./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2540567017 <...> Warning: Permanently added '10.128.0.185' (ED25519) to the list of known hosts. execve("./syz-executor2540567017", ["./syz-executor2540567017"], 0x7ffd13fd9ac0 /* 10 vars */) = 0 brk(NULL) = 0x55559014a000 brk(0x55559014ad00) = 0x55559014ad00 arch_prctl(ARCH_SET_FS, 0x55559014a380) = 0 set_tid_address(0x55559014a650) = 5073 set_robust_list(0x55559014a660, 24) = 0 rseq(0x55559014aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2540567017", 4096) = 28 getrandom("\xd0\x0c\x0f\xcb\xc0\x60\xbf\xe9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55559014ad00 brk(0x55559016bd00) = 0x55559016bd00 brk(0x55559016c000) = 0x55559016c000 mprotect(0x7f96143e0000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5074 ./strace-static-x86_64: Process 5074 attached [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] set_robust_list(0x55559014a660, 24) = 0 ./strace-static-x86_64: Process 5075 attached [pid 5074] mkdir("./syzkaller.Ccaurn", 0700 [pid 5073] <... clone resumed>, child_tidptr=0x55559014a650) = 5075 [pid 5075] set_robust_list(0x55559014a660, 24) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] mkdir("./syzkaller.fv6iSS", 0700 [pid 5074] <... mkdir resumed>) = 0 [pid 5074] chmod("./syzkaller.Ccaurn", 0777) = 0 [pid 5074] chdir("./syzkaller.Ccaurn"./strace-static-x86_64: Process 5076 attached [pid 5075] <... mkdir resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x55559014a650) = 5076 [pid 5076] set_robust_list(0x55559014a660, 24 [pid 5075] chmod("./syzkaller.fv6iSS", 0777 [pid 5074] <... chdir resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] <... chmod resumed>) = 0 ./strace-static-x86_64: Process 5077 attached [pid 5074] mkdir("./0", 0777 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5075] chdir("./syzkaller.fv6iSS" [pid 5073] <... clone resumed>, child_tidptr=0x55559014a650) = 5077 [pid 5077] set_robust_list(0x55559014a660, 24) = 0 [pid 5076] mkdir("./syzkaller.1DUU5r", 0700 [pid 5075] <... chdir resumed>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] mkdir("./syzkaller.KkBgaI", 0700 [pid 5075] mkdir("./0", 0777 [pid 5076] <... mkdir resumed>) = 0 [pid 5074] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5078 attached [pid 5076] chmod("./syzkaller.1DUU5r", 0777 [pid 5075] <... mkdir resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] set_robust_list(0x55559014a660, 24 [pid 5073] <... clone resumed>, child_tidptr=0x55559014a650) = 5078 [pid 5077] <... mkdir resumed>) = 0 [pid 5076] <... chmod resumed>) = 0 [pid 5077] chmod("./syzkaller.KkBgaI", 0777 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5077] <... chmod resumed>) = 0 [pid 5076] chdir("./syzkaller.1DUU5r" [pid 5074] <... openat resumed>) = 3 [pid 5076] <... chdir resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5077] chdir("./syzkaller.KkBgaI") = 0 [pid 5078] mkdir("./syzkaller.oxm3BO", 0700 [pid 5077] mkdir("./0", 0777 [pid 5076] mkdir("./0", 0777 [pid 5075] <... openat resumed>) = 3 [pid 5074] ioctl(3, LOOP_CLR_FD [pid 5077] <... mkdir resumed>) = 0 [pid 5076] <... mkdir resumed>) = 0 [pid 5074] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5078] <... mkdir resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5074] close(3 [pid 5078] chmod("./syzkaller.oxm3BO", 0777 [pid 5077] <... openat resumed>) = 3 [pid 5078] <... chmod resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5075] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5074] <... close resumed>) = 0 [pid 5077] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5075] close(3 [pid 5077] close(3 [pid 5076] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5075] <... close resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5080 attached [pid 5078] chdir("./syzkaller.oxm3BO" [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5082 attached ./strace-static-x86_64: Process 5079 attached ./strace-static-x86_64: Process 5081 attached [pid 5080] set_robust_list(0x55559014a660, 24 [pid 5078] mkdir("./0", 0777 [pid 5077] <... clone resumed>, child_tidptr=0x55559014a650) = 5081 [pid 5076] <... clone resumed>, child_tidptr=0x55559014a650) = 5080 [pid 5075] <... clone resumed>, child_tidptr=0x55559014a650) = 5079 [pid 5082] set_robust_list(0x55559014a660, 24 [pid 5079] set_robust_list(0x55559014a660, 24 [pid 5081] set_robust_list(0x55559014a660, 24 [pid 5080] <... set_robust_list resumed>) = 0 [pid 5078] <... mkdir resumed>) = 0 [pid 5074] <... clone resumed>, child_tidptr=0x55559014a650) = 5082 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5082] chdir("./0") = 0 [pid 5079] chdir("./0" [pid 5080] chdir("./0" [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] <... chdir resumed>) = 0 [pid 5082] <... prctl resumed>) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] <... prctl resumed>) = 0 [pid 5080] setpgid(0, 0 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] <... setpgid resumed>) = 0 [pid 5079] <... chdir resumed>) = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] setpgid(0, 0 [pid 5078] <... openat resumed>) = 3 [pid 5079] <... setpgid resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] chdir("./0" [pid 5082] <... openat resumed>) = 3 [pid 5079] <... openat resumed>) = 3 [pid 5080] <... openat resumed>) = 3 [pid 5081] <... chdir resumed>) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5079] write(3, "1000", 4 [pid 5078] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] write(3, "1000", 4 [pid 5079] <... write resumed>) = 4 [pid 5080] write(3, "1000", 4 [pid 5079] close(3) = 0 [pid 5082] <... write resumed>) = 4 [pid 5081] <... prctl resumed>) = 0 [pid 5080] <... write resumed>) = 4 [pid 5078] close(3 [pid 5082] close(3 [pid 5079] symlink("/dev/binderfs", "./binderfs" [pid 5081] setpgid(0, 0 [pid 5080] close(3 [pid 5078] <... close resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5081] <... setpgid resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5082] symlink("/dev/binderfs", "./binderfs" [pid 5079] <... symlink resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] symlink("/dev/binderfs", "./binderfs" [pid 5082] <... symlink resumed>) = 0 [pid 5081] <... openat resumed>) = 3 [pid 5080] <... symlink resumed>) = 0 [pid 5079] memfd_create("syzkaller", 0 [pid 5081] write(3, "1000", 4 [pid 5079] <... memfd_create resumed>) = 3 [pid 5081] <... write resumed>) = 4 [pid 5080] memfd_create("syzkaller", 0 [pid 5082] memfd_create("syzkaller", 0 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] close(3 [pid 5082] <... memfd_create resumed>) = 3 [pid 5079] <... mmap resumed>) = 0x7f960be00000 [pid 5081] <... close resumed>) = 0 [pid 5080] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 5084 attached [pid 5081] symlink("/dev/binderfs", "./binderfs" [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] <... symlink resumed>) = 0 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] set_robust_list(0x55559014a660, 24 [pid 5078] <... clone resumed>, child_tidptr=0x55559014a650) = 5084 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5082] <... mmap resumed>) = 0x7f960be00000 [pid 5080] <... mmap resumed>) = 0x7f960be00000 [pid 5084] chdir("./0" [pid 5081] memfd_create("syzkaller", 0) = 3 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] <... chdir resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5084] setpgid(0, 0 [pid 5081] <... mmap resumed>) = 0x7f960be00000 [pid 5084] <... setpgid resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5084] write(3, "1000", 4) = 4 [pid 5084] close(3) = 0 [pid 5084] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5084] memfd_create("syzkaller", 0) = 3 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5079] <... write resumed>) = 16777216 [pid 5079] munmap(0x7f960be00000, 138412032) = 0 [pid 5080] <... write resumed>) = 16777216 [pid 5080] munmap(0x7f960be00000, 138412032 [pid 5079] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5079] ioctl(4, LOOP_SET_FD, 3 [pid 5080] <... munmap resumed>) = 0 [pid 5084] <... write resumed>) = 16777216 [pid 5082] <... write resumed>) = 16777216 [pid 5080] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5084] munmap(0x7f960be00000, 138412032 [pid 5080] <... openat resumed>) = 4 [pid 5082] munmap(0x7f960be00000, 138412032 [pid 5080] ioctl(4, LOOP_SET_FD, 3 [pid 5079] <... ioctl resumed>) = 0 [pid 5080] <... ioctl resumed>) = 0 [pid 5079] close(3) = 0 [pid 5079] close(4) = 0 [pid 5079] mkdir("./file0", 0777) = 0 [pid 5084] <... munmap resumed>) = 0 [pid 5081] <... write resumed>) = 16777216 [pid 5079] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5081] munmap(0x7f960be00000, 138412032 [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 57.628042][ T5079] loop1: detected capacity change from 0 to 32768 [ 57.638448][ T5080] loop2: detected capacity change from 0 to 32768 [pid 5084] ioctl(4, LOOP_SET_FD, 3 [pid 5082] <... munmap resumed>) = 0 [pid 5080] close(3) = 0 [pid 5084] <... ioctl resumed>) = 0 [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5079] <... mount resumed>) = 0 [pid 5081] <... munmap resumed>) = 0 [pid 5080] close(4 [pid 5084] close(3 [pid 5082] <... openat resumed>) = 4 [pid 5079] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5081] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5080] <... close resumed>) = 0 [pid 5079] <... openat resumed>) = 3 [pid 5081] <... openat resumed>) = 4 [ 57.672623][ T5084] loop4: detected capacity change from 0 to 32768 [pid 5080] mkdir("./file0", 0777 [pid 5084] <... close resumed>) = 0 [pid 5082] ioctl(4, LOOP_SET_FD, 3 [pid 5079] chdir("./file0" [pid 5081] ioctl(4, LOOP_SET_FD, 3 [pid 5080] <... mkdir resumed>) = 0 [pid 5079] <... chdir resumed>) = 0 [pid 5080] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5079] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5079] exit_group(0) = ? [pid 5084] close(4) = 0 [pid 5084] mkdir("./file0", 0777) = 0 [pid 5079] +++ exited with 0 +++ [pid 5075] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=23 /* 0.23 s */} --- [pid 5075] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5080] <... mount resumed>) = 0 [pid 5075] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5084] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5081] <... ioctl resumed>) = 0 [pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5075] <... openat resumed>) = 3 [pid 5081] close(3 [pid 5080] <... openat resumed>) = 3 [pid 5075] newfstatat(3, "", [pid 5081] <... close resumed>) = 0 [pid 5080] chdir("./file0" [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5081] close(4 [pid 5080] <... chdir resumed>) = 0 [pid 5075] getdents64(3, [pid 5081] <... close resumed>) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5075] <... getdents64 resumed>0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5081] mkdir("./file0", 0777 [pid 5080] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5075] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] <... mkdir resumed>) = 0 [pid 5080] exit_group(0 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5080] <... exit_group resumed>) = ? [pid 5075] unlink("./0/binderfs" [pid 5081] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5080] +++ exited with 0 +++ [pid 5075] <... unlink resumed>) = 0 [pid 5075] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=24 /* 0.24 s */} --- [pid 5082] <... ioctl resumed>) = 0 [pid 5076] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5081] <... mount resumed>) = 0 [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5084] <... mount resumed>) = 0 [pid 5082] close(3 [pid 5081] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5076] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5082] <... close resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5082] close(4 [pid 5076] newfstatat(3, "", [pid 5082] <... close resumed>) = 0 [pid 5081] <... openat resumed>) = 3 [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5082] mkdir("./file0", 0777 [pid 5081] chdir("./file0" [ 57.716990][ T5081] loop3: detected capacity change from 0 to 32768 [ 57.717413][ T5082] loop0: detected