./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1959238023 <...> Warning: Permanently added '10.128.10.49' (ED25519) to the list of known hosts. execve("./syz-executor1959238023", ["./syz-executor1959238023"], 0x7ffdaf082c40 /* 10 vars */) = 0 brk(NULL) = 0x55555695e000 brk(0x55555695ed00) = 0x55555695ed00 arch_prctl(ARCH_SET_FS, 0x55555695e380) = 0 set_tid_address(0x55555695e650) = 5053 set_robust_list(0x55555695e660, 24) = 0 rseq(0x55555695eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1959238023", 4096) = 28 getrandom("\x29\xb9\xcc\x80\x51\x93\x61\x03", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555695ed00 brk(0x55555697fd00) = 0x55555697fd00 brk(0x555556980000) = 0x555556980000 mprotect(0x7f4da9208000, 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./strace-static-x86_64: Process 5054 attached , child_tidptr=0x55555695e650) = 5054 [pid 5053] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] set_robust_list(0x55555695e660, 24) = 0 [pid 5053] <... clone resumed>, child_tidptr=0x55555695e650) = 5055 ./strace-static-x86_64: Process 5055 attached [pid 5053] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] mkdir("./syzkaller.epIN6I", 0700 [pid 5055] set_robust_list(0x55555695e660, 24) = 0 [pid 5054] <... mkdir resumed>) = 0 [pid 5053] <... clone resumed>, child_tidptr=0x55555695e650) = 5056 ./strace-static-x86_64: Process 5056 attached [pid 5055] mkdir("./syzkaller.8BJ8wz", 0700 [pid 5054] chmod("./syzkaller.epIN6I", 0777 [pid 5053] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] set_robust_list(0x55555695e660, 24 [pid 5054] <... chmod resumed>) = 0 [pid 5054] chdir("./syzkaller.epIN6I" [pid 5055] <... mkdir resumed>) = 0 [pid 5054] <... chdir resumed>) = 0 [pid 5054] mkdir("./0", 0777./strace-static-x86_64: Process 5057 attached [pid 5056] <... set_robust_list resumed>) = 0 [pid 5055] chmod("./syzkaller.8BJ8wz", 0777 [pid 5053] <... clone resumed>, child_tidptr=0x55555695e650) = 5057 [pid 5057] set_robust_list(0x55555695e660, 24 [pid 5056] mkdir("./syzkaller.c9QuBH", 0700 [pid 5055] <... chmod resumed>) = 0 [pid 5054] <... mkdir resumed>) = 0 [pid 5053] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... set_robust_list resumed>) = 0 [pid 5055] chdir("./syzkaller.8BJ8wz") = 0 ./strace-static-x86_64: Process 5058 attached [pid 5057] mkdir("./syzkaller.cRQs1y", 0700 [pid 5056] <... mkdir resumed>) = 0 [pid 5055] mkdir("./0", 0777 [pid 5053] <... clone resumed>, child_tidptr=0x55555695e650) = 5058 [pid 5053] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] set_robust_list(0x55555695e660, 24 [pid 5055] <... mkdir resumed>) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5056] chmod("./syzkaller.c9QuBH", 0777) = 0 ./strace-static-x86_64: Process 5059 attached [pid 5058] <... set_robust_list resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] chdir("./syzkaller.c9QuBH" [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5054] <... openat resumed>) = 3 [pid 5053] <... clone resumed>, child_tidptr=0x55555695e650) = 5059 [pid 5059] set_robust_list(0x55555695e660, 24 [pid 5058] mkdir("./syzkaller.zRhvkO", 0700 [pid 5057] chmod("./syzkaller.cRQs1y", 0777 [pid 5056] <... chdir resumed>) = 0 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5059] <... set_robust_list resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... chmod resumed>) = 0 [pid 5056] mkdir("./0", 0777 [pid 5055] <... openat resumed>) = 3 [pid 5054] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5059] mkdir("./syzkaller.SiU8CO", 0700 [pid 5058] chmod("./syzkaller.zRhvkO", 0777 [pid 5057] chdir("./syzkaller.cRQs1y" [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5054] close(3) = 0 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... chmod resumed>) = 0 [pid 5059] chmod("./syzkaller.SiU8CO", 0777 [pid 5055] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5057] <... chdir resumed>) = 0 ./strace-static-x86_64: Process 5060 attached [pid 5059] <... chmod resumed>) = 0 [pid 5059] chdir("./syzkaller.SiU8CO" [pid 5060] set_robust_list(0x55555695e660, 24 [pid 5059] <... chdir resumed>) = 0 [pid 5060] <... set_robust_list resumed>) = 0 [pid 5059] mkdir("./0", 0777 [pid 5060] chdir("./0" [pid 5059] <... mkdir resumed>) = 0 [pid 5060] <... chdir resumed>) = 0 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5060 [pid 5060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5060] setpgid(0, 0) = 0 [pid 5060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5058] chdir("./syzkaller.zRhvkO" [pid 5057] mkdir("./0", 0777 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5055] close(3 [pid 5060] write(3, "1000", 4 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... chdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5055] <... close resumed>) = 0 [pid 5060] <... write resumed>) = 4 [pid 5058] mkdir("./0", 0777 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] close(3) = 0 [pid 5060] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5059] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5057] <... openat resumed>) = 3 [pid 5056] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5057] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5062 attached [pid 5060] memfd_create("syzkaller", 0 [pid 5059] close(3 [pid 5057] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5056] close(3 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5062 [pid 5062] set_robust_list(0x55555695e660, 24) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] close(3 [pid 5056] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] chdir("./0" [pid 5057] <... close resumed>) = 0 [pid 5062] <... chdir resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5062] <... prctl resumed>) = 0 [pid 5060] <... memfd_create resumed>) = 3 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5064 attached [pid 5062] setpgid(0, 0 [pid 5060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5065 attached ./strace-static-x86_64: Process 5063 attached [pid 5064] set_robust_list(0x55555695e660, 24 [pid 5062] <... setpgid resumed>) = 0 [pid 5060] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5063 [pid 5065] set_robust_list(0x55555695e660, 24 [pid 5064] <... set_robust_list resumed>) = 0 [pid 5063] set_robust_list(0x55555695e660, 24 [pid 5062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5065] <... set_robust_list resumed>) = 0 [pid 5064] chdir("./0" [pid 5063] <... set_robust_list resumed>) = 0 [pid 5062] <... openat resumed>) = 3 [pid 5060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5064 [pid 5058] close(3 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5065 [pid 5065] chdir("./0" [pid 5064] <... chdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5065] <... chdir resumed>) = 0 [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5063] chdir("./0" [pid 5062] write(3, "1000", 4 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] <... prctl resumed>) = 0 [pid 5063] <... chdir resumed>) = 0 [pid 5062] <... write resumed>) = 4 [pid 5065] <... prctl resumed>) = 0 [pid 5064] setpgid(0, 0) = 0 [pid 5065] setpgid(0, 0 [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5066 attached [pid 5065] <... setpgid resumed>) = 0 [pid 5064] <... openat resumed>) = 3 [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5062] close(3) = 0 [pid 5063] <... prctl resumed>) = 0 [pid 5064] write(3, "1000", 4 [pid 5065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5064] <... write resumed>) = 4 [pid 5063] setpgid(0, 0 [pid 5062] symlink("/dev/binderfs", "./binderfs" [pid 5066] set_robust_list(0x55555695e660, 24 [pid 5064] close(3 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5066 [pid 5064] <... close resumed>) = 0 [pid 5064] symlink("/dev/binderfs", "./binderfs" [pid 5062] <... symlink resumed>) = 0 [pid 5066] <... set_robust_list resumed>) = 0 [pid 5063] <... setpgid resumed>) = 0 [pid 5066] chdir("./0" [pid 5065] <... openat resumed>) = 3 [pid 5064] <... symlink resumed>) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] <... chdir resumed>) = 0 [pid 5065] write(3, "1000", 4 [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5065] <... write resumed>) = 4 [pid 5063] <... openat resumed>) = 3 [pid 5062] memfd_create("syzkaller", 0 [pid 5066] <... prctl resumed>) = 0 [pid 5065] close(3 [pid 5064] memfd_create("syzkaller", 0 [pid 5063] write(3, "1000", 4 [pid 5062] <... memfd_create resumed>) = 3 [pid 5066] setpgid(0, 0 [pid 5065] <... close resumed>) = 0 [pid 5064] <... memfd_create resumed>) = 3 [pid 5063] <... write resumed>) = 4 [pid 5062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5066] <... setpgid resumed>) = 0 [pid 5065] symlink("/dev/binderfs", "./binderfs" [pid 5063] close(3 [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5063] <... close resumed>) = 0 [pid 5062] <... mmap resumed>) = 0x7f4da0c00000 [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] <... symlink resumed>) = 0 [pid 5064] <... mmap resumed>) = 0x7f4da0c00000 [pid 5063] symlink("/dev/binderfs", "./binderfs" [pid 5065] memfd_create("syzkaller", 0 [pid 5063] <... symlink resumed>) = 0 [pid 5066] <... openat resumed>) = 3 [pid 5065] <... memfd_create resumed>) = 3 [pid 5065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5066] write(3, "1000", 4) = 4 [pid 5065] <... mmap resumed>) = 0x7f4da0c00000 [pid 5063] memfd_create("syzkaller", 0 [pid 5066] close(3) = 0 [pid 5066] symlink("/dev/binderfs", "./binderfs" [pid 5063] <... memfd_create resumed>) = 3 [pid 5060] <... write resumed>) = 2097152 [pid 5066] <... symlink resumed>) = 0 [pid 5065] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5062] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5066] memfd_create("syzkaller", 0) = 3 [pid 5064] <... write resumed>) = 2097152 [pid 5063] <... mmap resumed>) = 0x7f4da0c00000 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5060] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5060] ioctl(4, LOOP_SET_FD, 3 [pid 5066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5060] <... ioctl resumed>) = 0 [pid 5060] close(3) = 0 [pid 5060] close(4) = 0 [pid 5060] mkdir("./file1", 0777) = 0 [pid 5060] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5064] munmap(0x7f4da0c00000, 138412032 [pid 5063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5062] <... write resumed>) = 2097152 [pid 5062] munmap(0x7f4da0c00000, 138412032) = 0 [ 51.721999][ T5060] loop0: detected capacity change from 0 to 4096 [ 51.752900][ T5060] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5065] <... write resumed>) = 2097152 [pid 5062] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5065] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5064] <... munmap resumed>) = 0 [pid 5062] <... openat resumed>) = 4 [pid 5064] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5062] ioctl(4, LOOP_SET_FD, 3 [pid 5065] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5064] ioctl(4, LOOP_SET_FD, 3 [pid 5065] <... openat resumed>) = 4 [pid 5065] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5066] <... write resumed>) = 2097152 [pid 5065] close(3 [pid 5064] <... ioctl resumed>) = 0 [pid 5063] <... write resumed>) = 2097152 [pid 5062] <... ioctl resumed>) = 0 [pid 5066] munmap(0x7f4da0c00000, 138412032 [pid 5064] close(3 [pid 5062] close(3 [pid 5065] <... close resumed>) = 0 [pid 5065] close(4 [pid 5064] <... close resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5064] close(4 [pid 5062] close(4 [pid 5065] <... close resumed>) = 0 [pid 5064] <... close resumed>) = 0 [pid 5064] mkdir("./file1", 0777 [pid 5066] <... munmap resumed>) = 0 [pid 5065] mkdir("./file1", 0777 [pid 5064] <... mkdir resumed>) = 0 [pid 5062] <... close resumed>) = 0 [ 51.775708][ T5062] loop1: detected capacity change from 0 to 4096 [ 51.776385][ T5064] loop5: detected capacity change from 0 to 4096 [ 51.791521][ T5065] loop2: detected capacity change from 0 to 4096 [ 51.798533][ T5060] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 51.808657][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop0 [pid 5064] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5063] munmap(0x7f4da0c00000, 138412032 [pid 5066] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5065] <... mkdir resumed>) = 0 [pid 5062] mkdir("./file1", 0777 [pid 5066] <... openat resumed>) = 4 [pid 5065] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5063] <... munmap resumed>) = 0 [pid 5062] <... mkdir resumed>) = 0 [pid 5066] ioctl(4, LOOP_SET_FD, 3 [pid 5062] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5060] <... mount resumed>) = 0 [pid 5060] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5060] chdir("./file1") = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 51.818725][ T5064] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 51.834048][ T5066] loop4: detected capacity change from 0 to 4096 [ 51.841726][ T5065] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 51.846577][ T5069] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 51.862258][ T5062] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5060] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5066] <... ioctl resumed>) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5066] close(3) = 0 [pid 5066] close(4) = 0 [pid 5066] mkdir("./file1", 0777 [pid 5063] <... openat resumed>) = 4 [pid 5066] <... mkdir resumed>) = 0 [pid 5063] ioctl(4, LOOP_SET_FD, 3 [pid 5066] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5063] <... ioctl resumed>) = 0 [pid 5060] <... open resumed>) = 4 [pid 5060] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5060] ftruncate(5, 33587195) = 0 [pid 5060] sendfile(4, 5, NULL, 281474978811909 [pid 5063] close(3) = 0 [ 51.873930][ T5065] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 51.874175][ T5064] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [ 51.883861][ T5063] loop3: detected capacity change from 0 to 4096 [ 51.900325][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop2 [ 51.909209][ T5066] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5063] close(4) = 0 [pid 5063] mkdir("./file1", 0777) = 0 [pid 5063] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5065] <... mount resumed>) = 0 [pid 5065] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5065] chdir("./file1") = 0 [pid 5065] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [ 51.922665][ T5062] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 51.934892][ T5070] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 51.948389][ T5063] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 51.950648][ T5072] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5064] <... mount resumed>) = 0 [pid 5064] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5064] chdir("./file1") = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5064] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5065] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5065] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5065] ftruncate(5, 33587195) = 0 [pid 5065] sendfile(4, 5, NULL, 281474978811909 [pid 5064] <... open resumed>) = 4 [pid 5064] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5064] ftruncate(5, 33587195) = 0 [ 51.971731][ T5066] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 51.982884][ T5068] udevd[5068]: incorrect nilfs2 checksum on /dev/loop5 [ 51.998185][ T5061] udevd[5061]: incorrect nilfs2 checksum on /dev/loop1 [ 52.005949][ T5063] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5064] sendfile(4, 5, NULL, 281474978811909 [pid 5062] <... mount resumed>) = 0 [pid 5062] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5062] chdir("./file1") = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [ 52.021418][ T5073] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.039902][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop3 [ 52.049300][ T5074] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.060247][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop4 [pid 5062] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5066] <... mount resumed>) = 0 [pid 5066] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5066] chdir("./file1") = 0 [pid 5066] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5066] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5063] <... mount resumed>) = 0 [pid 5063] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5063] chdir("./file1") = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5063] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5066] <... open resumed>) = 4 [pid 5066] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5066] ftruncate(5, 33587195 [pid 5062] <... open resumed>) = 4 [pid 5062] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5066] <... ftruncate resumed>) = 0 [pid 5066] sendfile(4, 5, NULL, 281474978811909 [pid 5062] <... open resumed>) = 5 [pid 5062] ftruncate(5, 33587195) = 0 [ 52.070914][ T5075] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5062] sendfile(4, 5, NULL, 281474978811909 [pid 5063] <... open resumed>) = 4 [pid 5063] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5063] ftruncate(5, 33587195) = 0 [pid 5063] sendfile(4, 5, NULL, 281474978811909 [pid 5065] <... sendfile resumed>) = 368640 [pid 5065] unlink("./bus") = 0 [pid 5065] exit_group(0) = ? [pid 5065] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5065, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5060] <... sendfile resumed>) = 368640 [pid 5060] unlink("./bus") = 0 [pid 5060] exit_group(0) = ? [pid 5056] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", [pid 5064] <... sendfile resumed>) = 368640 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5064] unlink("./bus" [pid 5056] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5064] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5064] exit_group(0) = ? [pid 5056] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./0/binderfs") = 0 [pid 5056] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5066] <... sendfile resumed>) = 368640 [pid 5066] unlink("./bus" [pid 5060] +++ exited with 0 +++ [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5066] <... unlink resumed>) = 0 [pid 5066] exit_group(0 [pid 5054] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5066] <... exit_group resumed>) = ? [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5054] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./0/binderfs") = 0 [pid 5054] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5066] +++ exited with 0 +++ [pid 5064] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5056] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5064, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [pid 5059] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./0/file1", [pid 5059] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5056] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(3, "", [pid 5058] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] newfstatat(3, "", [pid 5056] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(3, [pid 5056] <... openat resumed>) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] getdents64(3, [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] getdents64(4, [pid 5059] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5056] close(4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... close resumed>) = 0 [pid 5059] unlink("./0/binderfs" [pid 5058] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5056] rmdir("./0/file1" [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] unlink("./0/binderfs" [pid 5059] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... unlink resumed>) = 0 [pid 5058] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./0") = 0 [pid 5056] mkdir("./1", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5063] <... sendfile resumed>) = 368640 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5063] unlink("./bus" [pid 5054] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5054] newfstatat(AT_FDCWD, "./0/file1", [pid 5063] <... unlink resumed>) = 0 [pid 5062] <... sendfile resumed>) = 368640 [pid 5059] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5062] unlink("./bus" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5063] exit_group(0) = ? [pid 5059] newfstatat(AT_FDCWD, "./0/file1", [pid 5058] newfstatat(AT_FDCWD, "./0/file1", [pid 5054] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... openat resumed>) = 4 [pid 5062] <... unlink resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5062] exit_group(0 [pid 5059] newfstatat(4, "", [pid 5058] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] newfstatat(4, "", [pid 5062] <... exit_group resumed>) = ? [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5059] getdents64(4, [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] newfstatat(4, "", [pid 5054] getdents64(4, [pid 5059] getdents64(4, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5054] getdents64(4, [pid 5059] close(4 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] rmdir("./0/file1" [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] close(4 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] close(4) = 0 [pid 5054] <... close resumed>) = 0 [pid 5059] getdents64(3, [pid 5058] rmdir("./0/file1" [pid 5054] rmdir("./0/file1" [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5059] close(3 [pid 5058] getdents64(3, [pid 5054] <... rmdir resumed>) = 0 [pid 5063] +++ exited with 0 +++ [pid 5059] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] getdents64(3, [pid 5059] rmdir("./0" [pid 5058] close(3 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5054] close(3 [pid 5059] mkdir("./1", 0777 [pid 5058] rmdir("./0" [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5054] <... close resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5054] rmdir("./0") = 0 [pid 5057] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] mkdir("./1", 0777 [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] mkdir("./1", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... mkdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] getdents64(3, [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] <... openat resumed>) = 3 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5062] +++ exited with 0 +++ [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5062, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5055] restart_syscall(<... resuming interrupted clone ...> [pid 5057] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5076 attached , child_tidptr=0x55555695e650) = 5076 [pid 5076] set_robust_list(0x55555695e660, 24 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... restart_syscall resumed>) = 0 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] unlink("./0/binderfs" [pid 5076] chdir("./1") = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... unlink resumed>) = 0 [pid 5076] <... prctl resumed>) = 0 [pid 5057] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5076] setpgid(0, 0) = 0 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5076] write(3, "1000", 4) = 4 [pid 5076] close(3) = 0 [pid 5076] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5076] memfd_create("syzkaller", 0) = 3 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5077 attached [pid 5077] set_robust_list(0x55555695e660, 24) = 0 [pid 5077] chdir("./1") = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] setpgid(0, 0) = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5077 [pid 5077] write(3, "1000", 4) = 4 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] close(3) = 0 [pid 5077] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5077] memfd_create("syzkaller", 0) = 3 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5055] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5054] <... ioctl resumed>) = 0 [pid 5055] newfstatat(3, "", [pid 5059] close(3 [pid 5054] close(3 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... close resumed>) = 0 [pid 5076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5059] <... close resumed>) = 0 [pid 5055] getdents64(3, [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5078 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5079 ./strace-static-x86_64: Process 5078 attached [pid 5055] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] set_robust_list(0x55555695e660, 24 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... set_robust_list resumed>) = 0 [pid 5055] newfstatat(AT_FDCWD, "./0/binderfs", [pid 5078] chdir("./1"./strace-static-x86_64: Process 5079 attached [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5079] set_robust_list(0x55555695e660, 24) = 0 [pid 5079] chdir("./1") = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setpgid(0, 0 [pid 5078] <... chdir resumed>) = 0 [pid 5055] unlink("./0/binderfs" [pid 5079] <... setpgid resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5055] <... unlink resumed>) = 0 [pid 5078] <... prctl resumed>) = 0 [pid 5055] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5079] <... openat resumed>) = 3 [pid 5079] write(3, "1000", 4) = 4 [pid 5078] setpgid(0, 0 [pid 5079] close(3) = 0 [pid 5079] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5078] <... setpgid resumed>) = 0 [pid 5079] memfd_create("syzkaller", 0) = 3 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5079] <... mmap resumed>) = 0x7f4da0c00000 [pid 5078] <... openat resumed>) = 3 [pid 5078] write(3, "1000", 4) = 4 [pid 5077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] <... umount2 resumed>) = 0 [pid 5078] close(3 [pid 5055] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] <... close resumed>) = 0 [pid 5078] symlink("/dev/binderfs", "./binderfs" [pid 5076] <... write resumed>) = 2097152 [pid 5057] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5078] <... symlink resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./0/file1", [pid 5078] memfd_create("syzkaller", 0 [pid 5076] munmap(0x7f4da0c00000, 138412032 [pid 5057] newfstatat(AT_FDCWD, "./0/file1", [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5078] <... memfd_create resumed>) = 3 [pid 5076] <... munmap resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./0/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] <... openat resumed>) = 4 [pid 5078] <... mmap resumed>) = 0x7f4da0c00000 [pid 5057] <... openat resumed>) = 4 [pid 5055] newfstatat(4, "", [pid 5078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] newfstatat(4, "", [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [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"..., 2097152 [pid 5078] <... write resumed>) = 2097152 [pid 5077] <... write resumed>) = 2097152 [pid 5076] <... openat resumed>) = 4 [pid 5055] getdents64(4, [pid 5078] munmap(0x7f4da0c00000, 138412032 [pid 5076] ioctl(4, LOOP_SET_FD, 3 [pid 5057] getdents64(4, [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5079] <... write resumed>) = 2097152 [pid 5078] <... munmap resumed>) = 0 [pid 5077] munmap(0x7f4da0c00000, 138412032 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4) = 0 [pid 5055] rmdir("./0/file1") = 0 [pid 5079] munmap(0x7f4da0c00000, 138412032 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5077] <... munmap resumed>) = 0 [pid 5076] <... ioctl resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(3, [pid 5078] <... openat resumed>) = 4 [pid 5076] close(3 [pid 5057] getdents64(4, [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5076] <... close resumed>) = 0 [pid 5078] ioctl(4, LOOP_SET_FD, 3 [pid 5076] close(4 [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(3 [pid 5079] <... munmap resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5077] ioctl(4, LOOP_SET_FD, 3 [pid 5076] <... close resumed>) = 0 [pid 5057] close(4 [pid 5055] <... close resumed>) = 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5076] mkdir("./file1", 0777 [pid 5057] <... close resumed>) = 0 [pid 5078] close(3 [pid 5055] rmdir("./0" [pid 5078] <... close resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5079] ioctl(4, LOOP_SET_FD, 3 [pid 5078] close(4 [pid 5076] <... mkdir resumed>) = 0 [pid 5057] rmdir("./0/file1" [pid 5055] <... rmdir resumed>) = 0 [pid 5078] <... close resumed>) = 0 [ 52.502424][ T5076] loop2: detected capacity change from 0 to 4096 [ 52.522154][ T5078] loop0: detected capacity change from 0 to 4096 [ 52.523364][ T5077] loop4: detected capacity change from 0 to 4096 [ 52.535923][ T5079] loop5: detected capacity change from 0 to 4096 [pid 5079] <... ioctl resumed>) = 0 [pid 5078] mkdir("./file1", 0777 [pid 5077] <... ioctl resumed>) = 0 [pid 5076] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] <... rmdir resumed>) = 0 [pid 5055] mkdir("./1", 0777 [pid 5079] close(3) = 0 [pid 5079] close(4) = 0 [pid 5079] mkdir("./file1", 0777) = 0 [pid 5079] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] getdents64(3, [pid 5055] <... mkdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5057] close(3 [pid 5055] <... openat resumed>) = 3 [pid 5057] <... close resumed>) = 0 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] rmdir("./0") = 0 [pid 5057] mkdir("./1", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5078] <... mkdir resumed>) = 0 [pid 5077] close(3 [pid 5078] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5077] <... close resumed>) = 0 [pid 5077] close(4) = 0 [pid 5077] mkdir("./file1", 0777) = 0 [ 52.546259][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop2 [ 52.557250][ T5079] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 52.560393][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop0 [ 52.579362][ T5076] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 52.592745][ T5079] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5077] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5055] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [ 52.604213][ T5078] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 52.628139][ T5077] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 52.639689][ T5076] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5057] close(3) = 0 [pid 5055] close(3) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] <... mount resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5079] chdir("./file1") = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5081 [pid 5079] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x55555695e660, 24) = 0 [pid 5083] chdir("./1" [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5083 ./strace-static-x86_64: Process 5081 attached [ 52.644458][ T5080] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.659881][ T5078] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 52.672834][ T5077] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 52.673859][ T5068] udevd[5068]: incorrect nilfs2 checksum on /dev/loop5 [pid 5083] <... chdir resumed>) = 0 [pid 5081] set_robust_list(0x55555695e660, 24 [pid 5079] <... open resumed>) = 4 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5081] chdir("./1") = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setpgid(0, 