memfd_create("syzkaller", 0 [pid 4994] <... close resumed>) = 0 [ 199.325615][ T7364] NILFS (loop3): recovery complete [pid 4994] rmdir("./197/file0" [pid 7369] <... memfd_create resumed>) = 3 [pid 7369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7363] +++ exited with 0 +++ [pid 4994] <... rmdir resumed>) = 0 [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7363, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 4994] getdents64(3, [pid 4993] umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] close(3 [pid 4993] <... openat resumed>) = 3 [pid 4997] <... umount2 resumed>) = 0 [pid 4993] fstat(3, [pid 4994] <... close resumed>) = 0 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7364] <... creat resumed>) = 4 [pid 4997] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] rmdir("./197" [pid 4993] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7364] unlink("./bus" [pid 4993] umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./198/binderfs", [pid 4994] <... rmdir resumed>) = 0 [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4993] unlink("./198/binderfs" [pid 4994] mkdir("./198", 0777 [pid 4993] <... unlink resumed>) = 0 [pid 4997] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7364] <... unlink resumed>) = 0 [pid 4993] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7364] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4997] lstat("./197/file0", [pid 4994] <... mkdir resumed>) = 0 [pid 4993] <... umount2 resumed>) = 0 [pid 4997] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 4997] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4997] openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4997] <... openat resumed>) = 4 [pid 4994] close(3 [pid 4997] fstat(4, [pid 4994] <... close resumed>) = 0 [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7371 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./197/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4993] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] lstat("./198/file0", [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./197") = 0 [pid 4997] mkdir("./198", 0777 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4993] openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... mkdir resumed>) = 0 [pid 4993] <... openat resumed>) = 4 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 7371 attached [ 199.353480][ T7370] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4997] <... openat resumed>) = 3 [pid 4993] fstat(4, [pid 4997] ioctl(3, LOOP_CLR_FD [pid 7371] chdir("./198" [pid 7364] <... pwritev2 resumed>) = 65007 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7371] <... chdir resumed>) = 0 [pid 4997] close(3 [pid 4993] getdents64(4, [pid 7371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4997] <... close resumed>) = 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7364] exit_group(0 [pid 7371] <... prctl resumed>) = 0 [pid 4993] getdents64(4, [pid 7364] <... exit_group resumed>) = ? [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7371] setpgid(0, 0 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7371] <... setpgid resumed>) = 0 [pid 4993] close(4 [pid 7371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4993] <... close resumed>) = 0 [pid 7371] <... openat resumed>) = 3 [pid 4993] rmdir("./198/file0" [pid 7371] write(3, "1000", 4 [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7372 [pid 4993] <... rmdir resumed>) = 0 [pid 7371] <... write resumed>) = 4 [pid 4993] getdents64(3, [pid 7371] close(3 [pid 4993] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7371] <... close resumed>) = 0 [pid 4993] close(3 [pid 7371] symlink("/dev/binderfs", "./binderfs" [pid 4993] <... close resumed>) = 0 [pid 7371] <... symlink resumed>) = 0 [pid 4993] rmdir("./198" [pid 7371] memfd_create("syzkaller", 0 [pid 4993] <... rmdir resumed>) = 0 [pid 7371] <... memfd_create resumed>) = 3 [pid 4993] mkdir("./199", 0777 [pid 7371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... mkdir resumed>) = 0 [pid 7371] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7373 ./strace-static-x86_64: Process 7372 attached [pid 7372] chdir("./198") = 0 ./strace-static-x86_64: Process 7373 attached [pid 7372] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7373] chdir("./199" [pid 7372] <... prctl resumed>) = 0 [pid 7373] <... chdir resumed>) = 0 [pid 7372] setpgid(0, 0 [pid 7373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7372] <... setpgid resumed>) = 0 [pid 7371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7373] <... prctl resumed>) = 0 [pid 7372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7373] setpgid(0, 0 [pid 7372] <... openat resumed>) = 3 [pid 7364] +++ exited with 0 +++ [pid 7373] <... setpgid resumed>) = 0 [pid 7372] write(3, "1000", 4 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7364, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 7373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7372] <... write resumed>) = 4 [pid 4996] restart_syscall(<... resuming interrupted clone ...> [pid 7373] <... openat resumed>) = 3 [pid 7372] close(3 [pid 4996] <... restart_syscall resumed>) = 0 [pid 7373] write(3, "1000", 4 [pid 7372] <... close resumed>) = 0 [pid 7373] <... write resumed>) = 4 [pid 7372] symlink("/dev/binderfs", "./binderfs" [pid 7373] close(3 [pid 7372] <... symlink resumed>) = 0 [pid 7373] <... close resumed>) = 0 [pid 7372] memfd_create("syzkaller", 0 [pid 7373] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7372] <... memfd_create resumed>) = 3 [pid 4996] umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7373] memfd_create("syzkaller", 0 [pid 7372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7373] <... memfd_create resumed>) = 3 [pid 7372] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4996] openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7369] <... write resumed>) = 2097152 [pid 7369] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... openat resumed>) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, [pid 