capacity change from 0 to 32768 [pid 5076] getdents64(3, [pid 5084] <... openat resumed>) = 3 [pid 5082] <... mkdir resumed>) = 0 [pid 5081] <... chdir resumed>) = 0 [pid 5076] <... getdents64 resumed>0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5084] chdir("./file0" [pid 5082] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5081] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5076] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5084] <... chdir resumed>) = 0 [pid 5081] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5081] exit_group(0 [pid 5084] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5081] <... exit_group resumed>) = ? [pid 5076] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5084] exit_group(0 [pid 5081] +++ exited with 0 +++ [pid 5076] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5084] <... exit_group resumed>) = ? [pid 5076] unlink("./0/binderfs" [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=10 /* 0.10 s */, si_stime=26 /* 0.26 s */} --- [pid 5076] <... unlink resumed>) = 0 [pid 5077] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] newfstatat(3, "", [pid 5084] +++ exited with 0 +++ [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] <... umount2 resumed>) = 0 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=9 /* 0.09 s */, si_stime=28 /* 0.28 s */} --- [pid 5077] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5078] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5078] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5077] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] unlink("./0/binderfs" [pid 5078] <... openat resumed>) = 3 [pid 5077] <... unlink resumed>) = 0 [pid 5075] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] newfstatat(3, "", [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5082] <... mount resumed>) = 0 [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] newfstatat(AT_FDCWD, "./0/file0", [pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5078] getdents64(3, [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... umount2 resumed>) = 0 [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5082] <... openat resumed>) = 3 [pid 5078] <... getdents64 resumed>0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5076] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5075] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5082] chdir("./file0" [pid 5078] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5082] <... chdir resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./0/file0", [pid 5075] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5077] <... umount2 resumed>) = 0 [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5075] <... openat resumed>) = 4 [pid 5078] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5082] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] unlink("./0/binderfs" [pid 5076] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5075] newfstatat(4, "", [pid 5078] <... unlink resumed>) = 0 [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5075] getdents64(4, [pid 5077] newfstatat(AT_FDCWD, "./0/file0", [pid 5076] <... openat resumed>) = 4 [pid 5075] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5082] exit_group(0 [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5076] newfstatat(4, "", [pid 5075] getdents64(4, [pid 5077] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] getdents64(4, [pid 5075] close(4 [pid 5077] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5076] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5075] <... close resumed>) = 0 [pid 5077] <... openat resumed>) = 4 [pid 5076] getdents64(4, [pid 5075] rmdir("./0/file0" [pid 5082] <... exit_group resumed>) = ? [pid 5077] newfstatat(4, "", [pid 5076] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] close(4 [pid 5077] getdents64(4, [pid 5076] <... close resumed>) = 0 [pid 5077] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5076] rmdir("./0/file0" [pid 5077] getdents64(4, [pid 5076] <... rmdir resumed>) = 0 [pid 5075] <... rmdir resumed>) = 0 [pid 5077] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] close(4) = 0 [pid 5077] rmdir("./0/file0") = 0 [pid 5075] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5082] +++ exited with 0 +++ [pid 5076] getdents64(3, [pid 5075] close(3 [pid 5077] getdents64(3, [pid 5076] <... getdents64 resumed>0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5075] <... close resumed>) = 0 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=31 /* 0.31 s */} --- [pid 5077] <... getdents64 resumed>0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5076] close(3 [pid 5075] rmdir("./0" [pid 5074] restart_syscall(<... resuming interrupted clone ...> [pid 5077] close(3 [pid 5074] <... restart_syscall resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5076] <... close resumed>) = 0 [pid 5075] <... rmdir resumed>) = 0 [pid 5078] <... umount2 resumed>) = 0 [pid 5077] rmdir("./0" [pid 5076] rmdir("./0" [pid 5077] <... rmdir resumed>) = 0 [pid 5074] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... rmdir resumed>) = 0 [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5074] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] mkdir("./1", 0777 [pid 5074] <... openat resumed>) = 3 [pid 5078] newfstatat(AT_FDCWD, "./0/file0", [pid 5075] <... mkdir resumed>) = 0 [pid 5074] newfstatat(3, "", [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] mkdir("./1", 0777 [pid 5076] mkdir("./1", 0777 [pid 5074] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] <... mkdir resumed>) = 0 [pid 5076] <... mkdir resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5074] getdents64(3, [pid 5078] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5074] <... getdents64 resumed>0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5078] <... openat resumed>) = 4 [pid 5075] <... openat resumed>) = 3 [pid 5074] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5076] <... openat resumed>) = 3 [pid 5074] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5078] newfstatat(4, "", [pid 