0) = 0 [pid 5077] <... mount resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] <... openat resumed>) = 3 [pid 5079] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5077] <... openat resumed>) = 3 [pid 5083] <... prctl resumed>) = 0 [pid 5081] write(3, "1000", 4 [pid 5079] <... open resumed>) = 5 [pid 5077] chdir("./file1" [pid 5083] setpgid(0, 0 [pid 5081] <... write resumed>) = 4 [pid 5079] ftruncate(5, 33587195 [pid 5077] <... chdir resumed>) = 0 [pid 5083] <... setpgid resumed>) = 0 [pid 5081] close(3 [pid 5077] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] <... close resumed>) = 0 [pid 5077] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5083] <... openat resumed>) = 3 [pid 5081] symlink("/dev/binderfs", "./binderfs" [pid 5079] <... ftruncate resumed>) = 0 [pid 5083] write(3, "1000", 4 [pid 5079] sendfile(4, 5, NULL, 281474978811909 [pid 5083] <... write resumed>) = 4 [pid 5083] close(3) = 0 [pid 5083] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5083] memfd_create("syzkaller", 0) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5081] <... symlink resumed>) = 0 [pid 5081] memfd_create("syzkaller", 0 [pid 5077] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5081] <... memfd_create resumed>) = 3 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [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"..., 2097152 [pid 5076] <... mount resumed>) = 0 [pid 5076] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5076] chdir("./file1") = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5076] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5083] <... write resumed>) = 2097152 [pid 5083] munmap(0x7f4da0c00000, 138412032 [pid 5078] <... mount resumed>) = 0 [pid 5077] <... open resumed>) = 4 [pid 5076] <... open resumed>) = 4 [pid 5083] <... munmap resumed>) = 0 [pid 5078] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5077] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5083] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5076] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5083] <... openat resumed>) = 4 [pid 5078] <... openat resumed>) = 3 [pid 5077] <... open resumed>) = 5 [pid 5076] <... open resumed>) = 5 [ 52.700255][ T5082] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.708654][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop4 [ 52.723124][ T5084] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.726945][ T5085] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5083] ioctl(4, LOOP_SET_FD, 3 [pid 5078] chdir("./file1" [pid 5077] ftruncate(5, 33587195 [pid 5076] ftruncate(5, 33587195 [pid 5078] <... chdir resumed>) = 0 [pid 5077] <... ftruncate resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5077] sendfile(4, 5, NULL, 281474978811909 [pid 5076] <... ftruncate resumed>) = 0 [pid 5076] sendfile(4, 5, NULL, 281474978811909 [pid 5078] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5083] <... ioctl resumed>) = 0 [pid 5081] <... write resumed>) = 2097152 [pid 5078] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5083] close(3) = 0 [pid 5083] close(4) = 0 [pid 5083] mkdir("./file1", 0777 [pid 5081] munmap(0x7f4da0c00000, 138412032 [pid 5083] <... mkdir resumed>) = 0 [pid 5078] <... open resumed>) = 4 [pid 5078] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5081] <... munmap resumed>) = 0 [pid 5078] <... open resumed>) = 5 [pid 5078] ftruncate(5, 33587195 [pid 5081] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5083] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5078] <... ftruncate resumed>) = 0 [pid 5081] <... openat resumed>) = 4 [pid 5078] sendfile(4, 5, NULL, 281474978811909 [ 52.777848][ T5083] loop3: detected capacity change from 0 to 4096 [pid 5081] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5081] close(3) = 0 [pid 5081] close(4) = 0 [ 52.825420][ T5081] loop1: detected capacity change from 0 to 4096 [ 52.828117][ T5083] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5081] mkdir("./file1", 0777) = 0 [pid 5079] <... sendfile resumed>) = 368640 [pid 5079] unlink("./bus" [pid 5081] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5079] <... unlink resumed>) = 0 [pid 5079] exit_group(0) = ? [pid 5079] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5059] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5059] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 52.875388][ T5083] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 52.887029][ T5081] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 52.901853][ T5081] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5083] <... mount resumed>) = 0 [pid 5081] <... mount resumed>) = 0 [pid 5059] getdents64(3, [pid 5083] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5081] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5083] chdir("./file1" [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5083] <... chdir resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5081] <... openat resumed>) = 3 [pid 5059] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5081] chdir("./file1") = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5083] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5081] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./1/binderfs" [pid 5083] <... open resumed>) = 4 [pid 5081] <... open resumed>) = 4 [pid 5083] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5081] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5083] ftruncate(5, 33587195 [pid 5081] <... open resumed>) = 5 [pid 5081] ftruncate(5, 33587195 [pid 5083] <... ftruncate resumed>) = 0 [pid 5081] <... ftruncate resumed>) = 0 [pid 5078] <... sendfile resumed>) = 368640 [pid 5059] <... unlink resumed>) = 0 [pid 5083] sendfile(4, 5, NULL, 281474978811909 [pid 5081] sendfile(4, 5, NULL, 281474978811909 [pid 5078] unlink("./bus" [pid 5076] <... sendfile resumed>) = 368640 [pid 5059] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5078] <... unlink resumed>) = 0 [ 52.929572][ T5086] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 52.941368][ T5087] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5076] unlink("./bus" [pid 5078] exit_group(0) = ? [pid 5076] <... unlink resumed>) = 0 [pid 5076] exit_group(0) = ? [pid 5059] <... umount2 resumed>) = 0 [pid 5078] +++ exited with 0 +++ [pid 5076] +++ exited with 0 +++ [pid 5059] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./1/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5077] <... sendfile resumed>) = 368640 [pid 5059] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5077] unlink("./bus" [pid 5059] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5056] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5056] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5077] <... unlink resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... openat resumed>) = 3 [pid 5054] <... openat resumed>) = 3 [pid 5077] exit_group(0 [pid 5059] getdents64(4, [pid 5056] newfstatat(3, "", [pid 5054] newfstatat(3, "", [pid 5077] <... exit_group resumed>) = ? [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./1/binderfs") = 0 [pid 5054] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] close(4 [pid 5056] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./1/file1") = 0 [pid 5059] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] close(3) = 0 [pid 5059] rmdir("./1" [pid 5056] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./1/binderfs") = 0 [pid 5056] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5059] mkdir("./2", 0777) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5077] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 5056] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./1/file1", [pid 5083] <... sendfile resumed>) = 368640 [pid 5081] <... sendfile resumed>) = 368640 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5054] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5083] unlink("./bus" [pid 5081] unlink("./bus" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./1/file1", [pid 5056] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5054] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(4, "", [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5081] <... unlink resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5081] exit_group(0 [pid 5056] getdents64(4, [pid 5054] <... openat resumed>) = 4 [pid 5058] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5081] <... exit_group resumed>) = ? [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5083] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(4, "", [pid 5058] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] getdents64(4, [pid 5058] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5083] exit_group(0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5083] <... exit_group resumed>) = ? [pid 5058] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] getdents64(4, [pid 5059] <... ioctl resumed>) = 0 [pid 5056] close(4 [pid 5059] close(3 [pid 5058] unlink("./1/binderfs" [pid 5056] <... close resumed>) = 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5056] rmdir("./1/file1" [pid 5058] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5054] close(4) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] getdents64(3, [pid 5054] rmdir("./1/file1" [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3 [pid 5054] <... rmdir resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5054] getdents64(3, [pid 5056] rmdir("./1" [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 ./strace-static-x86_64: Process 5088 attached [pid 5054] close(3 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5088 [pid 5056] <... rmdir resumed>) = 0 [pid 5054] <... close resumed>) = 0 [pid 5088] set_robust_list(0x55555695e660, 24 [pid 5081] +++ exited with 0 +++ [pid 5056] mkdir("./2", 0777 [pid 5054] rmdir("./1" [pid 5088] <... set_robust_list resumed>) = 0 [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5054] <... rmdir resumed>) = 0 [pid 5088] chdir("./2" [pid 5056] <... mkdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5055] restart_syscall(<... resuming interrupted clone ...> [pid 5088] <... chdir resumed>) = 0 [pid 5055] <... restart_syscall resumed>) = 0 [pid 5054] mkdir("./2", 0777 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5054] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5055] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] <... prctl resumed>) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5088] setpgid(0, 0 [pid 5056] <... openat resumed>) = 3 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... openat resumed>) = 3 [pid 5088] <... setpgid resumed>) = 0 [pid 5055] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] +++ exited with 0 +++ [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5055] <... openat resumed>) = 3 [pid 5055] newfstatat(3, "", [pid 5088] <... openat resumed>) = 3 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5088] write(3, "1000", 4 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5088] <... write resumed>) = 4 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5055] getdents64(3, [pid 5088] close(3 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5088] symlink("/dev/binderfs", "./binderfs" [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5088] <... symlink resumed>) = 0 [pid 5057] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] memfd_create("syzkaller", 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] <... memfd_create resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... openat resumed>) = 3 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] <... mmap resumed>) = 0x7f4da0c00000 [pid 5057] newfstatat(3, "", [pid 5055] newfstatat(AT_FDCWD, "./1/binderfs", [pid 5058] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, [pid 5055] unlink("./1/binderfs" [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] <... unlink resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./1/file1", [pid 5057] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./1/binderfs" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = 0 [pid 5058] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./1/file1") = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./1") = 0 [pid 5058] mkdir("./2", 0777) = 0 [pid 5088] <... write resumed>) = 2097152 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... umount2 resumed>) = 0 [pid 5055] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] munmap(0x7f4da0c00000, 138412032 [pid 5057] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./1/file1", [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5088] <... munmap resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] newfstatat(AT_FDCWD, "./1/file1", [pid 5055] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] <... ioctl resumed>) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5088] ioctl(4, LOOP_SET_FD, 3 [pid 5057] umount2("./1/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... openat resumed>) = 4 [pid 5054] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./1/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] newfstatat(4, "", [pid 5054] <... close resumed>) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] newfstatat(4, "", [pid 5055] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5055] getdents64(4, [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5089 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, [pid 5055] close(4 [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] <... close resumed>) = 0 [pid 5057] close(4 [pid 5055] rmdir("./1/file1" [pid 5057] <... close resumed>) = 0 [pid 5055] <... rmdir resumed>) = 0 ./strace-static-x86_64: Process 5089 attached [pid 5088] close(3 [pid 5057] rmdir("./1/file1" [pid 5089] set_robust_list(0x55555695e660, 24 [pid 5088] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5055] getdents64(3, [pid 5089] <... set_robust_list resumed>) = 0 [pid 5088] close(4 [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5089] chdir("./2" [pid 5088] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5088] mkdir("./file1", 0777 [pid 5089] <... chdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3 [pid 5057] close(3 [pid 5055] <... close resumed>) = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] <... mkdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5055] rmdir("./1" [pid 5089] <... prctl resumed>) = 0 [pid 5088] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5089] setpgid(0, 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5055] mkdir("./2", 0777 [pid 5089] <... setpgid resumed>) = 0 [pid 5057] rmdir("./1" [pid 5055] <... mkdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] mkdir("./2", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] <... openat resumed>) = 3 [pid 5089] write(3, "1000", 4./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x55555695e660, 24 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5090 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5090] chdir("./2") = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5089] <... write resumed>) = 4 [pid 5089] close(3 [pid 5090] <... prctl resumed>) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] <... close resumed>) = 0 [pid 5090] <... openat resumed>) = 3 [pid 5090] write(3, "1000", 4 [pid 5058] <... ioctl resumed>) = 0 [pid 5090] <... write resumed>) = 4 [pid 5089] symlink("/dev/binderfs", "./binderfs" [pid 5058] close(3 [pid 5090] close(3) = 0 [pid 5090] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... close resumed>) = 0 [pid 5090] <... symlink resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5089] <... symlink resumed>) = 0 [pid 5090] memfd_create("syzkaller", 0 [pid 5089] memfd_create("syzkaller", 0 [pid 5090] <... memfd_create resumed>) = 3 [pid 5089] <... memfd_create resumed>) = 3 [pid 5090] 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 5090] <... mmap resumed>) = 0x7f4da0c00000 [pid 5089] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5091 [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"..., 2097152./strace-static-x86_64: Process 5091 attached [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"..., 2097152 [ 53.207466][ T5088] loop5: detected capacity change from 0 to 4096 [ 53.236129][ T5088] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5091] set_robust_list(0x55555695e660, 24) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5091] chdir("./2") = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5090] <... write resumed>) = 2097152 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] munmap(0x7f4da0c00000, 138412032 [pid 5089] <... write resumed>) = 2097152 [pid 5088] <... mount resumed>) = 0 [pid 5057] close(3 [pid 5055] close(3 [pid 5091] <... openat resumed>) = 3 [pid 5089] munmap(0x7f4da0c00000, 138412032 [pid 5057] <... close resumed>) = 0 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5091] memfd_create("syzkaller", 0 [pid 5089] <... munmap resumed>) = 0 [pid 5091] <... memfd_create resumed>) = 3 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] <... close resumed>) = 0 [pid 5089] <... openat resumed>) = 4 [pid 5089] ioctl(4, LOOP_SET_FD, 3 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached [ 53.287153][ T5088] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [ 53.317216][ T5092] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ./strace-static-x86_64: Process 5094 attached [pid 5093] set_robust_list(0x55555695e660, 24 [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"..., 2097152 [pid 5090] <... munmap resumed>) = 0 [pid 5089] <... ioctl resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5093 [pid 5090] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5089] close(3 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5094 [pid 5094] set_robust_list(0x55555695e660, 24 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5090] <... openat resumed>) = 4 [pid 5089] <... close resumed>) = 0 [pid 5088] <... openat resumed>) = 3 [pid 5090] ioctl(4, LOOP_SET_FD, 3 [pid 5089] close(4 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] chdir("./2" [pid 5088] chdir("./file1" [pid 5094] chdir("./2" [pid 5093] <... chdir resumed>) = 0 [pid 5088] <... chdir resumed>) = 0 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5093] <... prctl resumed>) = 0 [pid 5088] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] setpgid(0, 0 [pid 5088] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5094] <... chdir resumed>) = 0 [pid 5093] <... setpgid resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] <... prctl resumed>) = 0 [pid 5094] setpgid(0, 0) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1000", 4 [pid 5093] write(3, "1000", 4 [pid 5094] <... write resumed>) = 4 [pid 5093] <... write resumed>) = 4 [pid 5094] close(3 [pid 5093] close(3 [pid 5094] <... close resumed>) = 0 [pid 5093] <... close resumed>) = 0 [pid 5094] symlink("/dev/binderfs", "./binderfs" [pid 5089] mkdir("./file1", 0777 [pid 5093] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5094] <... symlink resumed>) = 0 [pid 5089] <... mkdir resumed>) = 0 [pid 5093] memfd_create("syzkaller", 0 [pid 5089] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5094] memfd_create("syzkaller", 0 [pid 5093] <... memfd_create resumed>) = 3 [pid 5094] <... memfd_create resumed>) = 3 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5093] <... mmap resumed>) = 0x7f4da0c00000 [pid 5094] <... mmap resumed>) = 0x7f4da0c00000 [pid 5088] <... open resumed>) = 4 [pid 5090] <... ioctl resumed>) = 0 [pid 5088] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5090] close(3) = 0 [pid 5088] <... open resumed>) = 5 [ 53.353844][ T5089] loop0: detected capacity change from 0 to 4096 [ 53.373146][ T5090] loop2: detected capacity change from 0 to 4096 [pid 5088] ftruncate(5, 33587195 [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"..., 2097152 [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"..., 2097152 [pid 5091] <... write resumed>) = 2097152 [pid 5090] close(4 [pid 5088] <... ftruncate resumed>) = 0 [pid 5088] sendfile(4, 5, NULL, 281474978811909 [pid 5091] munmap(0x7f4da0c00000, 138412032 [pid 5090] <... close resumed>) = 0 [pid 5090] mkdir("./file1", 0777 [pid 5091] <... munmap resumed>) = 0 [pid 5090] <... mkdir resumed>) = 0 [ 53.397534][ T5089] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 53.408697][ T5089] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5091] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5090] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5091] <... openat resumed>) = 4 [pid 5091] ioctl(4, LOOP_SET_FD, 3 [pid 5094] <... write resumed>) = 2097152 [pid 5093] <... write resumed>) = 2097152 [pid 5094] munmap(0x7f4da0c00000, 138412032 [pid 5093] munmap(0x7f4da0c00000, 138412032 [pid 5094] <... munmap resumed>) = 0 [pid 5093] <... munmap resumed>) = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5093] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5094] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5093] ioctl(4, LOOP_SET_FD, 3 [pid 5091] <... ioctl resumed>) = 0 [pid 5094] close(3) = 0 [pid 5094] close(4) = 0 [ 53.453194][ T5091] loop4: detected capacity change from 0 to 4096 [ 53.459903][ T5090] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 53.469531][ T5095] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 53.475313][ T5094] loop1: detected capacity change from 0 to 4096 [ 53.488039][ T5093] loop3: detected capacity change from 0 to 4096 [pid 5094] mkdir("./file1", 0777) = 0 [pid 5094] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5091] close(3 [pid 5089] <... mount resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5091] close(4 [pid 5089] <... openat resumed>) = 3 [pid 5091] <... close resumed>) = 0 [pid 5091] mkdir("./file1", 0777 [pid 5089] chdir("./file1" [pid 5093] <... ioctl resumed>) = 0 [pid 5091] <... mkdir resumed>) = 0 [pid 5089] <... chdir resumed>) = 0 [pid 5093] close(3 [pid 5091] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5093] <... close resumed>) = 0 [pid 5093] close(4) = 0 [pid 5093] mkdir("./file1", 0777) = 0 [pid 5089] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 53.494623][ T5090] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 53.500937][ T5094] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 53.526334][ T5091] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 53.526672][ T5093] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5089] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5090] <... mount resumed>) = 0 [pid 5090] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5090] chdir("./file1") = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5090] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5089] <... open resumed>) = 4 [pid 5089] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5089] ftruncate(5, 33587195) = 0 [ 53.547080][ T5094] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 53.558818][ T5096] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 53.579308][ T5093] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 53.589691][ T5091] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5089] sendfile(4, 5, NULL, 281474978811909 [pid 5090] <... open resumed>) = 4 [pid 5090] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5094] <... mount resumed>) = 0 [pid 5090] <... open resumed>) = 5 [pid 5094] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5090] ftruncate(5, 33587195 [pid 5094] <... openat resumed>) = 3 [pid 5090] <... ftruncate resumed>) = 0 [pid 5090] sendfile(4, 5, NULL, 281474978811909 [pid 5094] chdir("./file1") = 0 [pid 5094] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5093] <... mount resumed>) = 0 [pid 5093] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5093] chdir("./file1") = 0 [ 53.603014][ T5097] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 53.636341][ T5098] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5094] <... open resumed>) = 4 [pid 5093] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5094] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5093] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5094] <... open resumed>) = 5 [pid 5094] ftruncate(5, 33587195) = 0 [pid 5091] <... mount resumed>) = 0 [pid 5094] sendfile(4, 5, NULL, 281474978811909 [pid 5091] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5093] <... open resumed>) = 4 [pid 5091] <... openat resumed>) = 3 [pid 5093] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5091] chdir("./file1") = 0 [pid 5093] <... open resumed>) = 5 [pid 5091] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5093] ftruncate(5, 33587195 [pid 5091] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5093] <... ftruncate resumed>) = 0 [ 53.656214][ T5099] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5093] sendfile(4, 5, NULL, 281474978811909 [pid 5091] <... open resumed>) = 4 [pid 5091] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5091] ftruncate(5, 33587195) = 0 [pid 5091] sendfile(4, 5, NULL, 281474978811909 [pid 5089] <... sendfile resumed>) = 368640 [pid 5089] unlink("./bus") = 0 [pid 5088] <... sendfile resumed>) = 368640 [pid 5089] exit_group(0 [pid 5088] unlink("./bus" [pid 5089] <... exit_group resumed>) = ? [pid 5088] <... unlink resumed>) = 0 [pid 5088] exit_group(0) = ? [pid 5089] +++ exited with 0 +++ [pid 5093] <... sendfile resumed>) = 368640 [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5093] unlink("./bus" [pid 5054] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5093] <... unlink resumed>) = 0 [pid 5093] exit_group(0) = ? [pid 5088] +++ exited with 0 +++ [pid 5054] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5091] <... sendfile resumed>) = 368640 [pid 5091] unlink("./bus" [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... openat resumed>) = 3 [pid 5054] newfstatat(3, "", [pid 5059] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5054] getdents64(3, [pid 5091] <... unlink resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5091] exit_group(0 [pid 5059] getdents64(3, [pid 5091] <... exit_group resumed>) = ? [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] unlink("./2/binderfs" [pid 5059] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] <... unlink resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5054] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] unlink("./2/binderfs") = 0 [pid 5059] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5090] <... sendfile resumed>) = 368640 [pid 5090] unlink("./bus" [pid 5093] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5090] <... unlink resumed>) = 0 [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5091] +++ exited with 0 +++ [pid 5090] exit_group(0 [pid 5057] <... restart_syscall resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5090] <... exit_group resumed>) = ? [pid 5058] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(3, "", [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] newfstatat(AT_FDCWD, "./2/file1", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] unlink("./2/binderfs") = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5057] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] unlink("./2/binderfs" [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] <... unlink resumed>) = 0 [pid 5054] newfstatat(4, "", [pid 5059] <... umount2 resumed>) = 0 [pid 5059] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] newfstatat(AT_FDCWD, "./2/file1", [pid 5054] getdents64(4, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] close(4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... close resumed>) = 0 [pid 5054] rmdir("./2/file1" [pid 5059] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] <... rmdir resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5054] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5054] close(3 [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, [pid 5054] <... close resumed>) = 0 [pid 5054] rmdir("./2") = 0 [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5054] mkdir("./3", 0777 [pid 5059] <... close resumed>) = 0 [pid 5054] <... mkdir resumed>) = 0 [pid 5059] rmdir("./2/file1" [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... rmdir resumed>) = 0 [pid 5059] getdents64(3, [pid 5054] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5059] close(3) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] rmdir("./2" [pid 5057] newfstatat(AT_FDCWD, "./2/file1", [pid 5059] <... rmdir resumed>) = 0 [pid 5090] +++ exited with 0 +++ [pid 5058] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] mkdir("./3", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... mkdir resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./2/file1", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5056] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 3 [pid 5058] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 4 [pid 5056] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5058] <... openat resumed>) = 4 [pid 5057] getdents64(4, [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] newfstatat(4, "", [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] newfstatat(AT_FDCWD, "./2/binderfs", [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] close(4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] getdents64(4, [pid 5057] <... close resumed>) = 0 [pid 5056] unlink("./2/binderfs" [pid 5094] <... sendfile resumed>) = 368640 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] rmdir("./2/file1" [pid 5094] unlink("./bus" [pid 5058] close(4 [pid 5056] <... unlink resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./2/file1" [pid 5057] getdents64(3, [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5056] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5094] <... unlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./2" [pid 5056] <... umount2 resumed>) = 0 [pid 5058] rmdir("./2" [pid 5094] exit_group(0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5094] <... exit_group resumed>) = ? [pid 5057] mkdir("./3", 0777 [pid 5058] mkdir("./3", 0777 [pid 5057] <... mkdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5054] <... ioctl resumed>) = 0 [pid 5094] +++ exited with 0 +++ [pid 5056] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] close(3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5054] <... close resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./2/file1", [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5100 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./2/binderfs") = 0 [pid 5055] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY./strace-static-x86_64: Process 5100 attached ) = 4 [pid 5100] set_robust_list(0x55555695e660, 24 [pid 5056] newfstatat(4, "", [pid 5100] <... set_robust_list resumed>) = 0 [pid 5100] chdir("./3" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5100] <... chdir resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] getdents64(4, [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5100] setpgid(0, 0) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5100] write(3, "1000", 4 [pid 5059] close(3 [pid 5056] getdents64(4, [pid 5100] <... write resumed>) = 4 [pid 5059] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5100] close(3 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] close(4./strace-static-x86_64: Process 5101 attached [pid 5100] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5100] symlink("/dev/binderfs", "./binderfs" [pid 5056] rmdir("./2/file1" [pid 5100] <... symlink resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] getdents64(3, [pid 5055] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5101] set_robust_list(0x55555695e660, 24 [pid 5100] memfd_create("syzkaller", 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5101] <... set_robust_list resumed>) = 0 [pid 5100] <... memfd_create resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5101 [pid 5056] close(3 [pid 5055] newfstatat(AT_FDCWD, "./2/file1", [pid 5101] chdir("./3" [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5056] <... close resumed>) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5100] <... mmap resumed>) = 0x7f4da0c00000 [pid 5056] rmdir("./2" [pid 5101] <... chdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5055] umount2("./2/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] mkdir("./3", 0777) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5056] <... openat resumed>) = 3 [pid 5055] openat(AT_FDCWD, "./2/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5101] <... prctl resumed>) = 0 [pid 5055] <... openat resumed>) = 4 [pid 5101] setpgid(0, 0) = 0 [pid 5055] newfstatat(4, "", [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4) = 0 [pid 5055] rmdir("./2/file1") = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 [pid 5055] rmdir("./2") = 0 [pid 5055] mkdir("./3", 0777 [pid 5101] <... openat resumed>) = 3 [pid 5055] <... mkdir resumed>) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5101] write(3, "1000", 4 [pid 5100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5101] <... write resumed>) = 4 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5101] close(3 [pid 5058] close(3 [pid 5057] close(3 [pid 5058] <... close resumed>) = 0 [pid 5101] <... close resumed>) = 0 [pid 5101] symlink("/dev/binderfs", "./binderfs" [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... close resumed>) = 0 [pid 5101] <... symlink resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x55555695e660, 24) = 0 [pid 5102] chdir("./3" [pid 5101] memfd_create("syzkaller", 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5102 [pid 5102] <... chdir resumed>) = 0 [pid 5101] <... memfd_create resumed>) = 3 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5103 ./strace-static-x86_64: Process 5103 attached [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5103] set_robust_list(0x55555695e660, 24 [pid 5102] <... prctl resumed>) = 0 [pid 5101] <... mmap resumed>) = 0x7f4da0c00000 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5102] setpgid(0, 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5102] <... setpgid resumed>) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5103] chdir("./3" [pid 5102] <... openat resumed>) = 3 [pid 5101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5100] <... write resumed>) = 2097152 [pid 5056] close(3) = 0 [pid 5103] <... chdir resumed>) = 0 [pid 5102] write(3, "1000", 4 [pid 5100] munmap(0x7f4da0c00000, 138412032 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] <... ioctl resumed>) = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5102] <... write resumed>) = 4 [pid 5103] <... prctl resumed>) = 0 [pid 5102] close(3 [pid 5103] setpgid(0, 0 [pid 5102] <... close resumed>) = 0 [pid 5103] <... setpgid resumed>) = 0 [pid 5102] symlink("/dev/binderfs", "./binderfs" [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5102] <... symlink resumed>) = 0 ./strace-static-x86_64: Process 5104 attached [pid 5103] <... openat resumed>) = 3 [pid 5102] memfd_create("syzkaller", 0 [pid 5100] <... munmap resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5104 [pid 5104] set_robust_list(0x55555695e660, 24 [pid 5103] write(3, "1000", 4 [pid 5102] <... memfd_create resumed>) = 3 [pid 5104] <... set_robust_list resumed>) = 0 [pid 5103] <... write resumed>) = 4 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5104] chdir("./3" [pid 5103] close(3 [pid 5102] <... mmap resumed>) = 0x7f4da0c00000 [pid 5104] <... chdir resumed>) = 0 [pid 5103] <... close resumed>) = 0 [pid 5101] <... write resumed>) = 2097152 [pid 5100] <... openat resumed>) = 4 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5103] symlink("/dev/binderfs", "./binderfs" [pid 5101] munmap(0x7f4da0c00000, 138412032 [pid 5100] ioctl(4, LOOP_SET_FD, 3 [pid 5104] <... prctl resumed>) = 0 [pid 5103] <... symlink resumed>) = 0 [pid 5055] close(3 [pid 5104] setpgid(0, 0 [pid 5103] memfd_create("syzkaller", 0 [pid 5055] <... close resumed>) = 0 [pid 5103] <... memfd_create resumed>) = 3 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5105 attached ) = 0x7f4da0c00000 [pid 5102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5104] <... setpgid resumed>) = 0 [pid 5101] <... munmap resumed>) = 0 [pid 5105] set_robust_list(0x55555695e660, 24 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5105 [pid 5105] <... set_robust_list resumed>) = 0 [pid 5104] <... openat resumed>) = 3 [pid 5101] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5100] <... ioctl resumed>) = 0 [pid 5105] chdir("./3" [pid 5103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5101] <... openat resumed>) = 4 [pid 5100] close(3 [pid 5105] <... chdir resumed>) = 0 [pid 5104] write(3, "1000", 4 [pid 5101] ioctl(4, LOOP_SET_FD, 3 [pid 5100] <... close resumed>) = 0 [pid 5104] <... write resumed>) = 4 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5104] close(3 [pid 5101] <... ioctl resumed>) = 0 [pid 5100] close(4 [pid 5104] <... close resumed>) = 0 [pid 5105] <... prctl resumed>) = 0 [pid 5105] setpgid(0, 0) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5104] symlink("/dev/binderfs", "./binderfs" [pid 5105] <... openat resumed>) = 3 [pid 5104] <... symlink resumed>) = 0 [pid 5105] write(3, "1000", 4 [pid 5104] memfd_create("syzkaller", 0 [pid 5105] <... write resumed>) = 4 [pid 5104] <... memfd_create resumed>) = 3 [pid 5100] <... close resumed>) = 0 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5100] mkdir("./file1", 0777 [pid 5105] close(3) = 0 [pid 5100] <... mkdir resumed>) = 0 [pid 5105] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5104] <... mmap resumed>) = 0x7f4da0c00000 [pid 5101] close(3 [pid 5100] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5105] memfd_create("syzkaller", 0) = 3 [pid 5101] <... close resumed>) = 0 [pid 5101] close(4 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5101] <... close resumed>) = 0 [pid 5101] mkdir("./file1", 0777 [pid 5102] <... write resumed>) = 2097152 [pid 5101] <... mkdir resumed>) = 0 [ 54.093198][ T5100] loop0: detected capacity change from 0 to 4096 [ 54.111104][ T5101] loop5: detected capacity change from 0 to 4096 [pid 5101] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5102] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5103] <... write resumed>) = 2097152 [pid 5103] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5103] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5102] <... openat resumed>) = 4 [pid 5103] <... openat resumed>) = 4 [ 54.147870][ T5101] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 54.160090][ T5100] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 54.172079][ T5100] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 54.181484][ T5102] loop4: detected capacity change from 0 to 4096 [ 54.188619][ T5101] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5102] ioctl(4, LOOP_SET_FD, 3 [pid 5103] ioctl(4, LOOP_SET_FD, 3 [pid 5105] <... write resumed>) = 2097152 [pid 5104] <... write resumed>) = 2097152 [pid 5103] <... ioctl resumed>) = 0 [pid 5102] <... ioctl resumed>) = 0 [pid 5100] <... mount resumed>) = 0 [pid 5104] munmap(0x7f4da0c00000, 138412032 [pid 5103] close(3 [pid 5100] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5102] close(3 [pid 5100] <... openat resumed>) = 3 [pid 5102] <... close resumed>) = 0 [pid 5102] close(4 [pid 5104] <... munmap resumed>) = 0 [pid 5103] <... close resumed>) = 0 [pid 5100] chdir("./file1" [pid 5104] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5103] close(4 [pid 5100] <... chdir resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5103] <... close resumed>) = 0 [pid 5105] munmap(0x7f4da0c00000, 138412032 [pid 5103] mkdir("./file1", 0777 [pid 5102] <... close resumed>) = 0 [pid 5100] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5105] <... munmap resumed>) = 0 [pid 5103] <... mkdir resumed>) = 0 [pid 5102] mkdir("./file1", 0777 [pid 5100] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5103] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5102] <... mkdir resumed>) = 0 [pid 5104] <... openat resumed>) = 4 [pid 5104] ioctl(4, LOOP_SET_FD, 3 [pid 5102] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5105] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [ 54.194686][ T5103] loop3: detected capacity change from 0 to 4096 [ 54.204530][ T5106] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 54.233149][ T5104] loop2: detected capacity change from 0 to 4096 [ 54.233996][ T5105] loop1: detected capacity change from 0 to 4096 [pid 5105] ioctl(4, LOOP_SET_FD, 3 [pid 5104] <... ioctl resumed>) = 0 [pid 5104] close(3) = 0 [pid 5105] <... ioctl resumed>) = 0 [pid 5100] <... open resumed>) = 4 [pid 5100] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5104] close(4 [pid 5100] <... open resumed>) = 5 [pid 5104] <... close resumed>) = 0 [pid 5104] mkdir("./file1", 0777) = 0 [ 54.245840][ T5103] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 54.257489][ T5102] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 54.257677][ T5103] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 54.285431][ T5102] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5104] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5100] ftruncate(5, 33587195 [pid 5105] close(3) = 0 [pid 5105] close(4) = 0 [pid 5105] mkdir("./file1", 0777) = 0 [pid 5100] <... ftruncate resumed>) = 0 [pid 5100] sendfile(4, 5, NULL, 281474978811909 [pid 5105] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5101] <... mount resumed>) = 0 [pid 5101] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 54.300100][ T5104] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 54.317818][ T5107] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 54.331434][ T5105] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5101] chdir("./file1") = 0 [pid 5101] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5101] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5103] <... mount resumed>) = 0 [pid 5103] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 54.353101][ T5104] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 54.369860][ T5105] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 54.372017][ T5108] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5103] chdir("./file1" [pid 5102] <... mount resumed>) = 0 [pid 5101] <... open resumed>) = 4 [pid 5103] <... chdir resumed>) = 0 [pid 5102] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5101] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5102] <... openat resumed>) = 3 [pid 5103] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5102] chdir("./file1" [pid 5101] <... open resumed>) = 5 [pid 5103] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5102] <... chdir resumed>) = 0 [pid 5105] <... mount resumed>) = 0 [pid 5105] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5105] chdir("./file1") = 0 [pid 5105] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5105] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5101] ftruncate(5, 33587195 [pid 5105] <... open resumed>) = 4 [pid 5104] <... mount resumed>) = 0 [pid 5103] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5102] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5105] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5104] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5105] <... open resumed>) = 5 [pid 5104] <... openat resumed>) = 3 [pid 5102] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5101] <... ftruncate resumed>) = 0 [pid 5105] ftruncate(5, 33587195 [pid 5104] chdir("./file1" [pid 5103] <... open resumed>) = 4 [pid 5101] sendfile(4, 5, NULL, 281474978811909 [pid 5105] <... ftruncate resumed>) = 0 [pid 5104] <... chdir resumed>) = 0 [pid 5103] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5102] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5105] sendfile(4, 5, NULL, 281474978811909 [pid 5104] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5103] <... open resumed>) = 5 [pid 5104] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5104] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5103] ftruncate(5, 33587195 [pid 5102] <... open resumed>) = 4 [pid 5102] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5102] ftruncate(5, 33587195) = 0 [pid 5102] sendfile(4, 5, NULL, 281474978811909 [pid 5104] <... open resumed>) = 4 [pid 5104] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5103] <... ftruncate resumed>) = 0 [pid 5103] sendfile(4, 5, NULL, 281474978811909 [pid 5104] <... open resumed>) = 5 [pid 5104] ftruncate(5, 33587195) = 0 [ 54.401157][ T5110] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 54.405946][ T5109] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 54.424697][ T5111] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5104] sendfile(4, 5, NULL, 281474978811909 [pid 5101] <... sendfile resumed>) = 368640 [pid 5100] <... sendfile resumed>) = 368640 [pid 5101] unlink("./bus" [pid 5100] unlink("./bus") = 0 [pid 5100] exit_group(0) = ? [pid 5101] <... unlink resumed>) = 0 [pid 5101] exit_group(0) = ? [pid 5102] <... sendfile resumed>) = 368640 [pid 5102] unlink("./bus") = 0 [pid 5105] <... sendfile resumed>) = 368640 [pid 5102] exit_group(0 [pid 5105] unlink("./bus" [pid 5102] <... exit_group resumed>) = ? [pid 5105] <... unlink resumed>) = 0 [pid 5105] exit_group(0) = ? [pid 5100] +++ exited with 0 +++ [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5054] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5104] <... sendfile resumed>) = 368640 [pid 5054] <... openat resumed>) = 3 [pid 5104] unlink("./bus" [pid 5054] newfstatat(3, "", [pid 5104] <... unlink resumed>) = 0 [pid 5101] +++ exited with 0 +++ [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5104] exit_group(0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5054] getdents64(3, [pid 5104] <... exit_group resumed>) = ? [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./3/binderfs") = 0 [pid 5059] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, [pid 5105] +++ exited with 0 +++ [pid 5104] +++ exited with 0 +++ [pid 5103] <... sendfile resumed>) = 368640 [pid 5102] +++ exited with 0 +++ [pid 5054] <... umount2 resumed>) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5103] unlink("./bus" [pid 5059] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5054] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5055] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5056] <... openat resumed>) = 3 [pid 5055] <... openat resumed>) = 3 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] unlink("./3/binderfs" [pid 5058] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] newfstatat(AT_FDCWD, "./3/file1", [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(3, "", [pid 5055] newfstatat(3, "", [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5103] <... unlink resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5056] getdents64(3, [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5103] exit_group(0 [pid 5058] newfstatat(3, "", [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5103] <... exit_group resumed>) = ? [pid 5058] getdents64(3, [pid 5056] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... openat resumed>) = 4 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5054] newfstatat(4, "", [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] unlink("./3/binderfs" [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... unlink resumed>) = 0 [pid 5055] unlink("./3/binderfs" [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] getdents64(4, [pid 5058] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] getdents64(4, [pid 5058] unlink("./3/binderfs" [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5054] close(4 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... close resumed>) = 0 [pid 5054] rmdir("./3/file1" [pid 5059] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = 0 [pid 5054] <... rmdir resumed>) = 0 [pid 5103] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = 0 [pid 5056] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = 0 [pid 5054] getdents64(3, [pid 5059] newfstatat(AT_FDCWD, "./3/file1", [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5058] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./3/file1", [pid 5055] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./3/file1", [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./3/file1", [pid 5054] close(3 [pid 5059] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] <... close resumed>) = 0 [pid 5059] <... openat resumed>) = 4 [pid 5057] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] rmdir("./3" [pid 5059] newfstatat(4, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... rmdir resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 3 [pid 5059] getdents64(4, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... openat resumed>) = 4 [pid 5054] mkdir("./4", 0777 [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", [pid 5056] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] newfstatat(4, "", [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5058] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... mkdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] getdents64(3, [pid 5056] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] getdents64(4, [pid 5058] newfstatat(4, "", [pid 5059] close(4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... openat resumed>) = 4 [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5059] <... close resumed>) = 0 [pid 5057] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(4, "", [pid 5055] getdents64(4, [pid 5059] rmdir("./3/file1" [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... rmdir resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] newfstatat(AT_FDCWD, "./3/binderfs", [pid 5056] getdents64(4, [pid 5055] close(4 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] getdents64(3, [pid 5058] close(4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] <... close resumed>) = 0 [pid 5054] <... openat resumed>) = 3 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] unlink("./3/binderfs" [pid 5056] getdents64(4, [pid 5055] rmdir("./3/file1" [pid 5059] close(3 [pid 5058] rmdir("./3/file1" [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5059] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] close(4 [pid 5057] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5059] rmdir("./3" [pid 5058] getdents64(3, [pid 5057] <... umount2 resumed>) = 0 [pid 5056] rmdir("./3/file1" [pid 5055] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5055] close(3 [pid 5058] <... close resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5058] rmdir("./3" [pid 5059] mkdir("./4", 0777 [pid 5057] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5055] rmdir("./3" [pid 5058] <... rmdir resumed>) = 0 [pid 5056] getdents64(3, [pid 5059] <... mkdir resumed>) = 0 [pid 5058] mkdir("./4", 0777 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5055] mkdir("./4", 0777 [pid 5057] newfstatat(AT_FDCWD, "./3/file1", [pid 5056] close(3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... close resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] umount2("./3/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] rmdir("./3" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] openat(AT_FDCWD, "./3/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... rmdir resumed>) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5056] mkdir("./4", 0777 [pid 5059] <... openat resumed>) = 3 [pid 5058] <... openat resumed>) = 3 [pid 5057] <... openat resumed>) = 4 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] newfstatat(4, "", [pid 5056] <... mkdir resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... openat resumed>) = 3 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5057] rmdir("./3/file1") = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./3") = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5057] mkdir("./4", 0777 [pid 5054] close(3 [pid 5057] <... mkdir resumed>) = 0 [pid 5054] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5112 attached [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5112 [pid 5112] set_robust_list(0x55555695e660, 24) = 0 [pid 5112] chdir("./4") = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5112] setpgid(0, 0) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5112] write(3, "1000", 4) = 4 [pid 5112] close(3) = 0 [pid 5112] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5112] memfd_create("syzkaller", 0) = 3 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5059] close(3) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5113 attached , child_tidptr=0x55555695e650) = 5113 [pid 5113] set_robust_list(0x55555695e660, 24) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] chdir("./4" [pid 5055] close(3) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] <... chdir resumed>) = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5114 attached [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5114 [pid 5113] <... prctl resumed>) = 0 [pid 5114] set_robust_list(0x55555695e660, 24) = 0 [pid 5113] setpgid(0, 0 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5115 [pid 5114] chdir("./4" [pid 5113] <... setpgid resumed>) = 0 [pid 5114] <... chdir resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5115 attached [pid 5115] set_robust_list(0x55555695e660, 24) = 0 [pid 5115] chdir("./4") = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5113] <... openat resumed>) = 3 [pid 5114] <... prctl resumed>) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5115] setpgid(0, 0) = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5115] write(3, "1000", 4) = 4 [pid 5115] close(3 [pid 5114] setpgid(0, 0 [pid 5113] write(3, "1000", 4 [pid 5056] <... ioctl resumed>) = 0 [pid 5115] <... close resumed>) = 0 [pid 5114] <... setpgid resumed>) = 0 [pid 5115] symlink("/dev/binderfs", "./binderfs" [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5113] <... write resumed>) = 4 [pid 5113] close(3 [pid 5112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5115] <... symlink resumed>) = 0 [pid 5114] <... openat resumed>) = 3 [pid 5113] <... close resumed>) = 0 [pid 5056] close(3 [pid 5113] symlink("/dev/binderfs", "./binderfs" [pid 5115] memfd_create("syzkaller", 0 [pid 5113] <... symlink resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] memfd_create("syzkaller", 0 [pid 5115] <... memfd_create resumed>) = 3 [pid 5114] write(3, "1000", 4 [pid 5113] <... memfd_create resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5116 [pid 5114] <... write resumed>) = 4 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5116 attached [pid 5116] set_robust_list(0x55555695e660, 24 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] close(3 [pid 5113] <... mmap resumed>) = 0x7f4da0c00000 [pid 5057] <... ioctl resumed>) = 0 [pid 5116] <... set_robust_list resumed>) = 0 [pid 5114] <... close resumed>) = 0 [pid 5116] chdir("./4") = 0 [pid 5115] <... mmap resumed>) = 0x7f4da0c00000 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5114] symlink("/dev/binderfs", "./binderfs" [pid 5113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] close(3 [pid 5116] <... prctl resumed>) = 0 [pid 5116] setpgid(0, 0 [pid 5114] <... symlink resumed>) = 0 [pid 5116] <... setpgid resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5114] memfd_create("syzkaller", 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5112] <... write resumed>) = 2097152 [pid 5112] munmap(0x7f4da0c00000, 138412032./strace-static-x86_64: Process 5117 attached [pid 5116] <... openat resumed>) = 3 [pid 5114] <... memfd_create resumed>) = 3 [pid 5113] <... write resumed>) = 2097152 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5117 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5116] write(3, "1000", 4 [pid 5117] set_robust_list(0x55555695e660, 24 [pid 5116] <... write resumed>) = 4 [pid 5114] <... mmap resumed>) = 0x7f4da0c00000 [pid 5117] <... set_robust_list resumed>) = 0 [pid 5113] munmap(0x7f4da0c00000, 138412032 [pid 5117] chdir("./4") = 0 [pid 5116] close(3 [pid 5113] <... munmap resumed>) = 0 [pid 5112] <... munmap resumed>) = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5116] <... close resumed>) = 0 [pid 5117] <... prctl resumed>) = 0 [pid 5116] symlink("/dev/binderfs", "./binderfs" [pid 5117] setpgid(0, 0 [pid 5116] <... symlink resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5117] <... setpgid resumed>) = 0 [pid 5113] <... openat resumed>) = 4 [pid 5112] <... openat resumed>) = 4 [pid 5116] memfd_create("syzkaller", 0 [pid 5113] ioctl(4, LOOP_SET_FD, 3 [pid 5112] ioctl(4, LOOP_SET_FD, 3 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] <... write resumed>) = 2097152 [pid 5112] <... ioctl resumed>) = 0 [pid 5112] close(3) = 0 [pid 5112] close(4) = 0 [pid 5117] <... openat resumed>) = 3 [pid 5116] <... memfd_create resumed>) = 3 [pid 5115] munmap(0x7f4da0c00000, 138412032 [pid 5114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5117] write(3, "1000", 4 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5117] <... write resumed>) = 4 [pid 5117] close(3 [pid 5112] mkdir("./file1", 0777 [pid 5115] <... munmap resumed>) = 0 [pid 5112] <... mkdir resumed>) = 0 [pid 5117] <... close resumed>) = 0 [pid 5117] symlink("/dev/binderfs", "./binderfs" [pid 5112] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5117] <... symlink resumed>) = 0 [pid 5115] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5117] memfd_create("syzkaller", 0) = 3 [pid 5116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5115] <... openat resumed>) = 4 [pid 5114] <... write resumed>) = 2097152 [pid 5113] <... ioctl resumed>) = 0 [ 55.003070][ T5113] loop5: detected capacity change from 0 to 4096 [ 55.003082][ T5112] loop0: detected capacity change from 0 to 4096 [ 55.035928][ T5112] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5115] ioctl(4, LOOP_SET_FD, 3 [pid 5114] munmap(0x7f4da0c00000, 138412032 [pid 5113] close(3 [pid 5114] <... munmap resumed>) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5113] <... close resumed>) = 0 [pid 5114] <... openat resumed>) = 4 [pid 5113] close(4) = 0 [pid 5115] <... ioctl resumed>) = 0 [pid 5113] mkdir("./file1", 0777 [pid 5115] close(3) = 0 [pid 5115] close(4) = 0 [pid 5115] mkdir("./file1", 0777 [pid 5117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5115] <... mkdir resumed>) = 0 [pid 5113] <... mkdir resumed>) = 0 [pid 5114] ioctl(4, LOOP_SET_FD, 3 [pid 5113] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5115] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5116] <... write resumed>) = 2097152 [ 55.047500][ T5115] loop1: detected capacity change from 0 to 4096 [ 55.073274][ T5114] loop4: detected capacity change from 0 to 4096 [ 55.080971][ T5115] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.093982][ T5112] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5117] <... write resumed>) = 2097152 [pid 5116] munmap(0x7f4da0c00000, 138412032 [pid 5114] <... ioctl resumed>) = 0 [pid 5114] close(3 [pid 5117] munmap(0x7f4da0c00000, 138412032 [pid 5116] <... munmap resumed>) = 0 [pid 5114] <... close resumed>) = 0 [pid 5117] <... munmap resumed>) = 0 [pid 5116] openat(AT_FDCWD, "/dev/loop2", O_RDWR [ 55.103733][ T5113] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.120176][ T5113] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [ 55.127356][ T5115] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 55.142009][ T5119] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5114] close(4 [pid 5117] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5116] <... openat resumed>) = 4 [pid 5114] <... close resumed>) = 0 [pid 5114] mkdir("./file1", 0777 [pid 5116] ioctl(4, LOOP_SET_FD, 3 [pid 5114] <... mkdir resumed>) = 0 [pid 5114] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5112] <... mount resumed>) = 0 [pid 5112] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5117] <... openat resumed>) = 4 [pid 5112] <... openat resumed>) = 3 [pid 5112] chdir("./file1" [pid 5117] ioctl(4, LOOP_SET_FD, 3 [pid 5112] <... chdir resumed>) = 0 [pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5112] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5117] <... ioctl resumed>) = 0 [pid 5116] <... ioctl resumed>) = 0 [pid 5113] <... mount resumed>) = 0 [pid 5113] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [ 55.153725][ T5116] loop2: detected capacity change from 0 to 4096 [ 55.160144][ T5118] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.175667][ T5117] loop3: detected capacity change from 0 to 4096 [ 55.179623][ T5120] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.194754][ T5114] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5116] close(3 [pid 5117] close(3 [pid 5116] <... close resumed>) = 0 [pid 5113] <... openat resumed>) = 3 [pid 5116] close(4 [pid 5113] chdir("./file1" [pid 5117] <... close resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5115] <... mount resumed>) = 0 [pid 5113] <... chdir resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5117] close(4 [pid 5115] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5113] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] <... close resumed>) = 0 [pid 5116] mkdir("./file1", 0777 [pid 5115] <... openat resumed>) = 3 [pid 5113] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5117] mkdir("./file1", 0777 [pid 5115] chdir("./file1" [pid 5117] <... mkdir resumed>) = 0 [pid 5116] <... mkdir resumed>) = 0 [pid 5115] <... chdir resumed>) = 0 [pid 5112] <... open resumed>) = 4 [pid 5117] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5115] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5112] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5116] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5113] <... open resumed>) = 4 [pid 5115] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5115] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5113] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5112] <... open