7369] <... munmap resumed>) = 0 [pid 7369] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 4996] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7371] <... write resumed>) = 2097152 [pid 7369] <... openat resumed>) = 4 [pid 4996] umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7371] munmap(0x7f46b9f9b000, 2097152 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7369] ioctl(4, LOOP_SET_FD, 3 [pid 7372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7371] <... munmap resumed>) = 0 [pid 4996] lstat("./197/binderfs", [pid 7371] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 4996] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7371] <... openat resumed>) = 4 [pid 7369] <... ioctl resumed>) = 0 [pid 7373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7372] <... write resumed>) = 2097152 [pid 7371] ioctl(4, LOOP_SET_FD, 3 [pid 4996] unlink("./197/binderfs" [pid 7369] close(3) = 0 [pid 7369] mkdir("./file0", 0777) = 0 [pid 7369] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] <... unlink resumed>) = 0 [pid 4996] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7372] munmap(0x7f46b9f9b000, 2097152 [pid 7371] <... ioctl resumed>) = 0 [pid 7372] <... munmap resumed>) = 0 [pid 7371] close(3 [pid 7372] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 7371] <... close resumed>) = 0 [pid 7372] <... openat resumed>) = 4 [pid 7371] mkdir("./file0", 0777 [pid 7372] ioctl(4, LOOP_SET_FD, 3 [pid 7371] <... mkdir resumed>) = 0 [ 199.510826][ T7369] loop5: detected capacity change from 0 to 4096 [ 199.529764][ T7371] loop1: detected capacity change from 0 to 4096 [pid 7372] <... ioctl resumed>) = 0 [pid 7371] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7373] <... write resumed>) = 2097152 [pid 7372] close(3 [pid 7373] munmap(0x7f46b9f9b000, 2097152 [pid 7372] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 7373] <... munmap resumed>) = 0 [pid 7372] mkdir("./file0", 0777) = 0 [pid 7372] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 199.555358][ T7372] loop4: detected capacity change from 0 to 4096 [ 199.567176][ T7371] NILFS (loop1): invalid segment: Checksum error in segment payload [ 199.574026][ T7369] NILFS (loop5): invalid segment: Checksum error in segment payload [ 199.579254][ T7371] NILFS (loop1): trying rollback from an earlier position [ 199.588689][ T7369] NILFS (loop5): trying rollback from an earlier position [pid 7373] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 7373] close(3 [pid 4996] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./197/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7373] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] mkdir("./file0", 0777 [pid 7369] <... mount resumed>) = 0 [pid 4996] openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7373] <... mkdir resumed>) = 0 [pid 7369] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] <... openat resumed>) = 4 [pid 7373] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7369] <... openat resumed>) = 3 [ 199.606829][ T7373] loop0: detected capacity change from 0 to 4096 [ 199.613685][ T7369] NILFS (loop5): recovery complete [ 199.620037][ T7372] NILFS (loop4): invalid segment: Checksum error in segment payload [ 199.621644][ T7371] NILFS (loop1): recovery complete [ 199.630230][ T7372] NILFS (loop4): trying rollback from an earlier position [ 199.635520][ T7374] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4996] fstat(4, [pid 7371] <... mount resumed>) = 0 [pid 7369] chdir("./file0" [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7371] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7371] chdir("./file0") = 0 [pid 7371] ioctl(4, LOOP_CLR_FD) = 0 [pid 7371] close(4) = 0 [pid 7369] <... chdir resumed>) = 0 [pid 4996] getdents64(4, [pid 7371] creat("./bus", 000 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4996] getdents64(4, [pid 7369] ioctl(4, LOOP_CLR_FD [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7369] <... ioctl resumed>) = 0 [pid 4996] close(4 [pid 7369] close(4 [pid 4996] <... close resumed>) = 0 [pid 7369] <... close resumed>) = 0 [pid 4996] rmdir("./197/file0" [pid 7369] creat("./bus", 000 [pid 4996] <... rmdir resumed>) = 0 [pid 7371] <... creat resumed>) = 4 [pid 7371] unlink("./bus" [pid 7369] <... creat resumed>) = 4 [pid 4996] getdents64(3, [pid 7369] unlink("./bus" [pid 4996] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4996] close(3) = 0 [pid 7369] <... unlink resumed>) = 0 [pid 4996] rmdir("./197" [pid 7369] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] <... rmdir resumed>) = 0 [pid 4996] mkdir("./198", 0777) = 0 [pid 4996] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 4996] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4996] close(3) = 0 [pid 7371] <... unlink resumed>) = 0 [pid 4996] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7371] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 7369] <... pwritev2 resumed>) = 65007 [pid 4996] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7376 [ 199.653158][ T7375] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 199.660234][ T7373] NILFS (loop0): invalid segment: Checksum error in segment payload [ 199.672931][ T7373] NILFS (loop0): trying rollback from an earlier position [ 199.690074][ T7372] NILFS (loop4): recovery complete [pid 7369] exit_group(0) = ? ./strace-static-x86_64: Process 7376 attached [pid 7376] chdir("./198") = 0 [pid 7376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7376] setpgid(0, 0) = 0 [pid 7376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7371] <... pwritev2 resumed>) = 65007 [pid 7369] +++ exited with 0 +++ [pid 7371] exit_group(0 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7369, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 4998] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 7371] <... exit_group resumed>) = ? [pid 4998] umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7376] <... openat resumed>) = 3 [pid 4998] <... openat resumed>) = 3 [pid 4998] fstat(3, [pid 7376] write(3, "1000", 