5077] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5074] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] ioctl(3, LOOP_CLR_FD [pid 5074] unlink("./0/binderfs" [pid 5078] getdents64(4, [pid 5077] <... ioctl resumed>) = 0 [pid 5078] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5077] close(3 [pid 5078] getdents64(4, [pid 5077] <... close resumed>) = 0 [pid 5078] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] close(4 [pid 5074] <... unlink resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5074] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] rmdir("./0/file0") = 0 ./strace-static-x86_64: Process 5087 attached [pid 5074] <... umount2 resumed>) = 0 [pid 5078] getdents64(3, [pid 5087] set_robust_list(0x55559014a660, 24 [pid 5078] <... getdents64 resumed>0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5077] <... clone resumed>, child_tidptr=0x55559014a650) = 5087 [pid 5074] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5087] <... set_robust_list resumed>) = 0 [pid 5078] close(3 [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... close resumed>) = 0 [pid 5074] newfstatat(AT_FDCWD, "./0/file0", [pid 5087] chdir("./1" [pid 5078] rmdir("./0" [pid 5074] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5074] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5078] <... rmdir resumed>) = 0 [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5087] <... chdir resumed>) = 0 [pid 5074] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] <... openat resumed>) = 4 [pid 5087] setpgid(0, 0 [pid 5074] newfstatat(4, "", [pid 5087] <... setpgid resumed>) = 0 [pid 5074] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] mkdir("./1", 0777 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] getdents64(4, [pid 5087] <... openat resumed>) = 3 [pid 5078] <... mkdir resumed>) = 0 [pid 5074] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5074] getdents64(4, [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5074] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5087] memfd_create("syzkaller", 0) = 3 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5074] close(4) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5074] rmdir("./0/file0") = 0 [pid 5074] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5074] close(3) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5074] rmdir("./0" [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5074] <... rmdir resumed>) = 0 [pid 5074] mkdir("./1", 0777) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5074] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5089 ./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x55559014a660, 24 [pid 5075] <... ioctl resumed>) = 0 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5089] chdir("./1" [pid 5075] close(3) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x55559014a660, 24) = 0 [pid 5090] chdir("./1") = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs" [pid 5089] <... chdir resumed>) = 0 [pid 5090] <... symlink resumed>) = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] memfd_create("syzkaller", 0) = 3 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... ioctl resumed>) = 0 [pid 5089] <... openat resumed>) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs" [pid 5078] close(3 [pid 5089] <... symlink resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5091 attached [pid 5091] set_robust_list(0x55559014a660, 24) = 0 [pid 5091] chdir("./1") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55559014a650) = 5091 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] memfd_create("syzkaller", 0 [pid 5089] memfd_create("syzkaller", 0 [pid 5091] <... memfd_create resumed>) = 3 [pid 5089] <... memfd_create resumed>) = 3 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] <... mmap resumed>) = 0x7f960be00000 [pid 5089] <... mmap resumed>) = 0x7f960be00000 [pid 5074] <... ioctl resumed>) = 0 [pid 5074] close(3) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x55559014a660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x55559014a650) = 5092 [pid 5092] <... set_robust_list resumed>) = 0 [pid 5092] chdir("./1") = 0 [pid 5087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5087] <... write resumed>) = 16777216 [pid 5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5087] munmap(0x7f960be00000, 138412032) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5087] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5087] close(3) = 0 [pid 5087] close(4) = 0 [pid 5087] mkdir("./file0", 0777) = 0 [pid 5087] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [ 58.943506][ T5087] loop3: detected capacity change from 0 to 32768 [pid 5087] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5087] chdir("./file0") = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5087] exit_group(0) = ? [pid 5087] +++ exited with 0 +++ [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=21 /* 0.21 s */} --- [pid 5077] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5077] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] unlink("./1/binderfs") = 0 [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5077] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] close(4) = 0 [pid 5077] rmdir("./1/file0") = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3) = 0 [pid 5077] rmdir("./1") = 0 [pid 5077] mkdir("./2", 0777) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD) = 0 [pid 5077] close(3) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x55559014a660, 24 [pid 5077] <... clone resumed>, child_tidptr=0x55559014a650) = 5093 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5089] <... write resumed>) = 16777216 [pid 5093] chdir("./2") = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0 [pid 5089] munmap(0x7f960be00000, 138412032 [pid 5093] <... setpgid resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5093] memfd_create("syzkaller", 0) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5091] <... write resumed>) = 16777216 [pid 5089] <... munmap resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5091] munmap(0x7f960be00000, 138412032 [pid 5089] <... openat resumed>) = 4 [pid 5089] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5089] close(3) = 0 [pid 5089] close(4) = 0 [pid 5089] mkdir("./file0", 0777) = 0 [pid 5089] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5091] <... munmap resumed>) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5089] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5091] <... openat resumed>) = 4 [pid 5089] <... openat resumed>) = 3 [pid 5091] ioctl(4, LOOP_SET_FD, 3 [pid 5089] chdir("./file0") = 0 [ 59.219211][ T5089] loop2: detected capacity change from 0 to 32768 [pid 5089] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5091] <... ioctl resumed>) = 0 [pid 5090] <... write resumed>) = 16777216 [pid 5089] exit_group(0) = ? [pid 5091] close(3 [pid 5089] +++ exited with 0 +++ [pid 5091] <... close resumed>) = 0 [pid 5090] munmap(0x7f960be00000, 138412032 [pid 5091] close(4) = 0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=26 /* 0.26 s */} --- [pid 5091] mkdir("./file0", 0777 [pid 5076] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5076] newfstatat(3, "", [pid 5091] <... mkdir resumed>) = 0 [pid 5076] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5091] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5076] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5076] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5076] unlink("./1/binderfs") = 0 [pid 5076] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5091] <... mount resumed>) = 0 [ 59.266638][ T5091] loop4: detected capacity change from 0 to 32768 [pid 5091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5091] chdir("./file0") = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5091] exit_group(0) = ? [pid 5091] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=23 /* 0.23 s */} --- [pid 5090] <... munmap resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5078] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5090] <... openat resumed>) = 4 [pid 5078] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5090] ioctl(4, LOOP_SET_FD, 3 [pid 5078] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] unlink("./1/binderfs") = 0 [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5076] <... umount2 resumed>) = 0 [pid 5076] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5076] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5076] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5076] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5076] close(4) = 0 [pid 5076] rmdir("./1/file0") = 0 [pid 5076] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5076] close(3) = 0 [pid 5076] rmdir("./1") = 0 [pid 5090] <... ioctl resumed>) = 0 [pid 5090] close(3) = 0 [pid 5076] mkdir("./2", 0777 [pid 5090] close(4 [pid 5076] <... mkdir resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5090] mkdir("./file0", 0777 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5090] <... mkdir resumed>) = 0 [pid 5078] <... umount2 resumed>) = 0 [pid 5090] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5078] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 59.363140][ T5090] loop1: detected capacity change from 0 to 32768 [pid 5078] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5078] close(4) = 0 [pid 5078] rmdir("./1/file0") = 0 [pid 5090] <... mount resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file0") = 0 [pid 5078] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5078] close(3 [pid 5090] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] <... close resumed>) = 0 [pid 5090] exit_group(0 [pid 5078] rmdir("./1" [pid 5090] <... exit_group resumed>) = ? [pid 5078] <... rmdir resumed>) = 0 [pid 5078] mkdir("./2", 0777) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5090] +++ exited with 0 +++ [pid 5078] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5075] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=11 /* 0.11 s */, si_stime=23 /* 0.23 s */} --- [pid 5078] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5094 attached ) = -1 EINVAL (Invalid argument) [pid 5075] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] <... clone resumed>, child_tidptr=0x55559014a650) = 5094 [pid 5075] <... openat resumed>) = 3 [pid 5094] set_robust_list(0x55559014a660, 24 [pid 5075] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5075] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5075] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5075] unlink("./1/binderfs") = 0 [pid 5075] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5094] <... set_robust_list resumed>) = 0 [pid 5094] chdir("./2" [pid 5075] <... umount2 resumed>) = 0 [pid 5094] <... chdir resumed>) = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5075] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5094] <... prctl resumed>) = 0 [pid 5094] setpgid(0, 0 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5094] <... setpgid resumed>) = 0 [pid 5075] newfstatat(AT_FDCWD, "./1/file0", [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5094] <... openat resumed>) = 3 [pid 5075] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5094] write(3, "1000", 4 [pid 5092] <... write resumed>) = 16777216 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5092] munmap(0x7f960be00000, 138412032 [pid 5094] <... write resumed>) = 4 [pid 5075] <... openat resumed>) = 4 [pid 5094] close(3) = 0 [pid 5075] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs" [pid 5075] getdents64(4, [pid 5094] <... symlink resumed>) = 0 [pid 5075] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5094] memfd_create("syzkaller", 0) = 3 [pid 5075] getdents64(4, [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5075] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5075] close(4) = 0 [pid 5075] rmdir("./1/file0") = 0 [pid 5075] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5075] close(3) = 0 [pid 5075] rmdir("./1") = 0 [pid 5075] mkdir("./2", 