resumed>) = 5 [pid 5113] <... open resumed>) = 5 [pid 5112] ftruncate(5, 33587195 [pid 5115] <... open resumed>) = 4 [pid 5115] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5115] ftruncate(5, 33587195) = 0 [pid 5115] sendfile(4, 5, NULL, 281474978811909 [pid 5113] ftruncate(5, 33587195) = 0 [pid 5112] <... ftruncate resumed>) = 0 [ 55.205225][ T5114] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 55.223481][ T5117] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.235338][ T5116] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5112] sendfile(4, 5, NULL, 281474978811909 [pid 5113] sendfile(4, 5, NULL, 281474978811909 [pid 5114] <... mount resumed>) = 0 [pid 5114] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [ 55.248209][ T5121] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.263788][ T5116] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 55.277779][ T5117] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5114] chdir("./file1") = 0 [pid 5116] <... mount resumed>) = 0 [pid 5114] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5116] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5114] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5116] chdir("./file1") = 0 [pid 5114] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5116] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5116] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5116] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5116] ftruncate(5, 33587195) = 0 [pid 5116] sendfile(4, 5, NULL, 281474978811909 [pid 5117] <... mount resumed>) = 0 [pid 5114] <... open resumed>) = 4 [pid 5117] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5114] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5117] <... openat resumed>) = 3 [pid 5117] chdir("./file1" [pid 5114] ftruncate(5, 33587195 [pid 5117] <... chdir resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5117] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5114] <... ftruncate resumed>) = 0 [pid 5114] sendfile(4, 5, NULL, 281474978811909 [pid 5117] <... open resumed>) = 4 [pid 5117] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5117] ftruncate(5, 33587195) = 0 [ 55.302112][ T5122] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.320533][ T5123] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5117] sendfile(4, 5, NULL, 281474978811909 [pid 5115] <... sendfile resumed>) = 368640 [pid 5115] unlink("./bus") = 0 [pid 5115] exit_group(0) = ? [pid 5115] +++ exited with 0 +++ [pid 5113] <... sendfile resumed>) = 368640 [pid 5113] unlink("./bus" [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5055] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./4/binderfs") = 0 [pid 5055] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5116] <... sendfile resumed>) = 368640 [pid 5113] <... unlink resumed>) = 0 [pid 5116] unlink("./bus" [pid 5113] exit_group(0) = ? [pid 5116] <... unlink resumed>) = 0 [pid 5116] exit_group(0) = ? [pid 5114] <... sendfile resumed>) = 368640 [pid 5112] <... sendfile resumed>) = 368640 [pid 5055] <... umount2 resumed>) = 0 [pid 5114] unlink("./bus" [pid 5055] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5116] +++ exited with 0 +++ [pid 5114] <... unlink resumed>) = 0 [pid 5113] +++ exited with 0 +++ [pid 5112] unlink("./bus" [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5114] exit_group(0 [pid 5055] newfstatat(AT_FDCWD, "./4/file1", [pid 5114] <... exit_group resumed>) = ? [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5056] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5059] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] newfstatat(3, "", [pid 5056] unlink("./4/binderfs" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5059] getdents64(3, [pid 5112] <... unlink resumed>) = 0 [pid 5056] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5117] <... sendfile resumed>) = 368640 [pid 5112] exit_group(0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5112] <... exit_group resumed>) = ? [pid 5059] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(4, "", [pid 5059] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5117] unlink("./bus" [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5114] +++ exited with 0 +++ [pid 5059] unlink("./4/binderfs" [pid 5055] getdents64(4, [pid 5059] <... unlink resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5059] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] getdents64(4, [pid 5058] <... openat resumed>) = 3 [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] close(4 [pid 5058] getdents64(3, [pid 5117] <... unlink resumed>) = 0 [pid 5112] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... umount2 resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5117] exit_group(0 [pid 5059] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] rmdir("./4/file1" [pid 5117] <... exit_group resumed>) = ? [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./4/file1", [pid 5055] <... rmdir resumed>) = 0 [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5056] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] getdents64(3, [pid 5054] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] unlink("./4/binderfs" [pid 5056] newfstatat(AT_FDCWD, "./4/file1", [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... unlink resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5117] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5054] <... openat resumed>) = 3 [pid 5059] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5056] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] newfstatat(3, "", [pid 5059] <... openat resumed>) = 4 [pid 5056] <... openat resumed>) = 4 [pid 5055] <... close resumed>) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] newfstatat(4, "", [pid 5056] newfstatat(4, "", [pid 5055] rmdir("./4" [pid 5054] getdents64(3, [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] getdents64(4, [pid 5056] getdents64(4, [pid 5055] <... rmdir resumed>) = 0 [pid 5054] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] mkdir("./5", 0777 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] getdents64(4, [pid 5057] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5055] <... mkdir resumed>) = 0 [pid 5054] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] close(4 [pid 5057] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] close(4 [pid 5054] unlink("./4/binderfs" [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5054] <... unlink resumed>) = 0 [pid 5059] rmdir("./4/file1" [pid 5058] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(3, "", [pid 5056] rmdir("./4/file1" [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5054] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(3, [pid 5058] newfstatat(AT_FDCWD, "./4/file1", [pid 5057] getdents64(3, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] getdents64(3, [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5058] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] close(3 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5056] rmdir("./4" [pid 5058] newfstatat(4, "", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5056] mkdir("./5", 0777 [pid 5057] newfstatat(AT_FDCWD, "./4/binderfs", [pid 5056] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5057] unlink("./4/binderfs" [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(4, [pid 5057] <... unlink resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(4) = 0 [pid 5058] rmdir("./4/file1") = 0 [pid 5059] close(3 [pid 5057] <... umount2 resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] rmdir("./4" [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... rmdir resumed>) = 0 [pid 5058] getdents64(3, [pid 5055] <... ioctl resumed>) = 0 [pid 5054] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./4/file1", [pid 5059] mkdir("./5", 0777 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... mkdir resumed>) = 0 [pid 5058] close(3 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... close resumed>) = 0 [pid 5054] newfstatat(AT_FDCWD, "./4/file1", [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] <... openat resumed>) = 3 [pid 5057] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... close resumed>) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] umount2("./4/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(4) = 0 [pid 5057] rmdir("./4/file1" [pid 5058] rmdir("./4" [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... rmdir resumed>) = 0 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5124 ./strace-static-x86_64: Process 5124 attached [pid 5058] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5054] openat(AT_FDCWD, "./4/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5124] set_robust_list(0x55555695e660, 24 [pid 5058] mkdir("./5", 0777 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5124] <... set_robust_list resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5054] <... openat resumed>) = 4 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5056] close(3 [pid 5054] newfstatat(4, "", [pid 5124] chdir("./5" [pid 5058] <... openat resumed>) = 3 [pid 5056] <... close resumed>) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5054] getdents64(4, [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5124] <... chdir resumed>) = 0 [pid 5057] rmdir("./4" [pid 5054] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] close(4) = 0 [pid 5054] rmdir("./4/file1") = 0 [pid 5054] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [pid 5054] rmdir("./4"./strace-static-x86_64: Process 5125 attached ) = 0 [pid 5125] set_robust_list(0x55555695e660, 24) = 0 [pid 5054] mkdir("./5", 0777 [pid 5125] chdir("./5" [pid 5054] <... mkdir resumed>) = 0 [pid 5125] <... chdir resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5125 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... rmdir resumed>) = 0 [pid 5125] <... setpgid resumed>) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5124] <... prctl resumed>) = 0 [pid 5057] mkdir("./5", 0777 [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] setpgid(0, 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5054] <... openat resumed>) = 3 [pid 5125] <... openat resumed>) = 3 [pid 5124] <... setpgid resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5125] write(3, "1000", 4 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5125] <... write resumed>) = 4 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5125] close(3 [pid 5057] <... openat resumed>) = 3 [pid 5125] <... close resumed>) = 0 [pid 5125] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5125] memfd_create("syzkaller", 0 [pid 5124] <... openat resumed>) = 3 [pid 5125] <... memfd_create resumed>) = 3 [pid 5124] write(3, "1000", 4 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5124] <... write resumed>) = 4 [pid 5125] <... mmap resumed>) = 0x7f4da0c00000 [pid 5124] close(3) = 0 [pid 5125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5124] symlink("/dev/binderfs", "./binderfs" [pid 5059] <... ioctl resumed>) = 0 [pid 5124] <... symlink resumed>) = 0 [pid 5124] memfd_create("syzkaller", 0 [pid 5059] close(3 [pid 5124] <... memfd_create resumed>) = 3 [pid 5125] <... write resumed>) = 2097152 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5124] <... mmap resumed>) = 0x7f4da0c00000 ./strace-static-x86_64: Process 5126 attached [pid 5125] munmap(0x7f4da0c00000, 138412032 [pid 5126] set_robust_list(0x55555695e660, 24) = 0 [pid 5125] <... munmap resumed>) = 0 [pid 5126] chdir("./5" [pid 5125] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5126 [pid 5126] <... chdir resumed>) = 0 [pid 5125] <... openat resumed>) = 4 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5125] ioctl(4, LOOP_SET_FD, 3 [pid 5126] <... prctl resumed>) = 0 [pid 5124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5126] setpgid(0, 0 [pid 5125] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5126] <... setpgid resumed>) = 0 [pid 5058] close(3 [pid 5125] close(3 [pid 5058] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5127 attached ) = 3 [pid 5125] <... close resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5126] write(3, "1000", 4 [pid 5125] close(4 [pid 5126] <... write resumed>) = 4 [pid 5125] <... close resumed>) = 0 [pid 5126] close(3 [pid 5125] mkdir("./file1", 0777 [pid 5127] set_robust_list(0x55555695e660, 24) = 0 [pid 5127] chdir("./5" [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5127 [pid 5125] <... mkdir resumed>) = 0 [pid 5126] <... close resumed>) = 0 [pid 5126] symlink("/dev/binderfs", "./binderfs" [pid 5127] <... chdir resumed>) = 0 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5126] <... symlink resumed>) = 0 [pid 5127] setpgid(0, 0 [pid 5054] close(3 [pid 5127] <... setpgid resumed>) = 0 [pid 5126] memfd_create("syzkaller", 0 [pid 5125] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] close(3 [pid 5054] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [ 55.732984][ T5125] loop2: detected capacity change from 0 to 4096 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5127] write(3, "1000", 4 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5128 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5129 [pid 5127] <... write resumed>) = 4 [pid 5127] close(3./strace-static-x86_64: Process 5129 attached ) = 0 [pid 5129] set_robust_list(0x55555695e660, 24 [pid 5127] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5127] memfd_create("syzkaller", 0 [pid 5126] <... memfd_create resumed>) = 3 [pid 5129] <... set_robust_list resumed>) = 0 [pid 5127] <... memfd_create resumed>) = 3 [pid 5129] chdir("./5" [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5129] <... chdir resumed>) = 0 [pid 5127] <... mmap resumed>) = 0x7f4da0c00000 ./strace-static-x86_64: Process 5128 attached [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5128] set_robust_list(0x55555695e660, 24 [pid 5126] <... mmap resumed>) = 0x7f4da0c00000 [pid 5129] <... prctl resumed>) = 0 [pid 5129] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5129] close(3) = 0 [pid 5129] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5128] chdir("./5" [pid 5124] <... write resumed>) = 2097152 [pid 5129] memfd_create("syzkaller", 0) = 3 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5128] <... chdir resumed>) = 0 [pid 5124] munmap(0x7f4da0c00000, 138412032 [pid 5127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5124] <... munmap resumed>) = 0 [pid 5128] <... prctl resumed>) = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5128] setpgid(0, 0) = 0 [pid 5124] <... openat resumed>) = 4 [ 55.785622][ T5125] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.812066][ T5125] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] ioctl(4, LOOP_SET_FD, 3 [pid 5128] <... openat resumed>) = 3 [pid 5128] write(3, "1000", 4) = 4 [pid 5128] close(3 [pid 5124] <... ioctl resumed>) = 0 [pid 5128] <... close resumed>) = 0 [pid 5128] symlink("/dev/binderfs", "./binderfs" [pid 5124] close(3 [pid 5128] <... symlink resumed>) = 0 [pid 5124] <... close resumed>) = 0 [pid 5124] close(4 [pid 5128] memfd_create("syzkaller", 0 [pid 5124] <... close resumed>) = 0 [pid 5124] mkdir("./file1", 0777 [pid 5128] <... memfd_create resumed>) = 3 [pid 5124] <... mkdir resumed>) = 0 [pid 5127] <... write resumed>) = 2097152 [pid 5129] <... write resumed>) = 2097152 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5126] <... write resumed>) = 2097152 [pid 5125] <... mount resumed>) = 0 [pid 5124] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5127] munmap(0x7f4da0c00000, 138412032 [pid 5125] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5129] munmap(0x7f4da0c00000, 138412032 [pid 5128] <... mmap resumed>) = 0x7f4da0c00000 [pid 5127] <... munmap resumed>) = 0 [pid 5126] munmap(0x7f4da0c00000, 138412032 [pid 5125] <... openat resumed>) = 3 [pid 5125] chdir("./file1") = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5127] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 55.836833][ T5124] loop1: detected capacity change from 0 to 4096 [ 55.855386][ T5130] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.878590][ T5127] loop4: detected capacity change from 0 to 4096 [pid 5127] ioctl(4, LOOP_SET_FD, 3 [pid 5129] <... munmap resumed>) = 0 [pid 5128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5126] <... munmap resumed>) = 0 [pid 5125] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5125] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5127] <... ioctl resumed>) = 0 [pid 5127] close(3 [pid 5129] <... openat resumed>) = 4 [pid 5127] <... close resumed>) = 0 [pid 5127] close(4) = 0 [pid 5127] mkdir("./file1", 0777 [pid 5129] ioctl(4, LOOP_SET_FD, 3 [pid 5127] <... mkdir resumed>) = 0 [pid 5127] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5129] <... ioctl resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5129] close(3 [ 55.885279][ T5124] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.896760][ T5129] loop0: detected capacity change from 0 to 4096 [ 55.898951][ T5127] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.920763][ T5126] loop5: detected capacity change from 0 to 4096 [ 55.927650][ T5124] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5126] ioctl(4, LOOP_SET_FD, 3 [pid 5129] <... close resumed>) = 0 [pid 5126] <... ioctl resumed>) = 0 [pid 5125] <... open resumed>) = 4 [pid 5128] <... write resumed>) = 2097152 [pid 5128] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5128] ioctl(4, LOOP_SET_FD, 3 [pid 5129] close(4 [pid 5126] close(3 [pid 5125] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5129] <... close resumed>) = 0 [pid 5126] <... close resumed>) = 0 [pid 5125] <... open resumed>) = 5 [pid 5128] <... ioctl resumed>) = 0 [pid 5129] mkdir("./file1", 0777 [pid 5126] close(4 [pid 5128] close(3) = 0 [pid 5128] close(4) = 0 [pid 5126] <... close resumed>) = 0 [pid 5128] mkdir("./file1", 0777 [pid 5129] <... mkdir resumed>) = 0 [pid 5128] <... mkdir resumed>) = 0 [pid 5126] mkdir("./file1", 0777 [pid 5128] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5126] <... mkdir resumed>) = 0 [ 55.943277][ T5131] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 55.943367][ T5127] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 55.962397][ T5128] loop3: detected capacity change from 0 to 4096 [ 55.978998][ T5126] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5126] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5125] ftruncate(5, 33587195 [pid 5129] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5124] <... mount resumed>) = 0 [pid 5124] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5124] chdir("./file1") = 0 [pid 5124] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5124] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5124] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5124] ftruncate(5, 33587195) = 0 [pid 5124] sendfile(4, 5, NULL, 281474978811909 [pid 5125] <... ftruncate resumed>) = 0 [ 55.979045][ T5128] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 55.988802][ T5129] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 56.011357][ T5126] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [ 56.020967][ T5128] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5125] sendfile(4, 5, NULL, 281474978811909 [pid 5127] <... mount resumed>) = 0 [pid 5127] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5127] chdir("./file1") = 0 [pid 5126] <... mount resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5126] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5127] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] chdir("./file1") = 0 [pid 5127] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5126] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5126] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5128] <... mount resumed>) = 0 [pid 5128] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5128] chdir("./file1") = 0 [pid 5128] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [ 56.036223][ T5129] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 56.040861][ T5132] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.059253][ T5133] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5128] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5126] <... open resumed>) = 4 [pid 5128] <... open resumed>) = 4 [pid 5127] <... open resumed>) = 4 [pid 5125] <... sendfile resumed>) = 368640 [pid 5128] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5128] ftruncate(5, 33587195 [pid 5125] unlink("./bus" [pid 5127] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5127] ftruncate(5, 33587195 [pid 5126] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5128] <... ftruncate resumed>) = 0 [pid 5126] <... open resumed>) = 5 [pid 5128] sendfile(4, 5, NULL, 281474978811909 [pid 5126] ftruncate(5, 33587195 [pid 5127] <... ftruncate resumed>) = 0 [pid 5125] <... unlink resumed>) = 0 [pid 5127] sendfile(4, 5, NULL, 281474978811909 [pid 5125] exit_group(0) = ? [pid 5126] <... ftruncate resumed>) = 0 [ 56.088122][ T5134] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5126] sendfile(4, 5, NULL, 281474978811909 [pid 5129] <... mount resumed>) = 0 [pid 5129] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5129] chdir("./file1") = 0 [pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5129] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5125] +++ exited with 0 +++ [pid 5129] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5056] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5129] <... open resumed>) = 5 [pid 5056] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5129] ftruncate(5, 33587195 [pid 5056] <... openat resumed>) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, [pid 5129] <... ftruncate resumed>) = 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5129] sendfile(4, 5, NULL, 281474978811909 [pid 5056] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./5/binderfs") = 0 [ 56.140553][ T5135] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5056] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5056] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./5/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./5/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./5") = 0 [pid 5056] mkdir("./6", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5124] <... sendfile resumed>) = 368640 [pid 5124] unlink("./bus") = 0 [pid 5124] exit_group(0) = ? [pid 5126] <... sendfile resumed>) = 368640 [pid 5056] <... ioctl resumed>) = 0 [pid 5126] unlink("./bus") = 0 [pid 5126] exit_group(0) = ? [pid 5124] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5055] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5055] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", [pid 5129] <... sendfile resumed>) = 368640 [pid 5128] <... sendfile resumed>) = 368640 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5129] unlink("./bus" [pid 5128] unlink("./bus" [pid 5056] close(3 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5129] <... unlink resumed>) = 0 [pid 5128] <... unlink resumed>) = 0 [pid 5127] <... sendfile resumed>) = 368640 [pid 5056] <... close resumed>) = 0 [pid 5127] unlink("./bus" [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./5/binderfs") = 0 [pid 5055] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5129] exit_group(0 [pid 5128] exit_group(0 [pid 5129] <... exit_group resumed>) = ? [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5136 [pid 5128] <... exit_group resumed>) = ? [pid 5126] +++ exited with 0 +++ ./strace-static-x86_64: Process 5136 attached [pid 5136] set_robust_list(0x55555695e660, 24) = 0 [pid 5136] chdir("./6") = 0 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5136] setpgid(0, 0) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5136] write(3, "1000", 4) = 4 [pid 5136] close(3) = 0 [pid 5136] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5136] memfd_create("syzkaller", 0) = 3 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5127] <... unlink resumed>) = 0 [pid 5127] exit_group(0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5127] <... exit_group resumed>) = ? [pid 5059] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5059] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5059] newfstatat(3, "", [pid 5129] +++ exited with 0 +++ [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5054] restart_syscall(<... resuming interrupted clone ...> [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5054] <... restart_syscall resumed>) = 0 [pid 5136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5128] +++ exited with 0 +++ [pid 5127] +++ exited with 0 +++ [pid 5059] getdents64(3, [pid 5055] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./5/file1", [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5055] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... restart_syscall resumed>) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... openat resumed>) = 3 [pid 5055] <... openat resumed>) = 4 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5058] newfstatat(3, "", [pid 5055] newfstatat(4, "", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, [pid 5055] getdents64(4, [pid 5054] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] unlink("./5/binderfs" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] getdents64(4, [pid 5054] <... openat resumed>) = 3 [pid 5058] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] close(4 [pid 5054] newfstatat(3, "", [pid 5059] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] unlink("./5/binderfs" [pid 5057] <... openat resumed>) = 3 [pid 5055] <... close resumed>) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] rmdir("./5/file1" [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(3, [pid 5055] <... rmdir resumed>) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 [pid 5055] rmdir("./5") = 0 [pid 5055] mkdir("./6", 0777) = 0 [pid 5136] <... write resumed>) = 2097152 [pid 5059] <... umount2 resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] getdents64(3, [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... openat resumed>) = 3 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5136] munmap(0x7f4da0c00000, 138412032 [pid 5059] newfstatat(AT_FDCWD, "./5/file1", [pid 5058] newfstatat(AT_FDCWD, "./5/file1", [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5057] newfstatat(AT_FDCWD, "./5/binderfs", [pid 5059] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 4 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./5/binderfs" [pid 5054] unlink("./5/binderfs" [pid 5059] newfstatat(4, "", [pid 5058] newfstatat(4, "", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... unlink resumed>) = 0 [pid 5059] getdents64(4, [pid 5058] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... unlink resumed>) = 0 [pid 5054] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5058] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5058] close(4 [pid 5059] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5059] rmdir("./5/file1" [pid 5058] rmdir("./5/file1" [pid 5057] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5059] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5136] <... munmap resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] <... umount2 resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5057] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5136] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5054] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5059] rmdir("./5" [pid 5057] newfstatat(AT_FDCWD, "./5/file1", [pid 5059] <... rmdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] rmdir("./5" [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5136] <... openat resumed>) = 4 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] newfstatat(AT_FDCWD, "./5/file1", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] mkdir("./6", 0777 [pid 5057] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5136] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] mkdir("./6", 0777 [pid 5057] newfstatat(4, "", [pid 5054] umount2("./5/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5057] getdents64(4, [pid 5059] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5058] <... openat resumed>) = 3 [pid 5057] getdents64(4, [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./5/file1") = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(3) = 0 [pid 5057] rmdir("./5") = 0 [pid 5057] mkdir("./6", 0777) = 0 [pid 5054] openat(AT_FDCWD, "./5/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5136] <... ioctl resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5136] close(3 [pid 5057] <... openat resumed>) = 3 [pid 5054] <... openat resumed>) = 4 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5136] <... close resumed>) = 0 [pid 5054] newfstatat(4, "", [pid 5136] close(4 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5136] <... close resumed>) = 0 [pid 5054] getdents64(4, [pid 5136] mkdir("./file1", 0777 [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5054] getdents64(4, [pid 5136] <... mkdir resumed>) = 0 [pid 5136] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] close(4) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5054] rmdir("./5/file1") = 0 [pid 5054] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [pid 5054] rmdir("./5") = 0 [pid 5054] mkdir("./6", 0777) = 0 [pid 5058] close(3) = 0 [pid 5059] close(3 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... close resumed>) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] <... openat resumed>) = 3 [pid 5054] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5138 attached [pid 5138] set_robust_list(0x55555695e660, 24) = 0 [pid 5138] chdir("./6" [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5137 [pid 5138] <... chdir resumed>) = 0 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5138] setpgid(0, 0) = 0 [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5138 [pid 5138] write(3, "1000", 4./strace-static-x86_64: Process 5137 attached ) = 4 [pid 5055] <... ioctl resumed>) = 0 [pid 5138] close(3 [pid 5137] set_robust_list(0x55555695e660, 24 [pid 5138] <... close resumed>) = 0 [pid 5138] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5138] memfd_create("syzkaller", 0) = 3 [pid 5137] <... set_robust_list resumed>) = 0 [pid 5137] chdir("./6" [pid 5055] close(3 [pid 5137] <... chdir resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5137] <... prctl resumed>) = 0 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [ 56.455109][ T5136] loop2: detected capacity change from 0 to 4096 [ 56.490328][ T5136] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) ./strace-static-x86_64: Process 5140 attached [pid 5138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5137] setpgid(0, 0) = 0 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5140 [pid 5140] set_robust_list(0x55555695e660, 24 