4 [pid 7372] <... mount resumed>) = 0 [pid 4998] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 199.717476][ T7373] NILFS (loop0): recovery complete [pid 7376] <... write resumed>) = 4 [pid 7376] close(3) = 0 [pid 7376] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7376] memfd_create("syzkaller", 0) = 3 [pid 7376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 4998] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7372] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4998] umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7372] <... openat resumed>) = 3 [pid 7376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7373] <... mount resumed>) = 0 [pid 7372] chdir("./file0" [pid 7371] +++ exited with 0 +++ [pid 4998] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 7372] <... chdir resumed>) = 0 [pid 4998] lstat("./198/binderfs", [pid 4994] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7371, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 7373] <... openat resumed>) = 3 [pid 4998] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7373] chdir("./file0" [pid 7372] ioctl(4, LOOP_CLR_FD [pid 4998] unlink("./198/binderfs" [pid 7372] <... ioctl resumed>) = 0 [pid 7373] <... chdir resumed>) = 0 [pid 7372] close(4 [pid 4998] <... unlink resumed>) = 0 [pid 4994] umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7373] ioctl(4, LOOP_CLR_FD [pid 7372] <... close resumed>) = 0 [pid 4998] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7376] <... write resumed>) = 2097152 [pid 7373] <... ioctl resumed>) = 0 [pid 7372] creat("./bus", 000 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] close(4 [pid 4994] openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7373] <... close resumed>) = 0 [pid 7373] creat("./bus", 000 [pid 7372] <... creat resumed>) = 4 [pid 4994] <... openat resumed>) = 3 [pid 7376] munmap(0x7f46b9f9b000, 2097152 [pid 7372] unlink("./bus" [ 199.744653][ T7378] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 199.757203][ T7377] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 4994] fstat(3, [pid 7376] <... munmap resumed>) = 0 [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7376] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 4994] getdents64(3, [pid 7376] <... openat resumed>) = 4 [pid 4994] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 7376] ioctl(4, LOOP_SET_FD, 3 [pid 4994] umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7373] <... creat resumed>) = 4 [pid 7372] <... unlink resumed>) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] unlink("./bus" [pid 7372] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] lstat("./198/binderfs", [pid 7373] <... unlink resumed>) = 0 [pid 4994] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] unlink("./198/binderfs" [pid 7376] <... ioctl resumed>) = 0 [pid 7373] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4994] <... unlink resumed>) = 0 [pid 7376] close(3 [pid 4994] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7376] <... close resumed>) = 0 [pid 7376] mkdir("./file0", 0777) = 0 [pid 7376] mount("/dev/loop3", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4998] <... umount2 resumed>) = 0 [pid 4998] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] lstat("./198/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 4998] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4998] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4998] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4998] close(4) = 0 [pid 4998] rmdir("./198/file0") = 0 [pid 4998] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4998] close(3) = 0 [pid 4998] rmdir("./198") = 0 [pid 4998] mkdir("./199", 0777) = 0 [pid 7372] <... pwritev2 resumed>) = 65007 [ 199.802508][ T7376] loop3: detected capacity change from 0 to 4096 [ 199.841929][ T7376] NILFS (loop3): invalid segment: Checksum error in segment payload [pid 4998] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7372] exit_group(0) = ? [pid 4998] <... openat resumed>) = 3 [pid 4998] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4998] close(3) = 0 [pid 4998] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556cac5d0) = 7379 ./strace-static-x86_64: Process 7379 attached [pid 7379] chdir("./199" [pid 7372] +++ exited with 0 +++ [pid 4997] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7372, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 7379] <... chdir resumed>) = 0 [pid 7379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 7379] setpgid(0, 0) = 0 [pid 4997] umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 7379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4997] <... openat resumed>) = 3 [pid 4997] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7379] <... openat resumed>) = 3 [pid 4997] unlink("./198/binderfs" [pid 7379] write(3, "1000", 4) = 4 [pid 4997] <... unlink resumed>) = 0 [pid 4997] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7379] close(3) = 0 [pid 7379] symlink("/dev/binderfs", "./binderfs") = 0 [pid 7379] memfd_create("syzkaller", 0) = 3 [pid 7379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f46b9f9b000 [pid 7373] <... pwritev2 resumed>) = 65007 [pid 7373] exit_group(0) = ? [pid 4997] <... umount2 resumed>) = 0 [pid 4994] <... umount2 resumed>) = 0 [pid 4997] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4997] lstat("./198/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4994] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7373] +++ exited with 0 +++ [pid 4997] openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7373, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 4997] <... openat resumed>) = 4 [pid 4993] umount2("./199", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 199.861240][ T7376] NILFS (loop3): trying rollback from an earlier position [pid 4997] fstat(4, [pid 4994] lstat("./198/file0", [pid 4993] openat(AT_FDCWD, "./199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4997] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] getdents64(4, 