0777) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5092] <... munmap resumed>) = 0 [pid 5075] <... openat resumed>) = 3 [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5092] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5092] close(3) = 0 [pid 5092] close(4) = 0 [pid 5092] mkdir("./file0", 0777) = 0 [ 59.569061][ T5092] loop0: detected capacity change from 0 to 32768 [pid 5092] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5092] chdir("./file0") = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5092] exit_group(0) = ? [pid 5092] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=31 /* 0.31 s */} --- [pid 5074] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5074] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5074] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5074] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5074] unlink("./1/binderfs") = 0 [pid 5074] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5074] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5074] umount2("./1/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5074] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5074] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5074] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5074] close(4) = 0 [pid 5074] rmdir("./1/file0") = 0 [pid 5076] <... ioctl resumed>) = 0 [pid 5074] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5074] close(3 [pid 5076] close(3 [pid 5074] <... close resumed>) = 0 [pid 5074] rmdir("./1" [pid 5076] <... close resumed>) = 0 [pid 5074] <... rmdir resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] mkdir("./2", 0777) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55559014a650) = 5095 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5074] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5095 attached [pid 5095] set_robust_list(0x55559014a660, 24) = 0 [pid 5095] chdir("./2") = 0 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5095] write(3, "1000", 4) = 4 [pid 5095] close(3) = 0 [pid 5095] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5095] memfd_create("syzkaller", 0) = 3 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5075] <... ioctl resumed>) = 0 [pid 5075] close(3) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5096 attached , child_tidptr=0x55559014a650) = 5096 [pid 5096] set_robust_list(0x55559014a660, 24) = 0 [pid 5096] chdir("./2") = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5096] memfd_create("syzkaller", 0) = 3 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5093] <... write resumed>) = 16777216 [pid 5074] <... ioctl resumed>) = 0 [pid 5093] munmap(0x7f960be00000, 138412032 [pid 5074] close(3) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5097 attached [pid 5097] set_robust_list(0x55559014a660, 24 [pid 5074] <... clone resumed>, child_tidptr=0x55559014a650) = 5097 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5097] chdir("./2") = 0 [pid 5093] <... munmap resumed>) = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5097] <... prctl resumed>) = 0 [pid 5097] setpgid(0, 0) = 0 [pid 5093] ioctl(4, LOOP_SET_FD, 3 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5097] write(3, "1000", 4) = 4 [pid 5097] close(3) = 0 [pid 5097] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5097] memfd_create("syzkaller", 0 [pid 5093] <... ioctl resumed>) = 0 [pid 5093] close(3) = 0 [pid 5093] close(4 [pid 5097] <... memfd_create resumed>) = 3 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5093] <... close resumed>) = 0 [pid 5093] mkdir("./file0", 0777) = 0 [pid 5093] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [ 60.235726][ T5093] loop3: detected capacity change from 0 to 32768 [pid 5093] chdir("./file0") = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5093] exit_group(0) = ? [pid 5093] +++ exited with 0 +++ [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=10 /* 0.10 s */, si_stime=28 /* 0.28 s */} --- [pid 5077] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5077] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5077] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] unlink("./2/binderfs") = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5077] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] close(4) = 0 [pid 5077] rmdir("./2/file0") = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3) = 0 [pid 5077] rmdir("./2") = 0 [pid 5077] mkdir("./3", 0777) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD) = 0 [pid 5077] close(3) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5098 attached [pid 5098] set_robust_list(0x55559014a660, 24) = 0 [pid 5098] chdir("./3") = 0 [pid 5077] <... clone resumed>, child_tidptr=0x55559014a650) = 5098 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5098] setpgid(0, 0) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5098] write(3, "1000", 4) = 4 [pid 5098] close(3) = 0 [pid 5098] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5098] memfd_create("syzkaller", 0 [pid 5094] <... write resumed>) = 16777216 [pid 5098] <... memfd_create resumed>) = 3 [pid 5094] munmap(0x7f960be00000, 138412032 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5094] <... munmap resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5094] close(3) = 0 [pid 5094] close(4) = 0 [ 60.463230][ T5094] loop4: detected capacity change from 0 to 32768 [pid 5096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5094] mkdir("./file0", 0777) = 0 [pid 5094] mount("/dev/loop4", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [pid 5094] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5094] chdir("./file0") = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] exit_group(0) = ? [pid 5094] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=10 /* 0.10 s */, si_stime=21 /* 0.21 s */} --- [pid 5078] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5078] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5078] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] unlink("./2/binderfs") = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5078] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5078] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5078] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5078] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5078] close(4) = 