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5140] <... set_robust_list resumed>) = 0 [pid 5140] chdir("./6") = 0 [pid 5137] <... openat resumed>) = 3 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5137] write(3, "1000", 4 [pid 5140] <... prctl resumed>) = 0 [pid 5137] <... write resumed>) = 4 [pid 5140] setpgid(0, 0 [pid 5137] close(3) = 0 [pid 5140] <... setpgid resumed>) = 0 [pid 5137] symlink("/dev/binderfs", "./binderfs" [pid 5057] <... ioctl resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5137] <... symlink resumed>) = 0 [pid 5137] memfd_create("syzkaller", 0 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5141 [pid 5140] <... openat resumed>) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5137] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 5141 attached [pid 5140] close(3 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5140] <... close resumed>) = 0 [pid 5140] symlink("/dev/binderfs", "./binderfs" [pid 5137] <... mmap resumed>) = 0x7f4da0c00000 [pid 5140] <... symlink resumed>) = 0 [pid 5140] memfd_create("syzkaller", 0 [pid 5141] set_robust_list(0x55555695e660, 24) = 0 [pid 5141] chdir("./6" [pid 5140] <... memfd_create resumed>) = 3 [pid 5137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5141] <... chdir resumed>) = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5141] <... prctl resumed>) = 0 [pid 5141] setpgid(0, 0 [pid 5140] <... mmap resumed>) = 0x7f4da0c00000 [pid 5141] <... setpgid resumed>) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5141] memfd_create("syzkaller", 0) = 3 [ 56.526710][ T5136] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5138] <... write resumed>) = 2097152 [pid 5141] <... mmap resumed>) = 0x7f4da0c00000 [pid 5140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5137] <... write resumed>) = 2097152 [pid 5136] <... mount resumed>) = 0 [pid 5136] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5136] chdir("./file1") = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5136] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5138] munmap(0x7f4da0c00000, 138412032 [pid 5141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5138] <... munmap resumed>) = 0 [pid 5137] munmap(0x7f4da0c00000, 138412032 [pid 5054] <... ioctl resumed>) = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5138] ioctl(4, LOOP_SET_FD, 3 [pid 5137] <... munmap resumed>) = 0 [pid 5054] close(3 [pid 5137] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5141] <... write resumed>) = 2097152 [pid 5140] <... write resumed>) = 2097152 [pid 5138] <... ioctl resumed>) = 0 [pid 5136] <... open resumed>) = 4 [pid 5054] <... close resumed>) = 0 [pid 5137] <... openat resumed>) = 4 [pid 5136] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5141] munmap(0x7f4da0c00000, 138412032 [pid 5140] munmap(0x7f4da0c00000, 138412032 [pid 5138] close(3 [pid 5137] ioctl(4, LOOP_SET_FD, 3 [pid 5136] <... open resumed>) = 5 [ 56.599736][ T5142] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.626249][ T5138] loop5: detected capacity change from 0 to 4096 ./strace-static-x86_64: Process 5143 attached [pid 5141] <... munmap resumed>) = 0 [pid 5140] <... munmap resumed>) = 0 [pid 5138] <... close resumed>) = 0 [pid 5136] ftruncate(5, 33587195) = 0 [pid 5136] sendfile(4, 5, NULL, 281474978811909 [pid 5138] close(4) = 0 [pid 5143] set_robust_list(0x55555695e660, 24 [pid 5138] mkdir("./file1", 0777 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5143 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5138] <... mkdir resumed>) = 0 [pid 5138] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5141] <... openat resumed>) = 4 [pid 5140] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5143] chdir("./6") = 0 [pid 5141] ioctl(4, LOOP_SET_FD, 3 [pid 5140] <... openat resumed>) = 4 [pid 5137] <... ioctl resumed>) = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5140] ioctl(4, LOOP_SET_FD, 3 [pid 5143] <... prctl resumed>) = 0 [pid 5141] <... ioctl resumed>) = 0 [pid 5137] close(3 [pid 5143] setpgid(0, 0 [pid 5137] <... close resumed>) = 0 [pid 5143] <... setpgid resumed>) = 0 [pid 5141] close(3 [pid 5137] close(4) = 0 [pid 5141] <... close resumed>) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5141] close(4 [pid 5137] mkdir("./file1", 0777 [pid 5141] <... close resumed>) = 0 [pid 5137] <... mkdir resumed>) = 0 [pid 5137] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5141] mkdir("./file1", 0777 [pid 5143] <... openat resumed>) = 3 [pid 5143] write(3, "1000", 4 [pid 5141] <... mkdir resumed>) = 0 [pid 5143] <... write resumed>) = 4 [ 56.647837][ T5137] loop4: detected capacity change from 0 to 4096 [ 56.661761][ T5138] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 56.665309][ T5141] loop3: detected capacity change from 0 to 4096 [ 56.672123][ T5140] loop1: detected capacity change from 0 to 4096 [ 56.685620][ T5138] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5140] <... ioctl resumed>) = 0 [pid 5143] close(3 [pid 5141] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5143] <... close resumed>) = 0 [pid 5140] close(3 [pid 5143] symlink("/dev/binderfs", "./binderfs" [pid 5140] <... close resumed>) = 0 [pid 5140] close(4) = 0 [pid 5143] <... symlink resumed>) = 0 [pid 5140] mkdir("./file1", 0777) = 0 [pid 5140] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5143] memfd_create("syzkaller", 0) = 3 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [ 56.706073][ T5137] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 56.720965][ T5141] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 56.732992][ T5140] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5138] <... mount resumed>) = 0 [pid 5138] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5138] chdir("./file1") = 0 [pid 5138] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [ 56.754016][ T5144] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.767734][ T5140] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 56.774963][ T5137] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 56.788249][ T5141] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5138] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5143] <... write resumed>) = 2097152 [pid 5138] <... open resumed>) = 4 [pid 5138] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5138] ftruncate(5, 33587195) = 0 [pid 5138] sendfile(4, 5, NULL, 281474978811909 [ 56.810266][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop3 [ 56.822561][ T5145] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.828351][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop4 [ 56.840164][ T5146] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5143] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5141] <... mount resumed>) = 0 [pid 5137] <... mount resumed>) = 0 [pid 5141] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5137] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5141] chdir("./file1" [pid 5137] <... openat resumed>) = 3 [pid 5141] <... chdir resumed>) = 0 [pid 5141] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5141] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5140] <... mount resumed>) = 0 [pid 5140] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5140] chdir("./file1" [pid 5137] chdir("./file1" [pid 5143] <... openat resumed>) = 4 [pid 5140] <... chdir resumed>) = 0 [pid 5137] <... chdir resumed>) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5137] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5140] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5143] ioctl(4, LOOP_SET_FD, 3 [pid 5140] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5141] <... open resumed>) = 4 [pid 5141] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5141] ftruncate(5, 33587195) = 0 [pid 5141] sendfile(4, 5, NULL, 281474978811909 [pid 5137] <... open resumed>) = 4 [pid 5137] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5137] ftruncate(5, 33587195) = 0 [pid 5137] sendfile(4, 5, NULL, 281474978811909 [pid 5140] <... open resumed>) = 4 [pid 5140] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5143] <... ioctl resumed>) = 0 [pid 5140] ftruncate(5, 33587195 [pid 5143] close(3 [pid 5140] <... ftruncate resumed>) = 0 [pid 5143] <... close resumed>) = 0 [pid 5140] sendfile(4, 5, NULL, 281474978811909 [pid 5143] close(4) = 0 [pid 5143] mkdir("./file1", 0777) = 0 [ 56.851416][ T5147] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.871607][ T5143] loop0: detected capacity change from 0 to 4096 [pid 5143] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "") = 0 [pid 5143] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5143] chdir("./file1") = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5143] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5136] <... sendfile resumed>) = 368640 [ 56.906594][ T5143] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 56.918036][ T5143] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 56.934142][ T5148] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 56.940567][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop0 [pid 5136] unlink("./bus" [pid 5143] <... open resumed>) = 4 [pid 5143] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5143] ftruncate(5, 33587195 [pid 5136] <... unlink resumed>) = 0 [pid 5143] <... ftruncate resumed>) = 0 [pid 5136] exit_group(0 [pid 5143] sendfile(4, 5, NULL, 281474978811909 [pid 5136] <... exit_group resumed>) = ? [pid 5136] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5056] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5140] <... sendfile resumed>) = 368640 [pid 5056] newfstatat(3, "", [pid 5140] unlink("./bus" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5140] <... unlink resumed>) = 0 [pid 5056] getdents64(3, [pid 5140] exit_group(0) = ? [pid 5138] <... sendfile resumed>) = 368640 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5138] unlink("./bus" [pid 5056] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5138] <... unlink resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./6/binderfs") = 0 [pid 5138] exit_group(0 [pid 5056] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5138] <... exit_group resumed>) = ? [pid 5140] +++ exited with 0 +++ [pid 5056] <... umount2 resumed>) = 0 [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5055] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] <... openat resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./6/file1", [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 4 [pid 5055] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5141] <... sendfile resumed>) = 368640 [pid 5141] unlink("./bus" [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./6/binderfs" [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5055] <... unlink resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5141] <... unlink resumed>) = 0 [pid 5141] exit_group(0 [pid 5138] +++ exited with 0 +++ [pid 5056] getdents64(4, [pid 5055] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5141] <... exit_group resumed>) = ? [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] close(4 [pid 5059] newfstatat(3, "", [pid 5056] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] rmdir("./6/file1" [pid 5059] getdents64(3, [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] getdents64(3, [pid 5059] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5059] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5056] <... close resumed>) = 0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] rmdir("./6" [pid 5059] unlink("./6/binderfs" [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... unlink resumed>) = 0 [pid 5056] mkdir("./7", 0777 [pid 5059] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5055] <... umount2 resumed>) = 0 [pid 5055] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5137] <... sendfile resumed>) = 368640 [pid 5055] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5137] unlink("./bus" [pid 5055] <... openat resumed>) = 4 [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5137] <... unlink resumed>) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5137] exit_group(0 [pid 5055] close(4 [pid 5137] <... exit_group resumed>) = ? [pid 5059] <... umount2 resumed>) = 0 [pid 5059] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] rmdir("./6/file1" [pid 5059] newfstatat(AT_FDCWD, "./6/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5059] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5143] <... sendfile resumed>) = 368640 [pid 5141] +++ exited with 0 +++ [pid 5137] +++ exited with 0 +++ [pid 5055] getdents64(3, [pid 5143] unlink("./bus" [pid 5059] getdents64(4, [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5143] <... unlink resumed>) = 0 [pid 5058] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] getdents64(4, [pid 5057] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] close(3 [pid 5143] exit_group(0 [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5143] <... exit_group resumed>) = ? [pid 5058] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5059] close(4 [pid 5055] <... close resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5055] rmdir("./6" [pid 5059] rmdir("./6/file1" [pid 5058] newfstatat(3, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] unlink("./6/binderfs" [pid 5055] mkdir("./7", 0777 [pid 5059] getdents64(3, [pid 5058] getdents64(3, [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] <... unlink resumed>) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5059] close(3 [pid 5058] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... close resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] rmdir("./6") = 0 [pid 5058] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] unlink("./6/binderfs" [pid 5055] <... openat resumed>) = 3 [pid 5059] mkdir("./7", 0777 [pid 5058] <... unlink resumed>) = 0 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5059] <... mkdir resumed>) = 0 [pid 5058] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./6/file1", [pid 5057] newfstatat(AT_FDCWD, "./6/file1", [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5143] +++ exited with 0 +++ [pid 5059] <... openat resumed>) = 3 [pid 5058] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... ioctl resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 4 [pid 5056] <... close resumed>) = 0 [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- [pid 5054] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] <... openat resumed>) = 4 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5149 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(4, "", [pid 5054] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(4, "", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... openat resumed>) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5058] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5057] close(4 [pid 5058] <... close resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5058] rmdir("./6/file1" [pid 5057] rmdir("./6/file1" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5058] getdents64(3, [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] rmdir("./6" [pid 5054] newfstatat(3, "", ./strace-static-x86_64: Process 5149 attached [pid 5058] rmdir("./6" [pid 5057] <... rmdir resumed>) = 0 [pid 5055] close(3 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5149] set_robust_list(0x55555695e660, 24) = 0 [pid 5055] <... close resumed>) = 0 [pid 5054] getdents64(3, [pid 5149] chdir("./7" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] mkdir("./7", 0777 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] <... mkdir resumed>) = 0 [pid 5058] mkdir("./7", 0777 [pid 5054] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 ./strace-static-x86_64: Process 5150 attached [pid 5149] <... chdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5150 [pid 5054] newfstatat(AT_FDCWD, "./6/binderfs", [pid 5150] set_robust_list(0x55555695e660, 24 [pid 5149] <... prctl resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5054] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5149] setpgid(0, 0 [pid 5054] unlink("./6/binderfs" [pid 5150] <... set_robust_list resumed>) = 0 [pid 5149] <... setpgid resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5054] <... unlink resumed>) = 0 [pid 5150] chdir("./7" [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5054] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5150] <... chdir resumed>) = 0 [pid 5149] <... openat resumed>) = 3 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3 [pid 5150] <... prctl resumed>) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5150] write(3, "1000", 4) = 4 [pid 5150] close(3) = 0 [pid 5150] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5149] <... close resumed>) = 0 [pid 5150] memfd_create("syzkaller", 0 [pid 5149] symlink("/dev/binderfs", "./binderfs" [pid 5150] <... memfd_create resumed>) = 3 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5149] <... symlink resumed>) = 0 [pid 5150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5149] memfd_create("syzkaller", 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5149] <... memfd_create resumed>) = 3 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5059] close(3 [pid 5054] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5150] <... write resumed>) = 2097152 [pid 5059] <... close resumed>) = 0 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5150] munmap(0x7f4da0c00000, 138412032 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... ioctl resumed>) = 0 [pid 5054] newfstatat(AT_FDCWD, "./6/file1", [pid 5150] <... munmap resumed>) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] umount2("./6/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] close(3 [pid 5150] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5150] <... openat resumed>) = 4 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 5151 attached ) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5151 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5152 attached [pid 5054] openat(AT_FDCWD, "./6/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5152] set_robust_list(0x55555695e660, 24) = 0 [pid 5151] set_robust_list(0x55555695e660, 24 [pid 5054] <... openat resumed>) = 4 [pid 5152] chdir("./7" [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5152 [pid 5054] newfstatat(4, "", [pid 5152] <... chdir resumed>) = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5151] <... set_robust_list resumed>) = 0 [pid 5054] getdents64(4, [pid 5152] <... setpgid resumed>) = 0 [pid 5151] chdir("./7" [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5054] getdents64(4, [pid 5152] <... openat resumed>) = 3 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5151] <... chdir resumed>) = 0 [pid 5152] write(3, "1000", 4 [pid 5054] close(4 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5152] <... write resumed>) = 4 [pid 5152] close(3) = 0 [pid 5152] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] <... prctl resumed>) = 0 [pid 5054] <... close resumed>) = 0 [pid 5054] rmdir("./6/file1" [pid 5152] memfd_create("syzkaller", 0 [pid 5151] setpgid(0, 0 [pid 5152] <... memfd_create resumed>) = 3 [pid 5151] <... setpgid resumed>) = 0 [pid 5054] <... rmdir resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5054] getdents64(3, [pid 5151] <... openat resumed>) = 3 [pid 5151] write(3, "1000", 4) = 4 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5151] close(3 [pid 5054] close(3 [pid 5151] <... close resumed>) = 0 [pid 5152] <... mmap resumed>) = 0x7f4da0c00000 [pid 5151] symlink("/dev/binderfs", "./binderfs" [pid 5054] <... close resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5151] <... symlink resumed>) = 0 [pid 5058] close(3 [pid 5054] rmdir("./6" [pid 5150] close(3) = 0 [pid 5150] close(4 [pid 5054] <... rmdir resumed>) = 0 [pid 5150] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5054] mkdir("./7", 0777 [pid 5150] mkdir("./file1", 0777) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] <... mkdir resumed>) = 0 [pid 5150] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ./strace-static-x86_64: Process 5153 attached [pid 5151] memfd_create("syzkaller", 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5153 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5153] set_robust_list(0x55555695e660, 24 [pid 5151] <... memfd_create resumed>) = 3 [pid 5149] <... write resumed>) = 2097152 [pid 5153] <... set_robust_list resumed>) = 0 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5153] chdir("./7") = 0 [pid 5152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5149] munmap(0x7f4da0c00000, 138412032) = 0 [ 57.320316][ T5150] loop1: detected capacity change from 0 to 4096 [ 57.356217][ T5150] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5152] <... write resumed>) = 2097152 [pid 5151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5149] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5149] ioctl(4, LOOP_SET_FD, 3 [pid 5153] <... prctl resumed>) = 0 [pid 5152] munmap(0x7f4da0c00000, 138412032 [pid 5153] setpgid(0, 0) = 0 [pid 5152] <... munmap resumed>) = 0 [pid 5151] <... write resumed>) = 2097152 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5152] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5150] <... mount resumed>) = 0 [pid 5149] <... ioctl resumed>) = 0 [pid 5153] write(3, "1000", 4 [pid 5152] <... openat resumed>) = 4 [pid 5150] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5149] close(3 [pid 5153] <... write resumed>) = 4 [pid 5152] ioctl(4, LOOP_SET_FD, 3 [pid 5150] <... openat resumed>) = 3 [pid 5153] close(3 [pid 5150] chdir("./file1" [pid 5149] <... close resumed>) = 0 [pid 5150] <... chdir resumed>) = 0 [pid 5149] close(4 [pid 5150] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5149] <... close resumed>) = 0 [pid 5150] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] mkdir("./file1", 0777 [pid 5150] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5149] <... mkdir resumed>) = 0 [ 57.380677][ T5150] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 57.390031][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop1 [ 57.391761][ T5149] loop2: detected capacity change from 0 to 4096 [ 57.411005][ T5154] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 57.424875][ T5152] loop3: detected capacity change from 0 to 4096 [pid 5149] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5153] <... close resumed>) = 0 [pid 5153] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] munmap(0x7f4da0c00000, 138412032 [pid 5153] memfd_create("syzkaller", 0 [pid 5151] <... munmap resumed>) = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5153] <... memfd_create resumed>) = 3 [pid 5152] <... ioctl resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5054] close(3 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5150] <... open resumed>) = 4 [pid 5054] <... close resumed>) = 0 [pid 5150] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5150] ftruncate(5, 33587195 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] <... ftruncate resumed>) = 0 [pid 5150] sendfile(4, 5, NULL, 281474978811909./strace-static-x86_64: Process 5155 attached [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5155 [pid 5152] close(3 [pid 5151] <... openat resumed>) = 4 [pid 5155] set_robust_list(0x55555695e660, 24) = 0 [pid 5155] chdir("./7" [pid 5152] <... close resumed>) = 0 [pid 5151] ioctl(4, LOOP_SET_FD, 3 [pid 5152] close(4) = 0 [pid 5155] <... chdir resumed>) = 0 [pid 5153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5152] mkdir("./file1", 0777 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5152] <... mkdir resumed>) = 0 [pid 5155] <... prctl resumed>) = 0 [pid 5155] setpgid(0, 0) = 0 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5152] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5155] <... openat resumed>) = 3 [ 57.429738][ T5149] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 57.470822][ T5151] loop5: detected capacity change from 0 to 4096 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5151] <... ioctl resumed>) = 0 [pid 5151] close(3 [pid 5155] memfd_create("syzkaller", 0 [pid 5151] <... close resumed>) = 0 [pid 5151] close(4 [pid 5153] <... write resumed>) = 2097152 [pid 5151] <... close resumed>) = 0 [pid 5155] <... memfd_create resumed>) = 3 [pid 5151] mkdir("./file1", 0777) = 0 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5151] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5155] <... mmap resumed>) = 0x7f4da0c00000 [ 57.485963][ T5152] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 57.486127][ T5149] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 57.511591][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop2 [ 57.522574][ T5151] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5153] munmap(0x7f4da0c00000, 138412032 [pid 5155] <... write resumed>) = 2097152 [pid 5153] <... munmap resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5153] ioctl(4, LOOP_SET_FD, 3 [pid 5155] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5153] <... ioctl resumed>) = 0 [pid 5153] close(3 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5153] <... close resumed>) = 0 [pid 5153] close(4 [pid 5155] <... openat resumed>) = 4 [ 57.544739][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop3 [ 57.559783][ T5151] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [ 57.562786][ T5153] loop4: detected capacity change from 0 to 4096 [ 57.574010][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop5 [ 57.576021][ T5152] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5155] ioctl(4, LOOP_SET_FD, 3 [pid 5153] <... close resumed>) = 0 [pid 5153] mkdir("./file1", 0777) = 0 [pid 5153] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5151] <... mount resumed>) = 0 [pid 5149] <... mount resumed>) = 0 [pid 5151] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5149] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5151] <... openat resumed>) = 3 [pid 5149] <... openat resumed>) = 3 [pid 5151] chdir("./file1" [pid 5149] chdir("./file1" [pid 5151] <... chdir resumed>) = 0 [pid 5149] <... chdir resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5149] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5151] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5149] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5149] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5149] ftruncate(5, 33587195 [pid 5155] <... ioctl resumed>) = 0 [pid 5155] close(3 [pid 5152] <... mount resumed>) = 0 [pid 5152] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5152] chdir("./file1") = 0 [pid 5152] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5155] <... close resumed>) = 0 [pid 5152] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] <... open resumed>) = 4 [pid 5155] close(4) = 0 [pid 5155] mkdir("./file1", 0777 [pid 5152] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5151] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5151] ftruncate(5, 33587195 [pid 5155] <... mkdir resumed>) = 0 [pid 5155] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5151] <... ftruncate resumed>) = 0 [pid 5149] <... ftruncate resumed>) = 0 [ 57.595958][ T5156] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 57.607325][ T5155] loop0: detected capacity change from 0 to 4096 [ 57.614675][ T5157] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 57.625603][ T5153] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 57.632707][ T5158] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5151] sendfile(4, 5, NULL, 281474978811909 [pid 5149] sendfile(4, 5, NULL, 281474978811909 [pid 5152] <... open resumed>) = 4 [pid 5152] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5152] ftruncate(5, 33587195) = 0 [ 57.654423][ T5155] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 57.676694][ T5155] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 57.691086][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop4 [pid 5152] sendfile(4, 5, NULL, 281474978811909 [pid 5155] <... mount resumed>) = 0 [pid 5155] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5155] chdir("./file1") = 0 [pid 5155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5155] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5155] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5153] <... mount resumed>) = 0 [pid 5153] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5155] ftruncate(5, 33587195 [pid 5153] <... openat resumed>) = 3 [pid 5153] chdir("./file1") = 0 [pid 5155] <... ftruncate resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5153] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5155] sendfile(4, 5, NULL, 281474978811909 [pid 5153] <... open resumed>) = 4 [pid 5153] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5153] ftruncate(5, 33587195) = 0 [ 57.715982][ T5159] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 57.725751][ T5153] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 57.754952][ T5160] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5153] sendfile(4, 5, NULL, 281474978811909 [pid 5150] <... sendfile resumed>) = 368640 [pid 5150] unlink("./bus") = 0 [pid 5150] exit_group(0) = ? [pid 5150] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5055] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./7/binderfs") = 0 [pid 5055] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5149] <... sendfile resumed>) = 368640 [pid 5055] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5149] unlink("./bus") = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5149] exit_group(0 [pid 5055] newfstatat(AT_FDCWD, "./7/file1", [pid 5149] <... exit_group resumed>) = ? [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5151] <... sendfile resumed>) = 368640 [pid 5055] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5151] unlink("./bus" [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5151] <... unlink resumed>) = 0 [pid 5055] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5151] exit_group(0 [pid 5055] <... openat resumed>) = 4 [pid 5151] <... exit_group resumed>) = ? [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4 [pid 5152] <... sendfile resumed>) = 368640 [pid 5055] <... close resumed>) = 0 [pid 5055] rmdir("./7/file1" [pid 5152] unlink("./bus" [pid 5055] <... rmdir resumed>) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 [pid 5055] rmdir("./7") = 0 [pid 5152] <... unlink resumed>) = 0 [pid 5152] exit_group(0 [pid 5149] +++ exited with 0 +++ [pid 5055] mkdir("./8", 0777 [pid 5152] <... exit_group resumed>) = ? [pid 5151] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5055] <... mkdir resumed>) = 0 [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5056] <... openat resumed>) = 3 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(3, "", [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5059] getdents64(3, [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(3, [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5153] <... sendfile