0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4997] getdents64(4, 0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4997] close(4) = 0 [pid 4997] rmdir("./198/file0") = 0 [pid 4997] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4997] close(3 [pid 4994] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... openat resumed>) = 3 [pid 4997] <... close resumed>) = 0 [pid 4997] rmdir("./198") = 0 [pid 4994] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4993] fstat(3, [pid 4997] mkdir("./199", 0777) = 0 [pid 4994] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4997] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4994] openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 4993] getdents64(3, [pid 4997] <... openat resumed>) = 3 [pid 4997] ioctl(3, LOOP_CLR_FD [pid 4993] <... getdents64 resumed>0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4997] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 4994] <... openat resumed>) = 4 [pid 4997] close(3) = 0 [pid 4994] fstat(4, [pid 4993] umount2("./199/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4997] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4994] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 4997] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7380 [pid 4993] lstat("./199/binderfs", [pid 4994] getdents64(4, [pid 4993] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 4993] unlink("./199/binderfs"./strace-static-x86_64: Process 7380 attached [pid 4994] getdents64(4, [pid 4993] <... unlink resumed>) = 0 [pid 4994] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 4993] umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 4994] close(4) = 0 [pid 4994] rmdir("./198/file0" [pid 7380] chdir("./199" [pid 4994] <... rmdir resumed>) = 0 [pid 7380] <... chdir resumed>) = 0 [pid 7379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 4994] getdents64(3, [pid 7380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 4994] <... getdents64 resumed>0x555556cad620 /* 0 entries */, 32768) = 0 [pid 7380] <... prctl resumed>) = 0 [pid 4994] close(3 [pid 7380] setpgid(0, 0 [pid 4994] <... close resumed>) = 0 [pid 7380] <... setpgid resumed>) = 0 [ 199.939816][ T7376] NILFS (loop3): recovery complete [pid 4994] rmdir("./198" [pid 7380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 4994] <... rmdir resumed>) = 0 [pid 7380] <... openat resumed>) = 3 [pid 4994] mkdir("./199", 0777 [pid 7380] write(3, "1000", 4 [pid 4994] <... mkdir resumed>) = 0 [pid 7380] <... write resumed>) = 4 [pid 7376] <... mount resumed>) = 0 [pid 4994] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7380] close(3 [pid 7376] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4994] <... openat resumed>) = 3 [pid 7380] <... close resumed>) = 0 [pid 7376] <... openat resumed>) = 3 [pid 4994] ioctl(3, LOOP_CLR_FD [pid 4993] <... umount2 resumed>) = 0 [pid 7380] symlink("/dev/binderfs", "./binderfs" [pid 7376] chdir("./file0" [pid 4994] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 7380] <... symlink resumed>) = 0 [pid 7376] <... chdir resumed>) = 0 [pid 4994] close(3 [pid 4993] umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7380] memfd_create("syzkaller", 0 [pid 7379] <... write resumed>) = 2097152 [pid 7376] ioctl(4, LOOP_CLR_FD [pid 4994] <... close resumed>) = 0 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7380] <... memfd_create resumed>) = 3 [pid 7379] munmap(0x7f46b9f9b000, 2097152 [pid 7376] <... ioctl resumed>) = 0 [pid 4994] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 4993] lstat("./199/file0", [pid 7379] <... munmap resumed>) = 0 [pid 7376] close(4 [pid 4993] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7379] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 7376] <... close resumed>) = 0 [pid 4993] umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7379] <... openat resumed>) = 4 [pid 7376] creat("./bus", 000 [pid 4993] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7379] ioctl(4, LOOP_SET_FD, 3 [pid 4993] openat(AT_FDCWD, "./199/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 7382 attached [pid 7380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 4993] <... openat resumed>) = 4 [pid 7380] <... mmap resumed>) = 0x7f46b9f9b000 [pid 4994] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7382 [pid 4993] fstat(4, [pid 7376] <... creat resumed>) = 4 [pid 4993] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7379] <... ioctl resumed>) = 0 [pid 7376] unlink("./bus" [pid 4993] getdents64(4, [pid 7379] close(3 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7379] <... close resumed>) = 0 [pid 4993] getdents64(4, [pid 7379] mkdir("./file0", 0777 [pid 4993] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7379] <... mkdir resumed>) = 0 [pid 4993] close(4 [pid 7379] mount("/dev/loop5", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4993] <... close resumed>) = 0 [pid 4993] rmdir("./199/file0") = 0 [pid 4993] getdents64(3, 0x555556cad620 /* 0 entries */, 32768) = 0 [pid 4993] close(3) = 0 [pid 4993] rmdir("./199") = 0 [pid 4993] mkdir("./200", 0777) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 4993] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 4993] close(3) = 0 [pid 4993] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 7382] chdir("./199" [pid 7376] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 7383 attached [pid 7382] <... chdir resumed>) = 0 [pid 7376] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4993] <... clone resumed>, child_tidptr=0x555556cac5d0) = 7383 [pid 7383] chdir("./200" [pid 7382] prctl(PR_SET_PDEATHSIG, SIGKILL [ 199.974422][ T7381] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 200.013988][ T7379] loop5: detected capacity change from 0 to 4096 [pid 7380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7383] <... chdir resumed>) = 0 [pid 7382] <... prctl resumed>) = 0 [pid 7376] <... pwritev2 resumed>) = 65007 [pid 7383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 7382] setpgid(0, 0 [pid 7376] exit_group(0 [pid 7383] <... prctl resumed>) = 0 [pid 7382] <... setpgid resumed>) = 0 [pid 7376] <... exit_group resumed>) = ? [pid 7383] setpgid(0, 0 [pid 7382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7383] <... setpgid resumed>) = 0 [pid 7382] <... openat resumed>) = 3 [pid 7380] <... write resumed>) = 2097152 [pid 7376] +++ exited with 0 +++ [pid 7383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 7382] write(3, "1000", 4 [pid 7383] <... openat resumed>) = 3 [pid 7382] <... write resumed>) = 4 [pid 7383] write(3, "1000", 4 [pid 7382] close(3 [pid 7383] <... write resumed>) = 4 [pid 7382] <... close resumed>) = 0 [pid 7383] close(3 [pid 7382] symlink("/dev/binderfs", "./binderfs" [pid 7383] <... close resumed>) = 0 [pid 7382] <... symlink resumed>) = 0 [pid 7383] symlink("/dev/binderfs", "./binderfs" [pid 7382] memfd_create("syzkaller", 0 [pid 7383] <... symlink resumed>) = 0 [pid 7382] <... memfd_create resumed>) = 3 [pid 4996] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7376, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 7383] memfd_create("syzkaller", 0 [pid 7382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7383] <... memfd_create resumed>) = 3 [pid 7382] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 7380] munmap(0x7f46b9f9b000, 2097152 [pid 7383] <... mmap resumed>) = 0x7f46b9f9b000 [pid 7380] <... munmap resumed>) = 0 [pid 7382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7380] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 4996] umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7380] <... openat resumed>) = 4 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7380] ioctl(4, LOOP_SET_FD, 3 [ 200.068830][ T7379] NILFS (loop5): invalid segment: Checksum error in segment payload [ 200.083236][ T7379] NILFS (loop5): trying rollback from an earlier position [ 200.102825][ T7379] NILFS (loop5): recovery complete [pid 4996] openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4996] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 4996] getdents64(3, 0x555556cad620 /* 4 entries */, 32768) = 112 [pid 4996] umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4996] lstat("./198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 7379] <... mount resumed>) = 0 [pid 7379] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 4996] unlink("./198/binderfs" [pid 7379] <... openat resumed>) = 3 [pid 4996] <... unlink resumed>) = 0 [pid 7379] chdir("./file0" [pid 4996] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7379] <... chdir resumed>) = 0 [pid 7379] ioctl(4, LOOP_CLR_FD) = 0 [pid 7379] close(4 [pid 7383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 7382] <... write resumed>) = 2097152 [pid 7380] <... ioctl resumed>) = 0 [pid 7379] <... close resumed>) = 0 [pid 7382] munmap(0x7f46b9f9b000, 2097152 [pid 7380] close(3 [pid 7379] creat("./bus", 000 [pid 7382] <... munmap resumed>) = 0 [pid 7380] <... close resumed>) = 0 [pid 7382] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 7380] mkdir("./file0", 0777 [pid 7382] <... openat resumed>) = 4 [pid 7380] <... mkdir resumed>) = 0 [pid 7379] <... creat resumed>) = 4 [pid 7382] ioctl(4, LOOP_SET_FD, 3 [ 200.118742][ T7380] loop4: detected capacity change from 0 to 4096 [ 200.126222][ T7384] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 7380] mount("/dev/loop4", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7379] unlink("./bus" [pid 7383] <... write resumed>) = 2097152 [pid 7382] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = 0 [pid 7383] munmap(0x7f46b9f9b000, 2097152 [pid 7382] close(3 [pid 4996] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7383] <... munmap resumed>) = 0 [pid 7382] <... close resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7383] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 7382] mkdir("./file0", 0777 [pid 4996] lstat("./198/file0", [pid 7383] <... openat resumed>) = 4 [pid 7382] <... mkdir resumed>) = 0 [pid 7379] <... unlink resumed>) = 0 [pid 4996] <... lstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7383] ioctl(4, LOOP_SET_FD, 3 [pid 7382] mount("/dev/loop1", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 7379] pwritev2(4, [{iov_base="\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=65007}], 1, 117443584, 0 [pid 4996] umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 7383] <... ioctl resumed>) = 0 [pid 4996] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 7383] close(3 [pid 4996] openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 7383] <... close resumed>) = 0 [ 200.174062][ T7382] loop1: detected capacity change from 0 to 4096 [ 200.185548][ T7380] NILFS (loop4): invalid segment: Checksum error in segment payload [ 200.195018][ T7380] NILFS (loop4): trying rollback from an earlier position [ 200.196647][ T7383] loop0: detected capacity change from 0 to 4096 [ 200.211920][ T7380] NILFS (loop4): recovery complete [pid 7383] mkdir("./file0", 0777) = 0 [pid 7383] mount("/dev/loop0", "./file0", "nilfs2", MS_NOEXEC|MS_SYNCHRONOUS|MS_POSIXACL, "" [pid 4996] fstat(4, [pid 7379] <... pwritev2 resumed>) = 65007 [pid 4996] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 7379] exit_group(0 [pid 4996] getdents64(4, [pid 7379] <... exit_group resumed>) = ? [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 2 entries */, 32768) = 48 [pid 7380] <... mount resumed>) = 0 [pid 4996] getdents64(4, [pid 7380] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 7380] chdir("./file0") = 0 [pid 7380] ioctl(4, LOOP_CLR_FD) = 0 [pid 7380] close(4) = 0 [pid 7380] creat("./bus", 000) = 4 [pid 4996] <... getdents64 resumed>0x555556cb5660 /* 0 entries */, 32768) = 0 [pid 7380] unlink("./bus" [pid 7379] +++ exited with 0 +++ [ 200.222885][ T7382] NILFS (loop1): invalid segment: Checksum error in segment payload [ 200.232341][ T7382] NILFS (loop1): trying rollback from an earlier position [ 200.244302][ T7385] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 200.253056][ T7383] NILFS (loop0): invalid segment: Checksum error in segment payload [ 