0 [pid 5078] rmdir("./2/file0") = 0 [pid 5097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5078] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5078] close(3) = 0 [pid 5078] rmdir("./2") = 0 [pid 5078] mkdir("./3", 0777) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5095] <... write resumed>) = 16777216 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5095] munmap(0x7f960be00000, 138412032) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5095] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5095] close(3) = 0 [pid 5095] close(4) = 0 [ 60.788107][ T5095] loop2: detected capacity change from 0 to 32768 [pid 5095] mkdir("./file0", 0777) = 0 [pid 5095] mount("/dev/loop2", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5095] <... mount resumed>) = 0 [pid 5095] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5095] chdir("./file0") = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5095] exit_group(0) = ? [pid 5095] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=29 /* 0.29 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5076] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5076] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5076] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5076] unlink("./2/binderfs") = 0 [pid 5076] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5076] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5076] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5076] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5076] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5076] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5076] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5076] close(4) = 0 [pid 5076] rmdir("./2/file0" [pid 5096] <... write resumed>) = 16777216 [pid 5096] munmap(0x7f960be00000, 138412032 [pid 5076] <... rmdir resumed>) = 0 [pid 5076] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5076] close(3) = 0 [pid 5076] rmdir("./2" [pid 5096] <... munmap resumed>) = 0 [pid 5076] <... rmdir resumed>) = 0 [pid 5076] mkdir("./3", 0777 [pid 5096] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5076] <... mkdir resumed>) = 0 [pid 5096] <... openat resumed>) = 4 [pid 5096] ioctl(4, LOOP_SET_FD, 3 [pid 5097] <... write resumed>) = 16777216 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5078] <... ioctl resumed>) = 0 [pid 5097] munmap(0x7f960be00000, 138412032 [pid 5096] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5096] close(3 [pid 5078] <... close resumed>) = 0 [pid 5096] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5099 ./strace-static-x86_64: Process 5099 attached [pid 5099] set_robust_list(0x55559014a660, 24 [pid 5096] close(4 [pid 5099] <... set_robust_list resumed>) = 0 [pid 5096] <... close resumed>) = 0 [pid 5099] chdir("./3" [pid 5096] mkdir("./file0", 0777) = 0 [pid 5099] <... chdir resumed>) = 0 [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] mount("/dev/loop1", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5099] setpgid(0, 0 [pid 5097] <... munmap resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5099] <... setpgid resumed>) = 0 [pid 5097] <... openat resumed>) = 4 [ 61.078461][ T5096] loop1: detected capacity change from 0 to 32768 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5097] ioctl(4, LOOP_SET_FD, 3 [pid 5099] <... openat resumed>) = 3 [pid 5099] write(3, "1000", 4) = 4 [pid 5099] close(3) = 0 [pid 5099] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5099] memfd_create("syzkaller", 0) = 3 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5097] <... ioctl resumed>) = 0 [pid 5097] close(3) = 0 [pid 5096] <... mount resumed>) = 0 [pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5097] close(4 [pid 5096] <... openat resumed>) = 3 [ 61.139035][ T5097] loop0: detected capacity change from 0 to 32768 [pid 5097] <... close resumed>) = 0 [pid 5096] chdir("./file0") = 0 [pid 5097] mkdir("./file0", 0777 [pid 5096] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5096] exit_group(0) = ? [pid 5096] +++ exited with 0 +++ [pid 5097] <... mkdir resumed>) = 0 [pid 5075] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=16 /* 0.16 s */, si_stime=25 /* 0.25 s */} --- [pid 5097] mount("/dev/loop0", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota" [pid 5075] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5075] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5075] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5075] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5075] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5075] unlink("./2/binderfs" [pid 5097] <... mount resumed>) = 0 [pid 5075] <... unlink resumed>) = 0 [pid 5097] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5075] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5097] <... openat resumed>) = 3 [pid 5097] chdir("./file0") = 0 [pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5097] exit_group(0) = ? [pid 5097] +++ exited with 0 +++ [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=12 /* 0.12 s */, si_stime=19 /* 0.19 s */} --- [pid 5074] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5074] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5074] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5074] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5074] unlink("./2/binderfs" [pid 5075] <... umount2 resumed>) = 0 [pid 5074] <... unlink resumed>) = 0 [pid 5075] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5074] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5075] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] <... umount2 resumed>) = 0 [pid 5074] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5074] umount2("./2/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5074] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5074] newfstatat(4, "", [pid 