resumed>) = 368640 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5153] unlink("./bus" [pid 5059] unlink("./7/binderfs" [pid 5056] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... unlink resumed>) = 0 [pid 5059] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5153] <... unlink resumed>) = 0 [pid 5153] exit_group(0) = ? [pid 5056] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./7/binderfs") = 0 [pid 5056] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5152] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5057] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5057] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5155] <... sendfile resumed>) = 368640 [pid 5153] +++ exited with 0 +++ [pid 5059] <... umount2 resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... umount2 resumed>) = 0 [pid 5155] unlink("./bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] newfstatat(AT_FDCWD, "./7/file1", [pid 5057] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5155] <... unlink resumed>) = 0 [pid 5059] newfstatat(AT_FDCWD, "./7/file1", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5155] exit_group(0 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5056] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5155] <... exit_group resumed>) = ? [pid 5059] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] unlink("./7/binderfs" [pid 5059] <... openat resumed>) = 4 [pid 5058] <... openat resumed>) = 3 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5059] newfstatat(4, "", [pid 5058] newfstatat(3, "", [pid 5056] newfstatat(4, "", [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5058] getdents64(3, [pid 5056] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] getdents64(4, [pid 5059] close(4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] <... close resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5056] close(4 [pid 5059] rmdir("./7/file1" [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] <... rmdir resumed>) = 0 [pid 5058] unlink("./7/binderfs" [pid 5056] <... close resumed>) = 0 [pid 5059] getdents64(3, [pid 5058] <... unlink resumed>) = 0 [pid 5056] rmdir("./7/file1" [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... rmdir resumed>) = 0 [pid 5059] close(3) = 0 [pid 5059] rmdir("./7" [pid 5056] getdents64(3, [pid 5059] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./7" [pid 5059] mkdir("./8", 0777 [pid 5056] <... rmdir resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] mkdir("./8", 0777 [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5056] <... mkdir resumed>) = 0 [pid 5059] <... openat resumed>) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5155] +++ exited with 0 +++ [pid 5058] <... umount2 resumed>) = 0 [pid 5057] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5058] newfstatat(AT_FDCWD, "./7/file1", [pid 5057] newfstatat(AT_FDCWD, "./7/file1", [pid 5054] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... restart_syscall resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(4, "", [pid 5055] <... ioctl resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5055] close(3 [pid 5054] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] newfstatat(4, "", [pid 5058] getdents64(4, [pid 5055] <... close resumed>) = 0 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5054] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5054] <... openat resumed>) = 3 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./7/file1") = 0 [pid 5058] getdents64(3, [pid 5057] getdents64(4, [pid 5054] newfstatat(3, "", ./strace-static-x86_64: Process 5161 attached [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] close(3) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5058] rmdir("./7" [pid 5057] <... close resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] rmdir("./7/file1") = 0 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5161 [pid 5058] mkdir("./8", 0777 [pid 5057] getdents64(3, [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./7") = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5161] set_robust_list(0x55555695e660, 24 [pid 5058] <... openat resumed>) = 3 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] mkdir("./8", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5161] <... set_robust_list resumed>) = 0 [pid 5059] <... ioctl resumed>) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5054] getdents64(3, [pid 5161] chdir("./8" [pid 5057] <... openat resumed>) = 3 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5161] <... chdir resumed>) = 0 [pid 5059] close(3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] close(3 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] <... close resumed>) = 0 [pid 5054] newfstatat(AT_FDCWD, "./7/binderfs", [pid 5161] <... prctl resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] <... close resumed>) = 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5161] setpgid(0, 0 [pid 5054] unlink("./7/binderfs" [pid 5161] <... setpgid resumed>) = 0 [pid 5054] <... unlink resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5054] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5162 attached [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5162] set_robust_list(0x55555695e660, 24) = 0 [pid 5162] chdir("./8" [pid 5161] <... openat resumed>) = 3 [pid 5162] <... chdir resumed>) = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5163 attached [pid 5161] write(3, "1000", 4 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5162 [pid 5054] <... umount2 resumed>) = 0 [pid 5163] set_robust_list(0x55555695e660, 24 [pid 5162] <... prctl resumed>) = 0 [pid 5161] <... write resumed>) = 4 [pid 5163] <... set_robust_list resumed>) = 0 [pid 5162] setpgid(0, 0 [pid 5161] close(3 [pid 5054] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5163] chdir("./8") = 0 [pid 5162] <... setpgid resumed>) = 0 [pid 5161] <... close resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5163 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5054] newfstatat(AT_FDCWD, "./7/file1", [pid 5163] <... prctl resumed>) = 0 [pid 5161] symlink("/dev/binderfs", "./binderfs" [pid 5163] setpgid(0, 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5163] <... setpgid resumed>) = 0 [pid 5162] <... openat resumed>) = 3 [pid 5161] <... symlink resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5162] write(3, "1000", 4 [pid 5054] umount2("./7/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5163] write(3, "1000", 4 [pid 5162] <... write resumed>) = 4 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5163] <... write resumed>) = 4 [pid 5162] close(3 [pid 5054] openat(AT_FDCWD, "./7/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5163] close(3 [pid 5162] <... close resumed>) = 0 [pid 5054] <... openat resumed>) = 4 [pid 5163] <... close resumed>) = 0 [pid 5162] symlink("/dev/binderfs", "./binderfs" [pid 5163] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5162] <... symlink resumed>) = 0 [pid 5161] memfd_create("syzkaller", 0 [pid 5054] newfstatat(4, "", [pid 5163] memfd_create("syzkaller", 0 [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(4, [pid 5162] memfd_create("syzkaller", 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5163] <... memfd_create resumed>) = 3 [pid 5161] <... memfd_create resumed>) = 3 [pid 5054] getdents64(4, [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5162] <... memfd_create resumed>) = 3 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5163] <... mmap resumed>) = 0x7f4da0c00000 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5054] close(4 [pid 5162] <... mmap resumed>) = 0x7f4da0c00000 [pid 5054] <... close resumed>) = 0 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5054] rmdir("./7/file1" [pid 5161] <... mmap resumed>) = 0x7f4da0c00000 [pid 5054] <... rmdir resumed>) = 0 [pid 5054] getdents64(3, [pid 5163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [pid 5054] rmdir("./7") = 0 [pid 5054] mkdir("./8", 0777) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5163] <... write resumed>) = 2097152 [pid 5162] <... write resumed>) = 2097152 [pid 5161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5058] <... ioctl resumed>) = 0 [pid 5163] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5162] munmap(0x7f4da0c00000, 138412032 [pid 5163] <... openat resumed>) = 4 [pid 5058] close(3) = 0 [pid 5162] <... munmap resumed>) = 0 [pid 5163] ioctl(4, LOOP_SET_FD, 3 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5164 attached [pid 5162] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5161] <... write resumed>) = 2097152 [pid 5057] close(3 [pid 5164] set_robust_list(0x55555695e660, 24 [pid 5162] <... openat resumed>) = 4 [pid 5161] munmap(0x7f4da0c00000, 138412032 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5164 [pid 5057] <... close resumed>) = 0 [pid 5164] <... set_robust_list resumed>) = 0 [pid 5162] ioctl(4, LOOP_SET_FD, 3 [pid 5161] <... munmap resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5164] chdir("./8" [pid 5163] <... ioctl resumed>) = 0 [pid 5162] <... ioctl resumed>) = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5164] <... chdir resumed>) = 0 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5163] close(3 [pid 5164] <... prctl resumed>) = 0 [pid 5163] <... close resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5164] setpgid(0, 0 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5165 [pid 5164] <... setpgid resumed>) = 0 [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3 [pid 5163] close(4./strace-static-x86_64: Process 5165 attached [pid 5164] <... close resumed>) = 0 [pid 5163] <... close resumed>) = 0 [pid 5161] <... openat resumed>) = 4 [pid 5165] set_robust_list(0x55555695e660, 24 [pid 5164] symlink("/dev/binderfs", "./binderfs" [pid 5163] mkdir("./file1", 0777 [pid 5161] ioctl(4, LOOP_SET_FD, 3 [pid 5165] <... set_robust_list resumed>) = 0 [pid 5164] <... symlink resumed>) = 0 [pid 5164] memfd_create("syzkaller", 0 [pid 5163] <... mkdir resumed>) = 0 [pid 5164] <... memfd_create resumed>) = 3 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5165] chdir("./8" [pid 5164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5163] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5165] <... chdir resumed>) = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5162] close(3 [pid 5165] <... prctl resumed>) = 0 [pid 5162] <... close resumed>) = 0 [pid 5165] setpgid(0, 0 [pid 5162] close(4) = 0 [pid 5162] mkdir("./file1", 0777) = 0 [pid 5162] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5165] <... setpgid resumed>) = 0 [ 58.153905][ T5163] loop2: detected capacity change from 0 to 4096 [ 58.162175][ T5162] loop5: detected capacity change from 0 to 4096 [ 58.178031][ T5161] loop1: detected capacity change from 0 to 4096 [ 58.188607][ T5163] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5161] <... ioctl resumed>) = 0 [pid 5054] close(3 [pid 5165] <... openat resumed>) = 3 [pid 5161] close(3 [pid 5054] <... close resumed>) = 0 [pid 5161] <... close resumed>) = 0 [pid 5165] write(3, "1000", 4 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5161] close(4 [pid 5165] <... write resumed>) = 4 [pid 5161] <... close resumed>) = 0 ./strace-static-x86_64: Process 5166 attached [pid 5166] set_robust_list(0x55555695e660, 24) = 0 [pid 5166] chdir("./8" [pid 5164] <... write resumed>) = 2097152 [pid 5166] <... chdir resumed>) = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] close(3 [pid 5161] mkdir("./file1", 0777 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5166 [pid 5166] setpgid(0, 0) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5165] <... close resumed>) = 0 [pid 5161] <... mkdir resumed>) = 0 [pid 5166] <... openat resumed>) = 3 [pid 5165] symlink("/dev/binderfs", "./binderfs" [pid 5161] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5166] write(3, "1000", 4) = 4 [pid 5165] <... symlink resumed>) = 0 [pid 5166] close(3) = 0 [pid 5165] memfd_create("syzkaller", 0 [pid 5166] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5166] memfd_create("syzkaller", 0) = 3 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5165] <... memfd_create resumed>) = 3 [pid 5164] munmap(0x7f4da0c00000, 138412032 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5164] <... munmap resumed>) = 0 [pid 5165] <... mmap resumed>) = 0x7f4da0c00000 [ 58.200566][ T5162] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.215572][ T5163] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 58.228563][ T5161] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.242249][ T5162] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5164] ioctl(4, LOOP_SET_FD, 3 [pid 5166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5164] <... ioctl resumed>) = 0 [pid 5164] close(3) = 0 [pid 5164] close(4) = 0 [pid 5164] mkdir("./file1", 0777) = 0 [pid 5164] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5166] <... write resumed>) = 2097152 [pid 5165] <... write resumed>) = 2097152 [ 58.254216][ T5164] loop4: detected capacity change from 0 to 4096 [ 58.268818][ T5161] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 58.278517][ T5164] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.279766][ T5164] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5166] munmap(0x7f4da0c00000, 138412032 [pid 5165] munmap(0x7f4da0c00000, 138412032 [pid 5163] <... mount resumed>) = 0 [pid 5163] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5166] <... munmap resumed>) = 0 [pid 5165] <... munmap resumed>) = 0 [pid 5163] chdir("./file1" [pid 5162] <... mount resumed>) = 0 [pid 5163] <... chdir resumed>) = 0 [pid 5162] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5162] chdir("./file1") = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5162] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5162] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5163] <... openat resumed>) = -1 EBUSY (Device or resource busy) [ 58.310130][ T5167] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.314910][ T5168] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.340243][ T5169] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.350986][ T5061] udevd[5061]: incorrect nilfs2 checksum on /dev/loop1 [pid 5163] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5165] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5166] <... openat resumed>) = 4 [pid 5165] <... openat resumed>) = 4 [pid 5165] ioctl(4, LOOP_SET_FD, 3 [pid 5166] ioctl(4, LOOP_SET_FD, 3 [pid 5165] <... ioctl resumed>) = 0 [pid 5163] <... open resumed>) = 4 [pid 5161] <... mount resumed>) = 0 [pid 5166] <... ioctl resumed>) = 0 [pid 5165] close(3 [pid 5163] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5161] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5166] close(3 [pid 5165] <... close resumed>) = 0 [pid 5163] <... open resumed>) = 5 [pid 5161] <... openat resumed>) = 3 [pid 5166] <... close resumed>) = 0 [pid 5165] close(4 [pid 5163] ftruncate(5, 33587195 [pid 5161] chdir("./file1" [pid 5165] <... close resumed>) = 0 [pid 5165] mkdir("./file1", 0777 [pid 5161] <... chdir resumed>) = 0 [pid 5161] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5166] close(4 [pid 5165] <... mkdir resumed>) = 0 [pid 5164] <... mount resumed>) = 0 [pid 5163] <... ftruncate resumed>) = 0 [pid 5162] <... open resumed>) = 4 [pid 5161] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5163] sendfile(4, 5, NULL, 281474978811909 [pid 5162] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5161] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5162] <... open resumed>) = 5 [pid 5162] ftruncate(5, 33587195 [pid 5166] <... close resumed>) = 0 [pid 5162] <... ftruncate resumed>) = 0 [ 58.359327][ T5165] loop3: detected capacity change from 0 to 4096 [ 58.359385][ T5166] loop0: detected capacity change from 0 to 4096 [ 58.371064][ T5170] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.381443][ T5139] udevd[5139]: incorrect nilfs2 checksum on /dev/loop4 [pid 5162] sendfile(4, 5, NULL, 281474978811909 [pid 5165] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5164] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5161] <... open resumed>) = 4 [pid 5161] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5166] mkdir("./file1", 0777) = 0 [pid 5166] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5164] <... openat resumed>) = 3 [pid 5161] <... open resumed>) = 5 [pid 5164] chdir("./file1" [pid 5161] ftruncate(5, 33587195 [pid 5164] <... chdir resumed>) = 0 [pid 5164] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5161] <... ftruncate resumed>) = 0 [pid 5164] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] sendfile(4, 5, NULL, 281474978811909 [pid 5164] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5164] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [ 58.433458][ T5165] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.438420][ T5166] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.460407][ T5166] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 58.460868][ T5165] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5164] ftruncate(5, 33587195 [pid 5166] <... mount resumed>) = 0 [pid 5166] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5165] <... mount resumed>) = 0 [pid 5164] <... ftruncate resumed>) = 0 [pid 5165] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5164] sendfile(4, 5, NULL, 281474978811909 [pid 5166] chdir("./file1" [pid 5165] <... openat resumed>) = 3 [pid 5165] chdir("./file1" [pid 5166] <... chdir resumed>) = 0 [pid 5165] <... chdir resumed>) = 0 [pid 5165] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5165] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5166] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5165] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5166] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5165] <... open resumed>) = 4 [pid 5165] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5166] <... open resumed>) = 4 [pid 5165] ftruncate(5, 33587195 [pid 5166] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5166] ftruncate(5, 33587195 [pid 5165] <... ftruncate resumed>) = 0 [pid 5165] sendfile(4, 5, NULL, 281474978811909 [pid 5166] <... ftruncate resumed>) = 0 [ 58.493099][ T5171] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.504012][ T5172] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5166] sendfile(4, 5, NULL, 281474978811909 [pid 5162] <... sendfile resumed>) = 368640 [pid 5162] unlink("./bus") = 0 [pid 5162] exit_group(0) = ? [pid 5166] <... sendfile resumed>) = 368640 [pid 5163] <... sendfile resumed>) = 368640 [pid 5166] unlink("./bus" [pid 5163] unlink("./bus" [pid 5166] <... unlink resumed>) = 0 [pid 5163] <... unlink resumed>) = 0 [pid 5166] exit_group(0 [pid 5163] exit_group(0 [pid 5166] <... exit_group resumed>) = ? [pid 5163] <... exit_group resumed>) = ? [pid 5162] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5059] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5166] +++ exited with 0 +++ [pid 5059] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5059] <... openat resumed>) = 3 [pid 5059] newfstatat(3, "", [pid 5054] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5163] +++ exited with 0 +++ [pid 5054] <... openat resumed>) = 3 [pid 5059] getdents64(3, [pid 5054] newfstatat(3, "", [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... restart_syscall resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] getdents64(3, [pid 5059] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] unlink("./8/binderfs" [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./8/binderfs" [pid 5059] <... unlink resumed>) = 0 [pid 5054] <... unlink resumed>) = 0 [pid 5059] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./8/binderfs" [pid 5059] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... unlink resumed>) = 0 [pid 5054] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] newfstatat(AT_FDCWD, "./8/file1", [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... openat resumed>) = 4 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] newfstatat(4, "", [pid 5054] <... openat resumed>) = 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, [pid 5054] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, [pid 5054] getdents64(4, [pid 5059] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] close(4 [pid 5054] close(4 [pid 5059] <... close resumed>) = 0 [pid 5054] <... close resumed>) = 0 [pid 5059] rmdir("./8/file1" [pid 5054] rmdir("./8/file1" [pid 5059] <... rmdir resumed>) = 0 [pid 5054] <... rmdir resumed>) = 0 [pid 5059] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5059] close(3) = 0 [pid 5054] getdents64(3, [pid 5059] rmdir("./8") = 0 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [pid 5054] rmdir("./8") = 0 [pid 5059] mkdir("./9", 0777) = 0 [pid 5054] mkdir("./9", 0777) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5054] <... openat resumed>) = 3 [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5161] <... sendfile resumed>) = 368640 [pid 5161] unlink("./bus") = 0 [pid 5161] exit_group(0) = ? [pid 5056] <... umount2 resumed>) = 0 [pid 5164] <... sendfile resumed>) = 368640 [pid 5164] unlink("./bus" [pid 5056] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5164] <... unlink resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5164] exit_group(0 [pid 5056] getdents64(4, [pid 5164] <... exit_group resumed>) = ? [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./8/file1") = 0 [pid 5161] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5055] restart_syscall(<... resuming interrupted clone ...> [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./8") = 0 [pid 5055] <... restart_syscall resumed>) = 0 [pid 5055] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./8/binderfs") = 0 [pid 5055] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] mkdir("./9", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5054] close(3) = 0 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5173 attached [pid 5165] <... sendfile resumed>) = 368640 [pid 5059] <... ioctl resumed>) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5059] close(3 [pid 5173] set_robust_list(0x55555695e660, 24 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5165] unlink("./bus" [pid 5173] <... set_robust_list resumed>) = 0 [pid 5173] chdir("./9") = 0 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5173 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] setpgid(0, 0) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5174 [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5173] write(3, "1000", 4) = 4 [pid 5173] close(3) = 0 [pid 5173] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5055] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ./strace-static-x86_64: Process 5174 attached [pid 5173] memfd_create("syzkaller", 0 [pid 5055] newfstatat(AT_FDCWD, "./8/file1", [pid 5174] set_robust_list(0x55555695e660, 24 [pid 5165] <... unlink resumed>) = 0 [pid 5174] <... set_robust_list resumed>) = 0 [pid 5173] <... memfd_create resumed>) = 3 [pid 5165] exit_group(0 [pid 5164] +++ exited with 0 +++ [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5174] chdir("./9" [pid 5165] <... exit_group resumed>) = ? [pid 5174] <... chdir resumed>) = 0 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5055] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5174] setpgid(0, 0) = 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5174] write(3, "1000", 4) = 4 [pid 5174] close(3) = 0 [pid 5174] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5174] memfd_create("syzkaller", 0) = 3 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5058] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5173] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5055] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] newfstatat(4, "", [pid 5058] getdents64(3, [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] getdents64(4, [pid 5058] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] getdents64(4, [pid 5058] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./8/binderfs" [pid 5056] <... ioctl resumed>) = 0 [pid 5055] close(4) = 0 [pid 5058] <... unlink resumed>) = 0 [pid 5056] close(3 [pid 5055] rmdir("./8/file1" [pid 5056] <... close resumed>) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 ./strace-static-x86_64: Process 5175 attached [pid 5055] rmdir("./8" [pid 5175] set_robust_list(0x55555695e660, 24) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5175 [pid 5055] <... rmdir resumed>) = 0 [pid 5058] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] chdir("./9") = 0 [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5175] setpgid(0, 0 [pid 5174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5165] +++ exited with 0 +++ [pid 5055] mkdir("./9", 0777 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5057] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] <... mkdir resumed>) = 0 [pid 5175] <... setpgid resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5175] <... openat resumed>) = 3 [pid 5057] getdents64(3, [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5057] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./8/binderfs", [pid 5175] write(3, "1000", 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5175] <... write resumed>) = 4 [pid 5057] unlink("./8/binderfs" [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5175] close(3 [pid 5057] <... unlink resumed>) = 0 [pid 5175] <... close resumed>) = 0 [pid 5057] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5175] memfd_create("syzkaller", 0 [pid 5058] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] <... memfd_create resumed>) = 3 [pid 5174] <... write resumed>) = 2097152 [pid 5173] <... write resumed>) = 2097152 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = 0 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5174] munmap(0x7f4da0c00000, 138412032 [pid 5173] munmap(0x7f4da0c00000, 138412032 [pid 5058] newfstatat(AT_FDCWD, "./8/file1", [pid 5175] <... mmap resumed>) = 0x7f4da0c00000 [pid 5057] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5174] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5173] <... munmap resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5174] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5174] <... openat resumed>) = 4 [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5058] getdents64(4, [pid 5173] <... openat resumed>) = 4 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5174] ioctl(4, LOOP_SET_FD, 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5173] ioctl(4, LOOP_SET_FD, 3 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5174] <... ioctl resumed>) = 0 [pid 5058] close(4 [pid 5057] newfstatat(AT_FDCWD, "./8/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./8/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./8/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./8/file1") = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./8" [pid 5174] close(3 [pid 5173] <... ioctl resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5058] rmdir("./8/file1" [pid 5057] mkdir("./9", 0777 [pid 5174] <... close resumed>) = 0 [pid 5173] close(3 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5058] getdents64(3, [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5174] close(4 [pid 5173] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5058] close(3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./8" [pid 5174] <... close resumed>) = 0 [pid 5175] <... write resumed>) = 2097152 [pid 5173] close(4 [pid 5058] <... rmdir resumed>) = 0 [pid 5058] mkdir("./9", 0777 [pid 5175] munmap(0x7f4da0c00000, 138412032 [pid 5174] mkdir("./file1", 0777 [pid 5173] <... close resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5173] mkdir("./file1", 0777) = 0 [pid 5173] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5175] <... munmap resumed>) = 0 [pid 5174] <... mkdir resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5175] openat(AT_FDCWD, "/dev/loop2", O_RDWR [ 58.858417][ T5174] loop5: detected capacity change from 0 to 4096 [ 58.866361][ T5173] loop0: detected capacity change from 0 to 4096 [ 58.892126][ T5173] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5174] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5175] <... openat resumed>) = 4 [pid 5055] <... ioctl resumed>) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5175] ioctl(4, LOOP_SET_FD, 3 [pid 5055] close(3) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555695e650) = 5176 ./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x55555695e660, 24) = 0 [pid 5176] chdir("./9") = 0 [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5176] memfd_create("syzkaller", 0 [pid 5175] <... ioctl resumed>) = 0 [pid 5176] <... memfd_create resumed>) = 3 [pid 5175] close(3 [pid 5057] <... ioctl resumed>) = 0 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5175] <... close resumed>) = 0 [pid 5176] <... mmap resumed>) = 0x7f4da0c00000 [pid 5175] close(4 [pid 5057] close(3 [pid 5175] <... close resumed>) = 0 [pid 5175] mkdir("./file1", 0777 [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5175] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5177 attached [pid 5175] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5177] set_robust_list(0x55555695e660, 24) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5177 [ 58.904207][ T5175] loop2: detected capacity change from 0 to 4096 [ 58.911894][ T5174] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 58.927510][ T5173] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [ 58.944967][ T5174] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5177] chdir("./9") = 0 [pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5173] <... mount resumed>) = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5173] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5058] <... ioctl resumed>) = 0 [pid 5177] <... prctl resumed>) = 0 [pid 5173] <... openat resumed>) = 3 [pid 5058] close(3 [pid 5173] chdir("./file1" [pid 5058] <... close resumed>) = 0 [pid 5173] <... chdir resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5179 [pid 5173] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000./strace-static-x86_64: Process 5179 attached [pid 5179] set_robust_list(0x55555695e660, 24 [pid 5177] setpgid(0, 0) = 0 [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5179] <... set_robust_list resumed>) = 0 [pid 5177] <... openat resumed>) = 3 [pid 5179] chdir("./9" [pid 5177] write(3, "1000", 4) = 4 [ 58.966202][ T5178] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 58.968500][ T5175] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5177] close(3 [pid 5179] <... chdir resumed>) = 0 [pid 5177] <... close resumed>) = 0 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0) = 0 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] symlink("/dev/binderfs", "./binderfs" [pid 5176] <... write resumed>) = 