200.263636][ T7383] NILFS (loop0): trying rollback from an earlier position [pid 4996] close(4 [pid 4998] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=7379, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 4998] umount2("./199", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 4998] openat(AT_FDCWD, "./199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4998] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 200.278999][ T7382] NILFS (loop1): recovery complete [ 200.284222][ C0] ================================================================== [ 200.284236][ C0] BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2070 [ 200.284280][ C0] Read of size 8 at addr ffff888027bd0a00 by task syz-executor886/7382 [ 200.284296][ C0] [ 200.284301][ C0] CPU: 0 PID: 7382 Comm: syz-executor886 Not tainted 6.4.0-rc5-syzkaller-00245-g64569520920a #0 [ 200.284320][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 200.284330][ C0] Call Trace: [ 200.284336][ C0] [ 200.284343][ C0] dump_stack_lvl+0x1e7/0x2d0 [ 200.284366][ C0] ? irq_work_queue+0xca/0x150 [ 200.284388][ C0] ? nf_tcp_handle_invalid+0x650/0x650 [ 200.284413][ C0] ? panic+0x770/0x770 [ 200.284435][ C0] ? _printk+0xd5/0x120 [ 200.284458][ C0] print_report+0x163/0x540 [ 200.284481][ C0] ? _find_first_zero_bit+0xd4/0x100 [ 200.284498][ C0] ? __virt_addr_valid+0x22f/0x2e0 [ 200.284521][ C0] ? __phys_addr+0xba/0x170 [ 200.284542][ C0] ? __lock_acquire+0x77/0x2070 [ 200.284562][ C0] kasan_report+0x176/0x1b0 [ 200.284581][ C0] ? __lock_acquire+0x77/0x2070 [ 200.284605][ C0] __lock_acquire+0x77/0x2070 [ 200.284626][ C0] ? reacquire_held_locks+0x660/0x660 [ 200.284647][ C0] ? stack_trace_snprint+0xf0/0xf0 [ 200.284668][ C0] ? reacquire_held_locks+0x660/0x660 [ 200.284690][ C0] lock_acquire+0x1e3/0x520 [ 200.284708][ C0] ? try_to_wake_up+0xb2/0x1230 [ 200.284727][ C0] ? lockdep_lock+0x2b0/0x2b0 [ 200.284746][ C0] ? read_lock_is_recursive+0x20/0x20 [ 200.284767][ C0] ? mark_lock+0x9a/0x340 [ 200.284789][ C0] ? __lock_acquire+0x1316/0x2070 [ 200.284812][ C0] _raw_spin_lock_irqsave+0xd5/0x120 [ 200.284828][ C0] ? try_to_wake_up+0xb2/0x1230 [ 200.284845][ C0] ? _raw_spin_lock+0x40/0x40 [ 200.284866][ C0] try_to_wake_up+0xb2/0x1230 [ 200.284885][ C0] ? read_lock_is_recursive+0x20/0x20 [ 200.284905][ C0] ? cpu_curr_snapshot+0xd0/0xd0 [ 200.284930][ C0] call_timer_fn+0x178/0x580 [ 200.284950][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.284967][ C0] ? __run_timers+0x860/0x860 [ 200.284990][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 200.285008][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.285023][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 200.285043][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.285058][ C0] __run_timers+0x64f/0x860 [ 200.285081][ C0] ? detach_timer+0x2f0/0x2f0 [ 200.285101][ C0] ? print_irqtrace_events+0x220/0x220 [ 200.285125][ C0] run_timer_softirq+0x67/0xf0 [ 200.285144][ C0] __do_softirq+0x2ab/0x908 [ 200.285164][ C0] ? __irq_exit_rcu+0x159/0x240 [ 200.285186][ C0] ? __lock_text_end+0xc/0xc [ 200.285203][ C0] ? hrtimer_interrupt+0x76f/0x980 [ 200.285225][ C0] ? irqtime_account_irq+0xd4/0x1e0 [ 200.285251][ C0] __irq_exit_rcu+0x159/0x240 [ 200.285271][ C0] ? irq_exit_rcu+0x20/0x20 [ 200.285295][ C0] irq_exit_rcu+0x9/0x20 [ 200.285313][ C0] sysvec_apic_timer_interrupt+0x95/0xb0 [ 200.285333][ C0] [ 200.285339][ C0] [ 200.285345][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 200.285367][ C0] RIP: 0010:console_flush_all+0x8a7/0xd70 [ 200.285392][ C0] Code: cd f9 ff ff e8 7a b3 1c 00 0f 0b e9 87 fa ff ff e8 6e b3 1c 00 e8 d9 d2 40 09 4d 85 f6 74 c6 e8 5f b3 1c 00 fb 4c 8b 74 24 68 <48> 8b 44 24 70 42 0f b6 04 20 84 c0 0f 85 16 02 00 00 48 8b 44 24 [ 200.285416][ C0] RSP: 0018:ffffc9000c47f3a0 EFLAGS: 00000293 [ 200.285435][ C0] RAX: ffffffff816ecc41 RBX: 0000000000000000 RCX: ffff88802d4d3b80 [ 200.285448][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 200.285459][ C0] RBP: ffffc9000c47f550 R08: ffffffff816ecbee R09: fffffbfff206544d [ 200.285473][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 200.285485][ C0] R13: 0000000000000001 R14: ffffffff8d655618 R15: ffffffff8d6555c0 [ 200.285499][ C0] ? console_flush_all+0x84e/0xd70 [ 200.285523][ C0] ? console_flush_all+0x8a1/0xd70 [ 200.285557][ C0] ? is_console_locked+0x20/0x20 [ 200.285579][ C0] ? vprintk_emit+0xbc/0x1f0 [ 200.285601][ C0] ? vprintk_emit+0xbc/0x1f0 [ 200.285623][ C0] ? console_trylock+0x70/0x70 [ 200.285651][ C0] console_unlock+0xff/0x270 [ 200.285675][ C0] ? console_trylock_spinning+0x460/0x460 [ 200.285703][ C0] vprintk_emit+0xd5/0x1f0 [ 200.285728][ C0] _printk+0xd5/0x120 [ 200.285749][ C0] ? __nilfs_msg+0x215/0x410 [ 200.285773][ C0] ? panic+0x770/0x770 [ 200.285791][ C0] ? _raw_spin_unlock+0x28/0x40 [ 200.285809][ C0] __nilfs_msg+0x34d/0x410 [ 200.285830][ C0] ? load_nilfs+0x991/0x1050 [ 200.285850][ C0] ? _compound_head+0x130/0x130 [ 200.285873][ C0] ? nilfs_sysfs_create_device_group+0x525/0x5c0 [ 200.285896][ C0] load_nilfs+0x893/0x1050 [ 200.285921][ C0] ? destroy_nilfs+0xf0/0xf0 [ 200.285940][ C0] ? init_nilfs+0x320/0x760 [ 200.285961][ C0] ? __init_rwsem+0x122/0x160 [ 200.285980][ C0] nilfs_fill_super+0x2b5/0x600 [ 200.286005][ C0] ? nilfs_set_bdev_super+0xb0/0xb0 [ 200.286029][ C0] ? sb_set_blocksize+0x99/0x100 [ 200.286049][ C0] nilfs_mount+0x67d/0x9a0 [ 200.286075][ C0] ? nilfs_checkpoint_is_mounted+0x1b0/0x1b0 [ 200.286100][ C0] ? security_fs_context_parse_param+0xb4/0xe0 [ 200.286123][ C0] ? vfs_parse_fs_string+0x190/0x230 [ 200.286145][ C0] ? kfree+0x31/0x1a0 [ 200.286163][ C0] ? vfs_parse_fs_string+0x190/0x230 [ 200.286185][ C0] ? vfs_parse_fs_param+0x410/0x410 [ 200.286207][ C0] ? cap_capable+0x1b4/0x240 [ 200.286226][ C0] legacy_get_tree+0xef/0x190 [ 200.286246][ C0] ? nilfs_checkpoint_is_mounted+0x1b0/0x1b0 [ 200.286272][ C0] vfs_get_tree+0x8c/0x270 [ 200.286292][ C0] do_new_mount+0x28f/0xae0 [ 200.286313][ C0] ? path_mount+0x5f2/0xf80 [ 200.286329][ C0] ? do_move_mount_old+0x170/0x170 [ 200.286351][ C0] ? user_path_at_empty+0x12f/0x180 [ 200.286369][ C0] __se_sys_mount+0x2d9/0x3c0 [ 200.286391][ C0] ? __x64_sys_mount+0xc0/0xc0 [ 200.286418][ C0] ? syscall_enter_from_user_mode+0x32/0x230 [ 200.286439][ C0] ? __x64_sys_mount+0x20/0xc0 [ 200.286457][ C0] do_syscall_64+0x41/0xc0 [ 200.286473][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 200.286492][ C0] RIP: 0033:0x7f46c23e9eda [ 200.286507][ C0] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 200.286521][ C0] RSP: 002b:00007ffdd889e678 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 200.286541][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f46c23e9eda [ 200.286553][ C0] RDX: 0000000020000dc0 RSI: 0000000020000100 RDI: 00007ffdd889e690 [ 200.286566][ C0] RBP: 00007ffdd889e690 R08: 00007ffdd889e6d0 R09: 0000000000000da0 [ 200.286578][ C0] R10: 0000000000010018 R11: 0000000000000286 R12: 0000000000000004 [ 200.286589][ C0] R13: 0000555556cac2c0 R14: 0000000000010018 R15: 00007ffdd889e6d0 [ 200.286608][ C0] [ 200.286614][ C0] [ 200.286618][ C0] Allocated by task 2: [ 200.286626][ C0] kasan_set_track+0x4f/0x70 [ 200.286645][ C0] __kasan_slab_alloc+0x66/0x70 [ 200.286664][ C0] slab_post_alloc_hook+0x68/0x3a0 [ 200.286680][ C0] kmem_cache_alloc_node+0x157/0x350 [ 200.286694][ C0] dup_task_struct+0x57/0x7d0 [ 200.286713][ C0] copy_process+0x5c8/0x4290 [ 200.286731][ C0] kernel_clone+0x222/0x800 [ 200.286750][ C0] kernel_thread+0x1bc/0x230 [ 200.286767][ C0] kthreadd+0x600/0x820 [ 200.286785][ C0] ret_from_fork+0x1f/0x30 [ 200.286805][ C0] [ 200.286809][ C0] Last potentially related work creation: [ 200.286815][ C0] kasan_save_stack+0x3f/0x60 [ 200.286832][ C0] __kasan_record_aux_stack+0xb0/0xc0 [ 200.286854][ C0] call_rcu+0x167/0xa70 [ 200.286866][ C0] __schedule+0x1883/0x4900 [ 200.286886][ C0] schedule+0xc3/0x180 [ 200.286905][ C0] nilfs_detach_log_writer+0x2ea/0xbb0 [ 200.286927][ C0] nilfs_put_super+0x4d/0x160 [ 200.286939][ C0] generic_shutdown_super+0x134/0x340 [ 200.286953][ C0] kill_block_super+0x84/0xf0 [ 200.286968][ C0] deactivate_locked_super+0xa4/0x110 [ 200.286982][ C0] cleanup_mnt+0x426/0x4c0 [ 200.286998][ C0] task_work_run+0x24a/0x300 [ 200.287009][ C0] ptrace_notify+0x2cd/0x380 [ 200.287024][ C0] syscall_exit_to_user_mode+0x157/0x280 [ 200.287042][ C0] do_syscall_64+0x4d/0xc0 [ 200.287056][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 200.287074][ C0] [ 200.287078][ C0] Second to last potentially related work creation: [ 200.287084][ C0] kasan_save_stack+0x3f/0x60 [ 200.287101][ C0] __kasan_record_aux_stack+0xb0/0xc0 [ 200.287122][ C0] call_rcu+0x167/0xa70 [ 200.287135][ C0] release_task+0x15ad/0x16f0 [ 200.287149][ C0] wait_consider_task+0x1a43/0x2e20 [ 200.287166][ C0] do_wait+0x312/0xb00 [ 200.287181][ C0] kernel_wait4+0x2a2/0x3e0 [ 200.287196][ C0] __x64_sys_wait4+0x134/0x1e0 [ 200.287211][ C0] do_syscall_64+0x41/0xc0 [ 200.287225][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 200.287244][ C0] [ 200.287247][ C0] The buggy address belongs to the object at ffff888027bd0000 [ 200.287247][ C0] which belongs to the cache task_struct of size 7360 [ 200.287262][ C0] The buggy address is located 2560 bytes inside of [ 200.287262][ C0] freed 7360-byte region [ffff888027bd0000, ffff888027bd1cc0) [ 200.287280][ C0] [ 200.287284][ C0] The buggy address belongs to the physical page: [ 200.287291][ C0] page:ffffea00009ef400 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888027bd0000 pfn:0x27bd0 [ 200.287313][ C0] head:ffffea00009ef400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 200.287329][ C0] anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 200.287345][ C0] page_type: 0xffffffff() [ 200.287359][ C0] raw: 00fff00000010200 ffff888140007500 0000000000000000 dead000000000001 [ 200.287373][ C0] raw: ffff888027bd0000 0000000080040003 00000001ffffffff 0000000000000000 [ 200.287382][ C0] page dumped because: kasan: bad access detected [ 200.287391][ C0] page_owner tracks the page as allocated [ 200.287396][ C0] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 47, tgid 47 (kworker/u4:3), ts 9536795505, free_ts 0 [ 200.287434][ C0] post_alloc_hook+0x1e6/0x210 [ 200.287453][ C0] get_page_from_freelist+0x321c/0x33a0 [ 200.287472][ C0] __alloc_pages+0x255/0x670 [ 200.287489][ C0] alloc_slab_page+0x6a/0x160 [ 200.287505][ C0] new_slab+0x84/0x2f0 [ 200.287519][ C0] ___slab_alloc+0xa85/0x10a0 [ 200.287534][ C0] kmem_cache_alloc_node+0x1f3/0x350 [ 200.287548][ C0] dup_task_struct+0x57/0x7d0 [ 200.287566][ C0] copy_process+0x5c8/0x4290 [ 200.287584][ C0] kernel_clone+0x222/0x800 [ 200.287602][ C0] user_mode_thread+0x132/0x190 [ 200.287618][ C0] call_usermodehelper_exec_work+0x5c/0x220 [ 200.287634][ C0] process_one_work+0x8a0/0x10e0 [ 200.287651][ C0] worker_thread+0xa63/0x1210 [ 200.287670][ C0] kthread+0x2b8/0x350 [ 200.287685][ C0] ret_from_fork+0x1f/0x30 [ 200.287704][ C0] page_owner free stack trace missing [ 200.287709][ C0] [ 200.287713][ C0] Memory state around the buggy address: [ 200.287720][ C0] ffff888027bd0900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 200.287731][ C0] ffff888027bd0980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 200.287742][ C0] >ffff888027bd0a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 200.287751][ C0] ^ [ 200.287759][ C0] ffff888027bd0a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 200.287770][ C0] ffff888027bd0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 200.287777][ C0] ================================================================== [ 200.287785][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 200.287793][ C0] CPU: 0 PID: 7382 Comm: syz-executor886 Not tainted 6.4.0-rc5-syzkaller-00245-g64569520920a #0 [ 200.287811][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 200.287820][ C0] Call Trace: [ 200.287824][ C0] [ 200.287831][ C0] dump_stack_lvl+0x1e7/0x2d0 [ 200.287848][ C0] ? nf_tcp_handle_invalid+0x650/0x650 [ 200.287863][ C0] ? panic+0x770/0x770 [ 200.287880][ C0] ? lock_release+0xbf/0x9d0 [ 200.287902][ C0] ? vscnprintf+0x5d/0x80 [ 200.287923][ C0] panic+0x30f/0x770 [ 