5075] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5074] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5075] <... openat resumed>) = 4 [pid 5074] getdents64(4, [pid 5075] newfstatat(4, "", [pid 5074] <... getdents64 resumed>0x555590153730 /* 2 entries */, 32768) = 48 [pid 5075] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5074] getdents64(4, [pid 5075] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5075] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5074] <... getdents64 resumed>0x555590153730 /* 0 entries */, 32768) = 0 [pid 5075] close(4) = 0 [pid 5075] rmdir("./2/file0" [pid 5074] close(4 [pid 5075] <... rmdir resumed>) = 0 [pid 5074] <... close resumed>) = 0 [pid 5098] <... write resumed>) = 16777216 [pid 5074] rmdir("./2/file0" [pid 5098] munmap(0x7f960be00000, 138412032 [pid 5075] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5074] <... rmdir resumed>) = 0 [pid 5075] close(3) = 0 [pid 5075] rmdir("./2") = 0 [pid 5075] mkdir("./3", 0777 [pid 5074] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5075] <... mkdir resumed>) = 0 [pid 5074] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5074] rmdir("./2" [pid 5075] <... openat resumed>) = 3 [pid 5074] <... rmdir resumed>) = 0 [pid 5074] mkdir("./3", 0777 [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5074] <... mkdir resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5074] ioctl(3, LOOP_CLR_FD [pid 5098] <... munmap resumed>) = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5098] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5098] close(3) = 0 [pid 5098] close(4) = 0 [pid 5098] mkdir("./file0", 0777) = 0 [pid 5098] mount("/dev/loop3", "./file0", "jfs", MS_NOSUID, "quota,errors=remount-ro,integrity,iocharset=cp932,nodiscard,nointegrity,grpquota") = 0 [ 61.309566][ T5098] loop3: detected capacity change from 0 to 32768 [pid 5098] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5098] chdir("./file0") = 0 [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5098] exit_group(0) = ? [pid 5098] +++ exited with 0 +++ [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=13 /* 0.13 s */, si_stime=17 /* 0.17 s */} --- [pid 5077] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5077] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 4 entries */, 32768) = 112 [pid 5077] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] unlink("./3/binderfs") = 0 [pid 5077] umount2("./3/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5077] umount2("./3/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5077] umount2("./3/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5077] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5077] getdents64(4, 0x555590153730 /* 2 entries */, 32768) = 48 [pid 5077] getdents64(4, 0x555590153730 /* 0 entries */, 32768) = 0 [pid 5077] close(4) = 0 [pid 5077] rmdir("./3/file0") = 0 [pid 5077] getdents64(3, 0x55559014b6f0 /* 0 entries */, 32768) = 0 [pid 5077] close(3) = 0 [pid 5077] rmdir("./3") = 0 [pid 5077] mkdir("./4", 0777 [pid 5076] <... ioctl resumed>) = 0 [pid 5077] <... mkdir resumed>) = 0 [pid 5076] close(3 [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5076] <... close resumed>) = 0 [pid 5077] <... openat resumed>) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] close(3) = 0 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5100 [pid 5076] <... clone resumed>, child_tidptr=0x55559014a650) = 5101 ./strace-static-x86_64: Process 5101 attached ./strace-static-x86_64: Process 5100 attached [pid 5101] set_robust_list(0x55559014a660, 24 [pid 5100] set_robust_list(0x55559014a660, 24 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5101] chdir("./3" [pid 5100] <... set_robust_list resumed>) = 0 [pid 5100] chdir("./4" [pid 5101] <... chdir resumed>) = 0 [pid 5100] <... chdir resumed>) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5101] setpgid(0, 0 [pid 5100] <... prctl resumed>) = 0 [pid 5101] <... setpgid resumed>) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5100] <... openat resumed>) = 3 [pid 5100] write(3, "1000", 4 [pid 5101] <... openat resumed>) = 3 [pid 5100] <... write resumed>) = 4 [pid 5100] close(3 [pid 5101] write(3, "1000", 4 [pid 5100] <... close resumed>) = 0 [pid 5101] <... write resumed>) = 4 [pid 5100] symlink("/dev/binderfs", "./binderfs" [pid 5101] close(3 [pid 5100] <... symlink resumed>) = 0 [pid 5101] <... close resumed>) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs" [pid 5100] memfd_create("syzkaller", 0 [pid 5101] <... symlink resumed>) = 0 [pid 5101] memfd_create("syzkaller", 0 [pid 5100] <... memfd_create resumed>) = 3 [pid 5101] <... memfd_create resumed>) = 3 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f960be00000 [pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5074] <... ioctl resumed>) = 0 [pid 5074] close(3) = 0 [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55559014a650) = 5102 ./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x55559014a660, 24) = 0 [pid 5102] chdir("./3") = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5075] <... ioctl resumed>) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5075] close(3) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5103 attached [pid 5075] <... clone resumed>, child_tidptr=0x55559014a650) = 5103 [pid 5103] set_robust_list(0x55559014a660, 24) = 0 [pid 5102] write(3, "1000", 4 [pid 5103] chdir("./3" [pid 5102] <... write resumed>) = 4 [pid 5103] <... chdir resumed>) = 0 [pid 5102] close(3 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5102] <... close resumed>) = 0 [pid 5103] <... prctl resumed>) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs" [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5102] <... symlink resumed>) = 0 [pid 5103] <... openat resumed>) = 3 [pid 5103] write(3, "1000", 4 [pid 5102] memfd_create("syzkaller", 0 [pid 5103] <... write resumed>) = 4 [pid 5102] <... memfd_create resumed>) = 3 [pid 5103] close(3 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0