2097152 [pid 5173] <... open resumed>) = 4 [pid 5179] <... symlink resumed>) = 0 [pid 5173] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5173] ftruncate(5, 33587195 [pid 5179] memfd_create("syzkaller", 0) = 3 [pid 5177] symlink("/dev/binderfs", "./binderfs" [pid 5173] <... ftruncate resumed>) = 0 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5173] sendfile(4, 5, NULL, 281474978811909 [pid 5179] <... mmap resumed>) = 0x7f4da0c00000 [pid 5177] <... symlink resumed>) = 0 [pid 5177] memfd_create("syzkaller", 0 [pid 5176] munmap(0x7f4da0c00000, 138412032 [pid 5179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5177] <... memfd_create resumed>) = 3 [pid 5176] <... munmap resumed>) = 0 [pid 5174] <... mount resumed>) = 0 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5174] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5177] <... mmap resumed>) = 0x7f4da0c00000 [pid 5174] chdir("./file1" [pid 5176] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [ 59.011663][ T5180] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 59.031337][ T5175] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 59.047768][ T5181] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5176] ioctl(4, LOOP_SET_FD, 3 [pid 5174] <... chdir resumed>) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5174] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5176] <... ioctl resumed>) = 0 [pid 5175] <... mount resumed>) = 0 [pid 5174] <... open resumed>) = 4 [pid 5175] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5174] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5175] <... openat resumed>) = 3 [pid 5174] <... open resumed>) = 5 [pid 5175] chdir("./file1") = 0 [pid 5174] ftruncate(5, 33587195 [pid 5175] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5176] close(3 [pid 5174] <... ftruncate resumed>) = 0 [pid 5176] <... close resumed>) = 0 [pid 5175] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5174] sendfile(4, 5, NULL, 281474978811909 [pid 5175] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5176] close(4) = 0 [pid 5176] mkdir("./file1", 0777) = 0 [pid 5175] <... open resumed>) = 4 [pid 5175] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5175] ftruncate(5, 33587195 [ 59.049507][ T5176] loop1: detected capacity change from 0 to 4096 [pid 5176] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5175] <... ftruncate resumed>) = 0 [pid 5175] sendfile(4, 5, NULL, 281474978811909 [pid 5177] <... write resumed>) = 2097152 [pid 5177] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5179] <... write resumed>) = 2097152 [pid 5179] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 59.094681][ T5176] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5179] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5177] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5179] close(3 [pid 5177] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5179] <... close resumed>) = 0 [pid 5179] close(4) = 0 [pid 5179] mkdir("./file1", 0777) = 0 [pid 5179] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5177] close(3) = 0 [pid 5177] close(4) = 0 [pid 5177] mkdir("./file1", 0777) = 0 [ 59.143386][ T5179] loop4: detected capacity change from 0 to 4096 [ 59.152676][ T5177] loop3: detected capacity change from 0 to 4096 [ 59.160251][ T5176] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 59.180321][ T5179] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5177] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5173] <... sendfile resumed>) = 368640 [ 59.207036][ T5179] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 59.216661][ T5177] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 59.242495][ T5177] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5173] unlink("./bus") = 0 [pid 5173] exit_group(0) = ? [pid 5176] <... mount resumed>) = 0 [pid 5176] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5179] <... mount resumed>) = 0 [pid 5176] <... openat resumed>) = 3 [pid 5176] chdir("./file1" [pid 5179] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5176] <... chdir resumed>) = 0 [pid 5176] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5179] <... openat resumed>) = 3 [pid 5176] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5176] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5179] chdir("./file1" [pid 5173] +++ exited with 0 +++ [pid 5179] <... chdir resumed>) = 0 [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5054] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5179] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5054] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5054] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5176] <... open resumed>) = 4 [pid 5054] getdents64(3, [pid 5176] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5177] <... mount resumed>) = 0 [pid 5176] <... open resumed>) = 5 [pid 5054] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5177] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5176] ftruncate(5, 33587195 [pid 5054] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./9/binderfs" [pid 5177] <... openat resumed>) = 3 [pid 5054] <... unlink resumed>) = 0 [ 59.253478][ T5182] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 59.270217][ T5183] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 59.295292][ T5184] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5054] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5179] <... open resumed>) = 4 [pid 5177] chdir("./file1" [pid 5176] <... ftruncate resumed>) = 0 [pid 5179] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5177] <... chdir resumed>) = 0 [pid 5176] sendfile(4, 5, NULL, 281474978811909 [pid 5174] <... sendfile resumed>) = 368640 [pid 5174] unlink("./bus" [pid 5179] <... open resumed>) = 5 [pid 5174] <... unlink resumed>) = 0 [pid 5174] exit_group(0 [pid 5177] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5174] <... exit_group resumed>) = ? [pid 5177] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5179] ftruncate(5, 33587195 [pid 5177] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5179] <... ftruncate resumed>) = 0 [pid 5177] <... open resumed>) = 4 [pid 5175] <... sendfile resumed>) = 368640 [pid 5054] <... umount2 resumed>) = 0 [pid 5179] sendfile(4, 5, NULL, 281474978811909 [pid 5177] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5054] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5175] unlink("./bus" [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5177] <... open resumed>) = 5 [pid 5054] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5177] ftruncate(5, 33587195 [pid 5175] <... unlink resumed>) = 0 [pid 5054] <... openat resumed>) = 4 [pid 5177] <... ftruncate resumed>) = 0 [pid 5175] exit_group(0 [pid 5177] sendfile(4, 5, NULL, 281474978811909 [pid 5175] <... exit_group resumed>) = ? [pid 5054] newfstatat(4, "", [pid 5174] +++ exited with 0 +++ [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(4, [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5054] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] restart_syscall(<... resuming interrupted clone ...> [pid 5054] getdents64(4, [pid 5175] +++ exited with 0 +++ [pid 5059] <... restart_syscall resumed>) = 0 [pid 5054] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5054] close(4 [pid 5059] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... close resumed>) = 0 [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] rmdir("./9/file1" [pid 5059] newfstatat(3, "", [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5059] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5054] <... rmdir resumed>) = 0 [pid 5059] unlink("./9/binderfs") = 0 [pid 5056] <... openat resumed>) = 3 [pid 5054] getdents64(3, [pid 5059] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] getdents64(3, [pid 5054] close(3 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] <... close resumed>) = 0 [pid 5056] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] rmdir("./9") = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] mkdir("./10", 0777) = 0 [pid 5056] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./9/binderfs") = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5056] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] ioctl(3, LOOP_CLR_FD [pid 5056] <... umount2 resumed>) = 0 [pid 5059] <... umount2 resumed>) = 0 [pid 5056] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./9/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./9") = 0 [pid 5056] mkdir("./10", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5059] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5059] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5059] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5059] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5059] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5059] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5059] close(4) = 0 [pid 5059] rmdir("./9/file1") = 0 [pid 5054] <... ioctl resumed>) = 0 [pid 5059] getdents64(3, [pid 5054] close(3) = 0 [pid 5054] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5185 attached [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5054] <... clone resumed>, child_tidptr=0x55555695e650) = 5185 [pid 5185] set_robust_list(0x55555695e660, 24 [pid 5059] close(3 [pid 5185] <... set_robust_list resumed>) = 0 [pid 5059] <... close resumed>) = 0 [pid 5059] rmdir("./9" [pid 5185] chdir("./10" [pid 5059] <... rmdir resumed>) = 0 [pid 5185] <... chdir resumed>) = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5059] mkdir("./10", 0777 [pid 5185] <... prctl resumed>) = 0 [pid 5059] <... mkdir resumed>) = 0 [pid 5185] setpgid(0, 0) = 0 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5059] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5185] <... openat resumed>) = 3 [pid 5185] write(3, "1000", 4) = 4 [pid 5179] <... sendfile resumed>) = 368640 [pid 5185] close(3 [pid 5179] unlink("./bus" [pid 5185] <... close resumed>) = 0 [pid 5185] symlink("/dev/binderfs", "./binderfs" [pid 5179] <... unlink resumed>) = 0 [pid 5185] <... symlink resumed>) = 0 [pid 5179] exit_group(0) = ? [pid 5185] memfd_create("syzkaller", 0) = 3 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5179] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5058] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./9/binderfs") = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3 [pid 5058] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5186 attached , child_tidptr=0x55555695e650) = 5186 [pid 5186] set_robust_list(0x55555695e660, 24) = 0 [pid 5186] chdir("./10") = 0 [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5186] setpgid(0, 0) = 0 [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5177] <... sendfile resumed>) = 368640 [pid 5186] <... openat resumed>) = 3 [pid 5186] write(3, "1000", 4) = 4 [pid 5186] close(3) = 0 [pid 5185] <... write resumed>) = 2097152 [pid 5177] unlink("./bus" [pid 5059] <... ioctl resumed>) = 0 [pid 5186] symlink("/dev/binderfs", "./binderfs" [pid 5185] munmap(0x7f4da0c00000, 138412032 [pid 5186] <... symlink resumed>) = 0 [pid 5185] <... munmap resumed>) = 0 [pid 5177] <... unlink resumed>) = 0 [pid 5186] memfd_create("syzkaller", 0 [pid 5177] exit_group(0 [pid 5186] <... memfd_create resumed>) = 3 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5177] <... exit_group resumed>) = ? [pid 5059] close(3 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5185] <... openat resumed>) = 4 [pid 5058] <... umount2 resumed>) = 0 [pid 5186] <... mmap resumed>) = 0x7f4da0c00000 [pid 5185] ioctl(4, LOOP_SET_FD, 3 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5187 attached ) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./9/file1", [pid 5187] set_robust_list(0x55555695e660, 24 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5187] <... set_robust_list resumed>) = 0 [pid 5058] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] <... clone resumed>, child_tidptr=0x55555695e650) = 5187 [pid 5187] chdir("./10" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5187] <... chdir resumed>) = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5177] +++ exited with 0 +++ [pid 5058] <... openat resumed>) = 4 [pid 5187] <... prctl resumed>) = 0 [pid 5185] <... ioctl resumed>) = 0 [pid 5058] newfstatat(4, "", [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5187] setpgid(0, 0 [pid 5185] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5187] <... setpgid resumed>) = 0 [pid 5185] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5185] close(4 [pid 5058] getdents64(4, [pid 5057] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] newfstatat(3, "", [pid 5187] <... openat resumed>) = 3 [pid 5186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5185] <... close resumed>) = 0 [pid 5058] close(4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5187] write(3, "1000", 4 [pid 5185] mkdir("./file1", 0777 [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./9/binderfs") = 0 [pid 5058] rmdir("./9/file1" [pid 5057] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5187] <... write resumed>) = 4 [pid 5058] getdents64(3, [pid 5185] <... mkdir resumed>) = 0 [pid 5187] close(3 [pid 5185] mount("/dev/loop0", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [ 59.570754][ T5185] loop0: detected capacity change from 0 to 4096 [pid 5187] <... close resumed>) = 0 [pid 5187] symlink("/dev/binderfs", "./binderfs" [pid 5058] close(3 [pid 5187] <... symlink resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5176] <... sendfile resumed>) = 368640 [pid 5187] memfd_create("syzkaller", 0 [pid 5058] rmdir("./9" [pid 5187] <... memfd_create resumed>) = 3 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5186] <... write resumed>) = 2097152 [pid 5176] unlink("./bus" [pid 5058] <... rmdir resumed>) = 0 [pid 5058] mkdir("./10", 0777 [pid 5187] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] <... mkdir resumed>) = 0 [pid 5186] munmap(0x7f4da0c00000, 138412032 [pid 5176] <... unlink resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5176] exit_group(0) = ? [pid 5187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5186] <... munmap resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 59.614478][ T5185] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 59.632375][ T5185] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5186] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5187] <... write resumed>) = 2097152 [pid 5186] close(3 [pid 5185] <... mount resumed>) = 0 [pid 5187] munmap(0x7f4da0c00000, 138412032 [pid 5186] <... close resumed>) = 0 [pid 5185] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5186] close(4 [pid 5057] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5187] <... munmap resumed>) = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5186] <... close resumed>) = 0 [pid 5185] <... openat resumed>) = 3 [pid 5176] +++ exited with 0 +++ [pid 5057] <... openat resumed>) = 4 [pid 5186] mkdir("./file1", 0777 [pid 5185] chdir("./file1" [pid 5057] newfstatat(4, "", [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5055] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5055] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./9/binderfs") = 0 [pid 5055] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5186] <... mkdir resumed>) = 0 [pid 5185] <... chdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, [pid 5186] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5187] <... openat resumed>) = 4 [pid 5185] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5057] getdents64(4, [pid 5187] ioctl(4, LOOP_SET_FD, 3 [pid 5185] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [ 59.660172][ T5186] loop2: detected capacity change from 0 to 4096 [ 59.672339][ T5188] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5057] close(4 [pid 5058] <... ioctl resumed>) = 0 [pid 5187] <... ioctl resumed>) = 0 [pid 5185] <... open resumed>) = 4 [pid 5057] <... close resumed>) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5058] close(3 [pid 5055] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... close resumed>) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] newfstatat(AT_FDCWD, "./9/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5189 [pid 5055] umount2("./9/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5185] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5057] rmdir("./9/file1" [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./9/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4) = 0 [pid 5055] rmdir("./9/file1" [pid 5057] <... rmdir resumed>) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5185] <... open resumed>) = 5 [pid 5057] getdents64(3, ./strace-static-x86_64: Process 5189 attached [pid 5189] set_robust_list(0x55555695e660, 24 [pid 5185] ftruncate(5, 33587195 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5189] <... set_robust_list resumed>) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3 [pid 5189] chdir("./10" [pid 5055] <... close resumed>) = 0 [pid 5057] close(3 [pid 5189] <... chdir resumed>) = 0 [pid 5055] rmdir("./9" [pid 5057] <... close resumed>) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5055] mkdir("./10", 0777 [pid 5189] <... prctl resumed>) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5189] setpgid(0, 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5189] <... setpgid resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5189] <... openat resumed>) = 3 [pid 5189] write(3, "1000", 4) = 4 [pid 5189] close(3) = 0 [pid 5057] rmdir("./9" [pid 5189] symlink("/dev/binderfs", "./binderfs" [pid 5185] <... ftruncate resumed>) = 0 [pid 5189] <... symlink resumed>) = 0 [pid 5189] memfd_create("syzkaller", 0 [pid 5185] sendfile(4, 5, NULL, 281474978811909 [pid 5057] <... rmdir resumed>) = 0 [pid 5189] <... memfd_create resumed>) = 3 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] mkdir("./10", 0777 [pid 5189] <... mmap resumed>) = 0x7f4da0c00000 [pid 5187] close(3 [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5187] <... close resumed>) = 0 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5187] close(4) = 0 [pid 5187] mkdir("./file1", 0777) = 0 [ 59.706345][ T5186] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 59.710250][ T5187] loop5: detected capacity change from 0 to 4096 [ 59.728355][ T5186] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5187] mount("/dev/loop5", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5186] <... mount resumed>) = 0 [pid 5186] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5186] chdir("./file1") = 0 [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5186] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5057] <... ioctl resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5191 attached [pid 5191] set_robust_list(0x55555695e660, 24 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5191 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5191] chdir("./10") = 0 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5191] setpgid(0, 0) = 0 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] symlink("/dev/binderfs", "./binderfs" [pid 5055] close(3) = 0 [pid 5189] <... write resumed>) = 2097152 [pid 5191] <... symlink resumed>) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5191] memfd_create("syzkaller", 0) = 3 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [ 59.754843][ T5187] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024) [ 59.778815][ T5190] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 59.789433][ T5187] NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5189] munmap(0x7f4da0c00000, 138412032 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5192 [pid 5189] <... munmap resumed>) = 0 [pid 5189] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 5192 attached ) = 4 [pid 5192] set_robust_list(0x55555695e660, 24) = 0 [pid 5192] chdir("./10" [pid 5189] ioctl(4, LOOP_SET_FD, 3 [pid 5192] <... chdir resumed>) = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5192] setpgid(0, 0) = 0 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5192] write(3, "1000", 4) = 4 [pid 5192] close(3) = 0 [pid 5192] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5192] memfd_create("syzkaller", 0) = 3 [pid 5189] <... ioctl resumed>) = 0 [pid 5186] <... open resumed>) = 4 [pid 5186] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5186] ftruncate(5, 33587195 [pid 5192] <... mmap resumed>) = 0x7f4da0c00000 [pid 5186] <... ftruncate resumed>) = 0 [pid 5186] sendfile(4, 5, NULL, 281474978811909 [pid 5192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5189] close(3) = 0 [pid 5189] close(4) = 0 [pid 5189] mkdir("./file1", 0777 [pid 5187] <... mount resumed>) = 0 [pid 5189] <... mkdir resumed>) = 0 [pid 5189] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5187] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5187] chdir("./file1") = 0 [pid 5187] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = -1 EBUSY (Device or resource busy) [ 59.841024][ T5189] loop4: detected capacity change from 0 to 4096 [ 59.862003][ T5193] NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5187] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5191] <... write resumed>) = 2097152 [pid 5187] <... open resumed>) = 4 [pid 5187] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5187] ftruncate(5, 33587195) = 0 [pid 5191] munmap(0x7f4da0c00000, 138412032 [pid 5187] sendfile(4, 5, NULL, 281474978811909 [pid 5191] <... munmap resumed>) = 0 [pid 5192] <... write resumed>) = 2097152 [pid 5191] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 59.896935][ T5189] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5191] ioctl(4, LOOP_SET_FD, 3 [pid 5192] munmap(0x7f4da0c00000, 138412032 [pid 5191] <... ioctl resumed>) = 0 [pid 5192] <... munmap resumed>) = 0 [pid 5192] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5192] ioctl(4, LOOP_SET_FD, 3 [pid 5189] <... mount resumed>) = 0 [pid 5192] <... ioctl resumed>) = 0 [pid 5191] close(3 [pid 5189] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5192] close(3 [pid 5189] <... openat resumed>) = 3 [pid 5189] chdir("./file1" [pid 5192] <... close resumed>) = 0 [pid 5189] <... chdir resumed>) = 0 [pid 5192] close(4 [pid 5191] <... close resumed>) = 0 [pid 5189] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5192] <... close resumed>) = 0 [pid 5192] mkdir("./file1", 0777 [pid 5191] close(4 [pid 5189] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5192] <... mkdir resumed>) = 0 [pid 5189] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5191] <... close resumed>) = 0 [pid 5191] mkdir("./file1", 0777) = 0 [pid 5191] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 59.938752][ T5189] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 59.952518][ T5191] loop3: detected capacity change from 0 to 4096 [ 59.954203][ T5194] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 59.963256][ T5192] loop1: detected capacity change from 0 to 4096 [pid 5192] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5189] <... open resumed>) = 4 [pid 5189] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5189] ftruncate(5, 33587195) = 0 [ 59.998715][ T5192] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 60.008521][ T5191] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 60.028217][ T5191] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5189] sendfile(4, 5, NULL, 281474978811909 [pid 5191] <... mount resumed>) = 0 [pid 5191] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5191] chdir("./file1") = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5185] <... sendfile resumed>) = 368640 [pid 5191] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5191] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5187] <... sendfile resumed>) = 368640 [pid 5187] unlink("./bus") = 0 [pid 5187] exit_group(0) = ? [pid 5187] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5185] unlink("./bus") = 0 [pid 5185] exit_group(0) = ? [pid 5185] +++ exited with 0 +++ [pid 5054] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5059] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5054] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5192] <... mount resumed>) = 0 [pid 5059] newfstatat(3, "", [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5192] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5192] chdir("./file1" [pid 5059] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5054] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5059] getdents64(3, [pid 5192] <... chdir resumed>) = 0 [pid 5059] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5054] <... openat resumed>) = 3 [pid 5192] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5059] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5192] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5059] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(3, "", [pid 5192] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5059] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5054] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5191] <... open resumed>) = 4 [pid 5059] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] getdents64(3, [pid 5191] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5059] unlink("./10/binderfs" [pid 5054] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5191] <... open resumed>) = 5 [pid 5059] <... unlink resumed>) = 0 [pid 5054] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5059] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5054] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5054] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5191] ftruncate(5, 33587195 [pid 5054] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5054] unlink("./10/binderfs") = 0 [pid 5054] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] <... ftruncate resumed>) = 0 [ 60.052334][ T5192] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 60.063984][ T5195] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 60.091227][ T5196] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5191] sendfile(4, 5, NULL, 281474978811909 [pid 5192] <... open resumed>) = 4 [pid 5192] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5192] ftruncate(5, 33587195) = 0 [pid 5192] sendfile(4, 5, NULL, 281474978811909 [pid 5186] <... sendfile resumed>) = 368640 [pid 5186] unlink("./bus") = 0 [pid 5186] exit_group(0) = ? [pid 5192] <... sendfile resumed>) = 368640 [pid 5186] +++ exited with 0 +++ [pid 5192] unlink("./bus" [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5192] <... unlink resumed>) = 0 [pid 5192] exit_group(0) = ? [pid 5056] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./10/binderfs") = 0 [pid 5056] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5192] +++ exited with 0 +++ [pid 5189] <... sendfile resumed>) = 368640 [pid 5189] unlink("./bus" [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5055] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5189] <... unlink resumed>) = 0 [pid 5055] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5191] <... sendfile resumed>) = 368640 [pid 5189] exit_group(0 [pid 5056] <... umount2 resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5191] unlink("./bus" [pid 5189] <... exit_group resumed>) = ? [pid 5056] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5056] newfstatat(AT_FDCWD, "./10/file1", [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./10/binderfs" [pid 5056] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... unlink resumed>) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", [pid 5055] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5191] <... unlink resumed>) = 0 [pid 5191] exit_group(0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5191] <... exit_group resumed>) = ? [pid 5056] getdents64(4, [pid 5189] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5058] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... openat resumed>) = 3 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5058] newfstatat(3, "", [pid 5056] rmdir("./10/file1" [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] getdents64(3, [pid 5058] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5056] close(3 [pid 5055] newfstatat(AT_FDCWD, "./10/file1", [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... close resumed>) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5191] +++ exited with 0 +++ [pid 5056] rmdir("./10" [pid 5055] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] unlink("./10/binderfs" [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... rmdir resumed>) = 0 [pid 5055] openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5056] mkdir("./11", 0777 [pid 5055] <... openat resumed>) = 4 [pid 5057] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... mkdir resumed>) = 0 [pid 5055] getdents64(4, [pid 5058] <... unlink resumed>) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, [pid 5058] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... openat resumed>) = 3 [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5055] close(4) = 0 [pid 5055] rmdir("./10/file1") = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] newfstatat(3, "", [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./10/binderfs", [pid 5058] newfstatat(AT_FDCWD, "./10/file1", [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] close(3) = 0 [pid 5058] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] unlink("./10/binderfs" [pid 5055] rmdir("./10" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... unlink resumed>) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5057] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(4, "", [pid 5055] mkdir("./11", 0777 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5058] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./10/file1" [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] <... rmdir resumed>) = 0 [pid 5055] <... openat resumed>) = 3 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5056] <... ioctl resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5058] rmdir("./10") = 0 [pid 5058] mkdir("./11", 0777 [pid 5057] <... umount2 resumed>) = 0 [pid 5056] close(3 [pid 5058] <... mkdir resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] newfstatat(AT_FDCWD, "./10/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./10/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./10/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 ./strace-static-x86_64: Process 5198 attached [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./10/file1" [pid 5198] set_robust_list(0x55555695e660, 24 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5198 [pid 5055] <... ioctl resumed>) = 0 [pid 5198] <... set_robust_list resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5055] close(3 [pid 5198] chdir("./11" [pid 5057] getdents64(3, [pid 5198] <... chdir resumed>) = 0 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5198] <... prctl