200.287941][ C0] ? check_panic_on_warn+0x21/0xa0 [ 200.287963][ C0] ? __memcpy_flushcache+0x2b0/0x2b0 [ 200.287983][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 200.288001][ C0] ? _raw_spin_unlock+0x40/0x40 [ 200.288017][ C0] ? print_report+0x4fb/0x540 [ 200.288039][ C0] check_panic_on_warn+0x82/0xa0 [ 200.288061][ C0] ? __lock_acquire+0x77/0x2070 [ 200.288081][ C0] end_report+0x63/0x110 [ 200.288101][ C0] kasan_report+0x183/0x1b0 [ 200.288121][ C0] ? __lock_acquire+0x77/0x2070 [ 200.288145][ C0] __lock_acquire+0x77/0x2070 [ 200.288166][ C0] ? reacquire_held_locks+0x660/0x660 [ 200.288189][ C0] ? stack_trace_snprint+0xf0/0xf0 [ 200.288213][ C0] ? reacquire_held_locks+0x660/0x660 [ 200.288234][ C0] lock_acquire+0x1e3/0x520 [ 200.288253][ C0] ? try_to_wake_up+0xb2/0x1230 [ 200.288272][ C0] ? lockdep_lock+0x2b0/0x2b0 [ 200.288291][ C0] ? read_lock_is_recursive+0x20/0x20 [ 200.288315][ C0] ? mark_lock+0x9a/0x340 [ 200.288336][ C0] ? __lock_acquire+0x1316/0x2070 [ 200.288358][ C0] _raw_spin_lock_irqsave+0xd5/0x120 [ 200.288375][ C0] ? try_to_wake_up+0xb2/0x1230 [ 200.288393][ C0] ? _raw_spin_lock+0x40/0x40 [ 200.288422][ C0] try_to_wake_up+0xb2/0x1230 [ 200.288441][ C0] ? read_lock_is_recursive+0x20/0x20 [ 200.288463][ C0] ? cpu_curr_snapshot+0xd0/0xd0 [ 200.288487][ C0] call_timer_fn+0x178/0x580 [ 200.288505][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.288522][ C0] ? __run_timers+0x860/0x860 [ 200.288543][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 200.288561][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.288576][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 200.288596][ C0] ? nilfs_iput_work_func+0x70/0x70 [ 200.288612][ C0] __run_timers+0x64f/0x860 [ 200.288633][ C0] ? detach_timer+0x2f0/0x2f0 [ 200.288651][ C0] ? print_irqtrace_events+0x220/0x220 [ 200.288675][ C0] run_timer_softirq+0x67/0xf0 [ 200.288693][ C0] __do_softirq+0x2ab/0x908 [ 200.288714][ C0] ? __irq_exit_rcu+0x159/0x240 [ 200.288735][ C0] ? __lock_text_end+0xc/0xc [ 200.288752][ C0] ? hrtimer_interrupt+0x76f/0x980 [ 200.288773][ C0] ? irqtime_account_irq+0xd4/0x1e0 [ 200.288796][ C0] __irq_exit_rcu+0x159/0x240 [ 200.288815][ C0] ? irq_exit_rcu+0x20/0x20 [ 200.288836][ C0] irq_exit_rcu+0x9/0x20 [ 200.288853][ C0] sysvec_apic_timer_interrupt+0x95/0xb0 [ 200.288873][ C0] [ 200.288878][ C0] [ 200.288884][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 200.288905][ C0] RIP: 0010:console_flush_all+0x8a7/0xd70 [ 200.288927][ C0] Code: cd f9 ff ff e8 7a b3 1c 00 0f 0b e9 87 fa ff ff e8 6e b3 1c 00 e8 d9 d2 40 09 4d 85 f6 74 c6 e8 5f b3 1c 00 fb 4c 8b 74 24 68 <48> 8b 44 24 70 42 0f b6 04 20 84 c0 0f 85 16 02 00 00 48 8b 44 24 [ 200.288941][ C0] RSP: 0018:ffffc9000c47f3a0 EFLAGS: 00000293 [ 200.288956][ C0] RAX: ffffffff816ecc41 RBX: 0000000000000000 RCX: ffff88802d4d3b80 [ 200.288968][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 200.288978][ C0] RBP: ffffc9000c47f550 R08: ffffffff816ecbee R09: fffffbfff206544d [ 200.288990][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 200.289000][ C0] R13: 0000000000000001 R14: ffffffff8d655618 R15: ffffffff8d6555c0 [ 200.289014][ C0] ? console_flush_all+0x84e/0xd70 [ 200.289035][ C0] ? console_flush_all+0x8a1/0xd70 [ 200.289069][ C0] ? is_console_locked+0x20/0x20 [ 200.289089][ C0] ? vprintk_emit+0xbc/0x1f0 [ 200.289110][ C0] ? vprintk_emit+0xbc/0x1f0 [ 200.289131][ C0] ? console_trylock+0x70/0x70 [ 200.289157][ C0] console_unlock+0xff/0x270 [ 200.289180][ C0] ? console_trylock_spinning+0x460/0x460 [ 200.289206][ C0] vprintk_emit+0xd5/0x1f0 [ 200.289229][ C0] _printk+0xd5/0x120 [ 200.289250][ C0] ? __nilfs_msg+0x215/0x410 [ 200.289272][ C0] ? panic+0x770/0x770 [ 200.289292][ C0] ? _raw_spin_unlock+0x28/0x40 [ 200.289312][ C0] __nilfs_msg+0x34d/0x410 [ 200.289335][ C0] ? load_nilfs+0x991/0x1050 [ 200.289356][ C0] ? _compound_head+0x130/0x130 [ 200.289383][ C0] ? nilfs_sysfs_create_device_group+0x525/0x5c0 [ 200.289413][ C0] load_nilfs+0x893/0x1050 [ 200.289440][ C0] ? destroy_nilfs+0xf0/0xf0 [ 200.289460][ C0] ? init_nilfs+0x320/0x760 [ 200.289485][ C0] ? __init_rwsem+0x122/0x160 [ 200.289506][ C0] nilfs_fill_super+0x2b5/0x600 [ 200.289532][ C0] ? nilfs_set_bdev_super+0xb0/0xb0 [ 200.289558][ C0] ? sb_set_blocksize+0x99/0x100 [ 200.289576][ C0] nilfs_mount+0x67d/0x9a0 [ 200.289601][ C0] ? nilfs_checkpoint_is_mounted+0x1b0/0x1b0 [ 200.289625][ C0] ? security_fs_context_parse_param+0xb4/0xe0 [ 200.289647][ C0] ? vfs_parse_fs_string+0x190/0x230 [ 200.289668][ C0] ? kfree+0x31/0x1a0 [ 200.289685][ C0] ? vfs_parse_fs_string+0x190/0x230 [ 200.289708][ C0] ? vfs_parse_fs_param+0x410/0x410 [ 200.289729][ C0] ? cap_capable+0x1b4/0x240 [ 200.289747][ C0] legacy_get_tree+0xef/0x190 [ 200.289769][ C0] ? nilfs_checkpoint_is_mounted+0x1b0/0x1b0 [ 200.289794][ C0] vfs_get_tree+0x8c/0x270 [ 200.289815][ C0] do_new_mount+0x28f/0xae0 [ 200.289836][ C0] ? path_mount+0x5f2/0xf80 [ 200.289853][ C0] ? do_move_mount_old+0x170/0x170 [ 200.289873][ C0] ? user_path_at_empty+0x12f/0x180 [ 200.289890][ C0] __se_sys_mount+0x2d9/0x3c0 [ 200.289910][ C0] ? __x64_sys_mount+0xc0/0xc0 [ 200.289929][ C0] ? syscall_enter_from_user_mode+0x32/0x230 [ 200.289950][ C0] ? __x64_sys_mount+0x20/0xc0 [ 200.289970][ C0] do_syscall_64+0x41/0xc0 [ 200.289987][ C0] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 200.290006][ C0] RIP: 0033:0x7f46c23e9eda [ 200.290019][ C0] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 200.290033][ C0] RSP: 002b:00007ffdd889e678 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 200.290051][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f46c23e9eda [ 200.290062][ C0] RDX: 0000000020000dc0 RSI: 0000000020000100 RDI: 00007ffdd889e690 [ 200.290072][ C0] RBP: 00007ffdd889e690 R08: 00007ffdd889e6d0 R09: 0000000000000da0 [ 200.290083][ C0] R10: 0000000000010018 R11: 0000000000000286 R12: 0000000000000004 [ 200.290094][ C0] R13: 0000555556cac2c0 R14: 0000000000010018 R15: 00007ffdd889e6d0 [ 200.290112][ C0] [ 200.290283][ C0] Kernel Offset: disabled [ 202.082324][ C0] Rebooting in 86400 seconds..