resumed>) = 0 [pid 5057] close(3 [pid 5198] setpgid(0, 0 [pid 5058] close(3 [pid 5057] <... close resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5198] <... setpgid resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5200 attached ./strace-static-x86_64: Process 5199 attached [pid 5057] rmdir("./10" [pid 5200] set_robust_list(0x55555695e660, 24 [pid 5199] set_robust_list(0x55555695e660, 24 [pid 5200] <... set_robust_list resumed>) = 0 [pid 5199] <... set_robust_list resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5200 [pid 5199] chdir("./11" [pid 5057] <... rmdir resumed>) = 0 [pid 5200] chdir("./11" [pid 5198] <... openat resumed>) = 3 [pid 5057] mkdir("./11", 0777 [pid 5200] <... chdir resumed>) = 0 [pid 5198] write(3, "1000", 4 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] <... write resumed>) = 4 [pid 5200] <... prctl resumed>) = 0 [pid 5198] close(3 [pid 5200] setpgid(0, 0 [pid 5199] <... chdir resumed>) = 0 [pid 5198] <... close resumed>) = 0 [pid 5200] <... setpgid resumed>) = 0 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5198] symlink("/dev/binderfs", "./binderfs" [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5199 [pid 5199] <... prctl resumed>) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5199] setpgid(0, 0 [pid 5198] <... symlink resumed>) = 0 [pid 5057] <... mkdir resumed>) = 0 [pid 5200] write(3, "1000", 4 [pid 5199] <... setpgid resumed>) = 0 [pid 5198] memfd_create("syzkaller", 0 [pid 5200] <... write resumed>) = 4 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5198] <... memfd_create resumed>) = 3 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5200] close(3 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... openat resumed>) = 3 [pid 5200] <... close resumed>) = 0 [pid 5199] <... openat resumed>) = 3 [pid 5198] <... mmap resumed>) = 0x7f4da0c00000 [pid 5200] symlink("/dev/binderfs", "./binderfs" [pid 5199] write(3, "1000", 4 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5200] <... symlink resumed>) = 0 [pid 5199] <... write resumed>) = 4 [pid 5199] close(3 [pid 5200] memfd_create("syzkaller", 0 [pid 5199] <... close resumed>) = 0 [pid 5199] symlink("/dev/binderfs", "./binderfs" [pid 5200] <... memfd_create resumed>) = 3 [pid 5199] <... symlink resumed>) = 0 [pid 5199] memfd_create("syzkaller", 0 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5200] <... mmap resumed>) = 0x7f4da0c00000 [pid 5199] <... memfd_create resumed>) = 3 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5198] <... write resumed>) = 2097152 [pid 5198] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5057] <... ioctl resumed>) = 0 [pid 5198] <... openat resumed>) = 4 [pid 5198] ioctl(4, LOOP_SET_FD, 3 [pid 5199] <... write resumed>) = 2097152 [pid 5200] <... write resumed>) = 2097152 [pid 5057] close(3 [pid 5199] munmap(0x7f4da0c00000, 138412032 [pid 5057] <... close resumed>) = 0 [pid 5199] <... munmap resumed>) = 0 [pid 5200] munmap(0x7f4da0c00000, 138412032 [pid 5198] <... ioctl resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5201 attached [pid 5198] close(3 [pid 5201] set_robust_list(0x55555695e660, 24 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5201 [pid 5201] <... set_robust_list resumed>) = 0 [pid 5201] chdir("./11") = 0 [pid 5198] <... close resumed>) = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5200] <... munmap resumed>) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5198] close(4 [pid 5201] <... prctl resumed>) = 0 [pid 5201] setpgid(0, 0 [pid 5200] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5199] <... openat resumed>) = 4 [pid 5198] <... close resumed>) = 0 [pid 5201] <... setpgid resumed>) = 0 [pid 5200] <... openat resumed>) = 4 [pid 5199] ioctl(4, LOOP_SET_FD, 3 [pid 5198] mkdir("./file1", 0777 [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5200] ioctl(4, LOOP_SET_FD, 3 [pid 5198] <... mkdir resumed>) = 0 [pid 5201] <... openat resumed>) = 3 [pid 5199] <... ioctl resumed>) = 0 [pid 5201] write(3, "1000", 4) = 4 [pid 5198] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5199] close(3 [pid 5201] close(3) = 0 [pid 5200] <... ioctl resumed>) = 0 [pid 5199] <... close resumed>) = 0 [pid 5201] symlink("/dev/binderfs", "./binderfs" [pid 5200] close(3 [ 60.486497][ T5198] loop2: detected capacity change from 0 to 4096 [ 60.515782][ T5199] loop1: detected capacity change from 0 to 4096 [ 60.515807][ T5200] loop4: detected capacity change from 0 to 4096 [pid 5199] close(4 [pid 5201] <... symlink resumed>) = 0 [pid 5200] <... close resumed>) = 0 [pid 5199] <... close resumed>) = 0 [pid 5199] mkdir("./file1", 0777 [pid 5201] memfd_create("syzkaller", 0 [pid 5199] <... mkdir resumed>) = 0 [pid 5200] close(4 [pid 5201] <... memfd_create resumed>) = 3 [pid 5200] <... close resumed>) = 0 [pid 5199] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5200] mkdir("./file1", 0777 [pid 5201] <... mmap resumed>) = 0x7f4da0c00000 [pid 5200] <... mkdir resumed>) = 0 [ 60.530720][ T5198] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 60.541974][ T5198] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 60.555171][ T5199] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 60.568788][ T5200] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5200] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5198] <... mount resumed>) = 0 [pid 5198] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5198] chdir("./file1") = 0 [pid 5198] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [ 60.569348][ T5199] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 60.585382][ T5202] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 60.603032][ T5200] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 60.621593][ T5203] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5198] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5201] <... write resumed>) = 2097152 [pid 5199] <... mount resumed>) = 0 [pid 5199] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5199] chdir("./file1") = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5199] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5199] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5199] ftruncate(5, 33587195) = 0 [pid 5199] sendfile(4, 5, NULL, 281474978811909 [pid 5200] <... mount resumed>) = 0 [pid 5201] munmap(0x7f4da0c00000, 138412032 [pid 5198] <... open resumed>) = 4 [pid 5200] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5200] chdir("./file1") = 0 [pid 5200] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5201] <... munmap resumed>) = 0 [pid 5198] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5201] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5200] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5201] ioctl(4, LOOP_SET_FD, 3 [pid 5200] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5198] <... open resumed>) = 5 [pid 5201] <... ioctl resumed>) = 0 [pid 5200] <... open resumed>) = 4 [pid 5198] ftruncate(5, 33587195 [pid 5201] close(3) = 0 [pid 5200] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5198] <... ftruncate resumed>) = 0 [pid 5201] close(4 [pid 5200] <... open resumed>) = 5 [pid 5198] sendfile(4, 5, NULL, 281474978811909 [pid 5200] ftruncate(5, 33587195 [pid 5201] <... close resumed>) = 0 [pid 5200] <... ftruncate resumed>) = 0 [pid 5200] sendfile(4, 5, NULL, 281474978811909 [pid 5201] mkdir("./file1", 0777) = 0 [ 60.623067][ T5204] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 60.663396][ T5201] loop3: detected capacity change from 0 to 4096 [pid 5201] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5199] <... sendfile resumed>) = 368640 [pid 5199] unlink("./bus") = 0 [pid 5199] exit_group(0) = ? [pid 5199] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5055] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5198] <... sendfile resumed>) = 368640 [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5198] unlink("./bus" [pid 5055] unlink("./11/binderfs") = 0 [pid 5055] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5198] <... unlink resumed>) = 0 [pid 5198] exit_group(0) = ? [pid 5198] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [ 60.707962][ T5201] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 60.733677][ T5201] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5201] <... mount resumed>) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5201] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5201] chdir("./file1" [pid 5055] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] <... chdir resumed>) = 0 [pid 5201] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5201] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./11/file1", [pid 5056] newfstatat(3, "", [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] getdents64(3, [pid 5055] <... openat resumed>) = 4 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] newfstatat(4, "", [pid 5056] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] newfstatat(AT_FDCWD, "./11/binderfs", [pid 5055] getdents64(4, [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] unlink("./11/binderfs" [pid 5055] getdents64(4, [pid 5056] <... unlink resumed>) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4) = 0 [pid 5055] rmdir("./11/file1") = 0 [pid 5055] getdents64(3, [pid 5201] <... open resumed>) = 4 [pid 5056] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5201] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5201] ftruncate(5, 33587195 [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 [pid 5055] rmdir("./11") = 0 [pid 5201] <... ftruncate resumed>) = 0 [pid 5200] <... sendfile resumed>) = 368640 [pid 5056] <... umount2 resumed>) = 0 [pid 5201] sendfile(4, 5, NULL, 281474978811909 [pid 5055] mkdir("./12", 0777 [pid 5200] unlink("./bus" [pid 5056] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] <... mkdir resumed>) = 0 [pid 5056] newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] newfstatat(4, "", [pid 5055] <... openat resumed>) = 3 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, [pid 5200] <... unlink resumed>) = 0 [ 60.787930][ T5205] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5200] exit_group(0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5200] <... exit_group resumed>) = ? [pid 5056] close(4) = 0 [pid 5056] rmdir("./11/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5200] +++ exited with 0 +++ [pid 5056] rmdir("./11" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5058] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] mkdir("./12", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5058] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] unlink("./11/binderfs") = 0 [pid 5058] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... ioctl resumed>) = 0 [pid 5055] close(3) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5206 attached [pid 5058] <... umount2 resumed>) = 0 [pid 5206] set_robust_list(0x55555695e660, 24 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5206 [pid 5206] <... set_robust_list resumed>) = 0 [pid 5058] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5206] chdir("./12" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5206] <... chdir resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./11/file1", [pid 5056] <... ioctl resumed>) = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5206] <... prctl resumed>) = 0 [pid 5058] getdents64(4, [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] getdents64(4, [pid 5056] close(3 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] <... close resumed>) = 0 [pid 5206] <... openat resumed>) = 3 [pid 5058] close(4 [pid 5206] write(3, "1000", 4 [pid 5058] <... close resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5206] <... write resumed>) = 4 [pid 5058] rmdir("./11/file1" [pid 5206] close(3 [pid 5058] <... rmdir resumed>) = 0 [pid 5206] <... close resumed>) = 0 [pid 5206] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 ./strace-static-x86_64: Process 5207 attached [pid 5206] memfd_create("syzkaller", 0 [pid 5058] rmdir("./11" [pid 5206] <... memfd_create resumed>) = 3 [pid 5207] set_robust_list(0x55555695e660, 24 [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5207] <... set_robust_list resumed>) = 0 [pid 5206] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5207 [pid 5058] mkdir("./12", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5207] chdir("./12" [pid 5206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5207] <... chdir resumed>) = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5207] write(3, "1000", 4) = 4 [pid 5207] close(3) = 0 [pid 5207] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5207] memfd_create("syzkaller", 0) = 3 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5206] <... write resumed>) = 2097152 [pid 5207] <... write resumed>) = 2097152 [pid 5206] munmap(0x7f4da0c00000, 138412032 [pid 5207] munmap(0x7f4da0c00000, 138412032 [pid 5206] <... munmap resumed>) = 0 [pid 5201] <... sendfile resumed>) = 368640 [pid 5207] <... munmap resumed>) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5201] unlink("./bus" [pid 5206] <... openat resumed>) = 4 [pid 5206] ioctl(4, LOOP_SET_FD, 3 [pid 5207] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5207] ioctl(4, LOOP_SET_FD, 3 [pid 5206] <... ioctl resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5201] <... unlink resumed>) = 0 ./strace-static-x86_64: Process 5208 attached [pid 5207] <... ioctl resumed>) = 0 [pid 5206] close(3 [pid 5201] exit_group(0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5208 [pid 5208] set_robust_list(0x55555695e660, 24 [pid 5206] <... close resumed>) = 0 [pid 5201] <... exit_group resumed>) = ? [pid 5207] close(3) = 0 [pid 5207] close(4) = 0 [pid 5207] mkdir("./file1", 0777 [pid 5208] <... set_robust_list resumed>) = 0 [pid 5206] close(4 [pid 5208] chdir("./12" [pid 5207] <... mkdir resumed>) = 0 [pid 5201] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5208] <... chdir resumed>) = 0 [pid 5206] <... close resumed>) = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5206] mkdir("./file1", 0777) = 0 [pid 5208] <... prctl resumed>) = 0 [pid 5208] setpgid(0, 0 [pid 5207] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5206] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5208] <... setpgid resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] unlink("./11/binderfs") = 0 [pid 5208] <... openat resumed>) = 3 [pid 5208] write(3, "1000", 4 [pid 5057] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5208] <... write resumed>) = 4 [pid 5208] close(3) = 0 [pid 5208] symlink("/dev/binderfs", "./binderfs") = 0 [ 60.983180][ T5206] loop1: detected capacity change from 0 to 4096 [ 60.984558][ T5207] loop2: detected capacity change from 0 to 4096 [pid 5208] memfd_create("syzkaller", 0) = 3 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] <... umount2 resumed>) = 0 [pid 5057] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 61.040544][ T5206] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.051368][ T5207] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.073593][ T5207] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5057] newfstatat(AT_FDCWD, "./11/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./11/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./11/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4) = 0 [pid 5057] rmdir("./11/file1") = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./11") = 0 [pid 5057] mkdir("./12", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5208] <... write resumed>) = 2097152 [pid 5208] munmap(0x7f4da0c00000, 138412032 [pid 5207] <... mount resumed>) = 0 [pid 5206] <... mount resumed>) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5206] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5206] chdir("./file1") = 0 [pid 5208] <... munmap resumed>) = 0 [pid 5207] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5207] <... openat resumed>) = 3 [pid 5206] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5207] chdir("./file1") = 0 [pid 5206] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5207] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5208] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5207] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5207] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5208] <... openat resumed>) = 4 [pid 5206] <... open resumed>) = 4 [pid 5208] ioctl(4, LOOP_SET_FD, 3 [ 61.073767][ T5206] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 61.104058][ T5209] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 61.112219][ T5210] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5206] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5208] <... ioctl resumed>) = 0 [pid 5207] <... open resumed>) = 4 [pid 5206] ftruncate(5, 33587195 [pid 5208] close(3) = 0 [pid 5207] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5206] <... ftruncate resumed>) = 0 [pid 5208] close(4 [pid 5207] <... open resumed>) = 5 [pid 5206] sendfile(4, 5, NULL, 281474978811909 [pid 5207] ftruncate(5, 33587195 [pid 5208] <... close resumed>) = 0 [pid 5208] mkdir("./file1", 0777 [pid 5207] <... ftruncate resumed>) = 0 [pid 5208] <... mkdir resumed>) = 0 [pid 5207] sendfile(4, 5, NULL, 281474978811909 [ 61.150399][ T5208] loop4: detected capacity change from 0 to 4096 [pid 5208] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] <... ioctl resumed>) = 0 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555695e650) = 5211 ./strace-static-x86_64: Process 5211 attached [pid 5211] set_robust_list(0x55555695e660, 24) = 0 [pid 5211] chdir("./12") = 0 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5211] setpgid(0, 0) = 0 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] write(3, "1000", 4) = 4 [pid 5211] close(3) = 0 [pid 5211] symlink("/dev/binderfs", "./binderfs") = 0 [ 61.195014][ T5208] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.208668][ T5208] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5211] memfd_create("syzkaller", 0) = 3 [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5208] <... mount resumed>) = 0 [pid 5211] <... mmap resumed>) = 0x7f4da0c00000 [pid 5208] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5208] chdir("./file1") = 0 [pid 5208] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5208] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5208] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5208] ftruncate(5, 33587195) = 0 [pid 5208] sendfile(4, 5, NULL, 281474978811909 [ 61.242026][ T5212] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5211] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5211] ioctl(4, LOOP_SET_FD, 3 [pid 5207] <... sendfile resumed>) = 368640 [pid 5206] <... sendfile resumed>) = 368640 [pid 5207] unlink("./bus" [pid 5206] unlink("./bus" [pid 5211] <... ioctl resumed>) = 0 [pid 5211] close(3 [pid 5206] <... unlink resumed>) = 0 [pid 5211] <... close resumed>) = 0 [pid 5207] <... unlink resumed>) = 0 [pid 5206] exit_group(0 [pid 5211] close(4 [pid 5207] exit_group(0) = ? [pid 5211] <... close resumed>) = 0 [pid 5206] <... exit_group resumed>) = ? [pid 5211] mkdir("./file1", 0777) = 0 [pid 5211] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5206] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5055] restart_syscall(<... resuming interrupted clone ...>) = 0 [ 61.336563][ T5211] loop3: detected capacity change from 0 to 4096 [ 61.369802][ T5211] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5055] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5208] <... sendfile resumed>) = 368640 [pid 5207] +++ exited with 0 +++ [pid 5208] unlink("./bus" [pid 5055] newfstatat(3, "", [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5208] <... unlink resumed>) = 0 [pid 5208] exit_group(0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5208] <... exit_group resumed>) = ? [pid 5055] getdents64(3, [pid 5056] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... mount resumed>) = 0 [pid 5211] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5211] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5211] chdir("./file1" [pid 5056] newfstatat(3, "", [pid 5055] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5211] <... chdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5211] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5056] getdents64(3, [pid 5055] unlink("./12/binderfs" [pid 5211] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5208] +++ exited with 0 +++ [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] <... unlink resumed>) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5056] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... open resumed>) = 4 [pid 5211] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... umount2 resumed>) = 0 [pid 5211] <... open resumed>) = 5 [pid 5058] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5055] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5211] ftruncate(5, 33587195 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] unlink("./12/binderfs" [pid 5055] newfstatat(AT_FDCWD, "./12/file1", [pid 5211] <... ftruncate resumed>) = 0 [pid 5058] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... unlink resumed>) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5211] sendfile(4, 5, NULL, 281474978811909 [pid 5058] <... openat resumed>) = 3 [pid 5058] newfstatat(3, "", [pid 5056] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... umount2 resumed>) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] getdents64(4, [pid 5058] newfstatat(AT_FDCWD, "./12/binderfs", [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] getdents64(4, [pid 5058] unlink("./12/binderfs" [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... unlink resumed>) = 0 [ 61.385177][ T5211] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 61.400396][ T5213] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5055] close(4 [pid 5058] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... close resumed>) = 0 [pid 5055] rmdir("./12/file1") = 0 [pid 5055] getdents64(3, [pid 5056] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] close(3) = 0 [pid 5055] rmdir("./12") = 0 [pid 5055] mkdir("./13", 0777 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5056] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5056] <... openat resumed>) = 4 [pid 5055] <... openat resumed>) = 3 [pid 5056] newfstatat(4, "", [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./12/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./12") = 0 [pid 5056] mkdir("./13", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] <... umount2 resumed>) = 0 [pid 5058] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./12/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5211] <... sendfile resumed>) = 368640 [pid 5211] unlink("./bus" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5211] <... unlink resumed>) = 0 [pid 5058] getdents64(4, [pid 5211] exit_group(0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5211] <... exit_group resumed>) = ? [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./12/file1") = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./12") = 0 [pid 5211] +++ exited with 0 +++ [pid 5058] mkdir("./13", 0777) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5057] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./12/binderfs") = 0 [pid 5057] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5057] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] close(3 [pid 5055] close(3 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... close resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5057] newfstatat(AT_FDCWD, "./12/file1", [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./12/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./12/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", ./strace-static-x86_64: Process 5215 attached ./strace-static-x86_64: Process 5214 attached [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5214 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5215 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, [pid 5214] set_robust_list(0x55555695e660, 24 [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5215] set_robust_list(0x55555695e660, 24 [pid 5214] <... set_robust_list resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5214] chdir("./13") = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0) = 0 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5214] write(3, "1000", 4) = 4 [pid 5214] close(3) = 0 [pid 5214] symlink("/dev/binderfs", "./binderfs" [pid 5215] <... set_robust_list resumed>) = 0 [pid 5214] <... symlink resumed>) = 0 [pid 5214] memfd_create("syzkaller", 0) = 3 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5215] chdir("./13") = 0 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] rmdir("./12/file1" [pid 5215] setpgid(0, 0) = 0 [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5058] close(3 [pid 5215] write(3, "1000", 4 [pid 5058] <... close resumed>) = 0 [pid 5215] <... write resumed>) = 4 [pid 5215] close(3 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5215] <... close resumed>) = 0 ./strace-static-x86_64: Process 5216 attached [pid 5215] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5216 [pid 5216] set_robust_list(0x55555695e660, 24) = 0 [pid 5216] chdir("./13") = 0 [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5215] <... symlink resumed>) = 0 [pid 5214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5215] memfd_create("syzkaller", 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./12") = 0 [pid 5057] mkdir("./13", 0777) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5216] <... prctl resumed>) = 0 [pid 5215] <... memfd_create resumed>) = 3 [pid 5216] setpgid(0, 0 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5216] <... setpgid resumed>) = 0 [pid 5215] <... mmap resumed>) = 0x7f4da0c00000 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5215] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5216] <... openat resumed>) = 3 [pid 5216] write(3, "1000", 4 [pid 5214] <... write resumed>) = 2097152 [pid 5216] <... write resumed>) = 4 [pid 5216] close(3 [pid 5214] munmap(0x7f4da0c00000, 138412032 [pid 5216] <... close resumed>) = 0 [pid 5216] symlink("/dev/binderfs", "./binderfs" [pid 5214] <... munmap resumed>) = 0 [pid 5216] <... symlink resumed>) = 0 [pid 5215] <... write resumed>) = 2097152 [pid 5214] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5215] munmap(0x7f4da0c00000, 138412032 [pid 5214] <... openat resumed>) = 4 [pid 5216] memfd_create("syzkaller", 0) = 3 [pid 5214] ioctl(4, LOOP_SET_FD, 3 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5215] <... munmap resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5215] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5216] <... write resumed>) = 2097152 [pid 5215] close(3 [pid 5214] <... ioctl resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5216] munmap(0x7f4da0c00000, 138412032 [pid 5215] <... close resumed>) = 0 [pid 5215] close(4 [pid 5216] <... munmap resumed>) = 0 [pid 5215] <... close resumed>) = 0 [pid 5214] close(3 [pid 5057] close(3 [pid 5215] mkdir("./file1", 0777 [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5215] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5217 attached [pid 5216] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5214] <... close resumed>) = 0 [pid 5215] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5217 [pid 5217] set_robust_list(0x55555695e660, 24 [pid 5214] close(4 [pid 5216] <... openat resumed>) = 4 [pid 5217] <... set_robust_list resumed>) = 0 [pid 5214] <... close resumed>) = 0 [pid 5217] chdir("./13" [pid 5214] mkdir("./file1", 0777 [pid 5217] <... chdir resumed>) = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5217] setpgid(0, 0) = 0 [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5214] <... mkdir resumed>) = 0 [ 61.616650][ T5214] loop2: detected capacity change from 0 to 4096 [ 61.631412][ T5215] loop1: detected capacity change from 0 to 4096 [pid 5217] <... openat resumed>) = 3 [pid 5216] ioctl(4, LOOP_SET_FD, 3 [pid 5214] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5217] write(3, "1000", 4) = 4 [pid 5217] close(3) = 0 [pid 5217] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5217] memfd_create("syzkaller", 0) = 3 [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5217] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5216] <... ioctl resumed>) = 0 [ 61.670186][ T5215] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.691032][ T5216] loop4: detected capacity change from 0 to 4096 [ 61.698484][ T5214] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.698491][ T5215] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5216] close(3 [pid 5217] <... write resumed>) = 2097152 [pid 5217] munmap(0x7f4da0c00000, 138412032 [pid 5215] <... mount resumed>) = 0 [pid 5215] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5217] <... munmap resumed>) = 0 [pid 5215] <... openat resumed>) = 3 [pid 5217] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5215] chdir("./file1") = 0 [pid 5215] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5215] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5216] <... close resumed>) = 0 [pid 5217] <... openat resumed>) = 4 [pid 5215] <... open resumed>) = 4 [pid 5214] <... mount resumed>) = 0 [pid 5217] ioctl(4, LOOP_SET_FD, 3 [pid 5216] close(4 [pid 5215] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5214] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5216] <... close resumed>) = 0 [pid 5214] <... openat resumed>) = 3 [pid 5216] mkdir("./file1", 0777 [pid 5215] <... open resumed>) = 5 [pid 5214] chdir("./file1") = 0 [pid 5217] <... ioctl resumed>) = 0 [pid 5216] <... mkdir resumed>) = 0 [pid 5215] ftruncate(5, 33587195 [pid 5214] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5217] close(3 [pid 5214] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5217] <... close resumed>) = 0 [pid 5214] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5217] close(4 [pid 5216] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5215] <... ftruncate resumed>) = 0 [pid 5217] <... close resumed>) = 0 [pid 5215] sendfile(4, 5, NULL, 281474978811909 [pid 5217] mkdir("./file1", 0777) = 0 [ 61.703689][ T5218] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 61.723796][ T5214] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 61.747895][ T5219] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 61.759011][ T5217] loop3: detected capacity change from 0 to 4096 [pid 5217] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5214] <... open resumed>) = 4 [pid 5214] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5214] ftruncate(5, 33587195) = 0 [ 61.783798][ T5216] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.797089][ T5217] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 61.809306][ T5216] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5214] sendfile(4, 5, NULL, 281474978811909 [pid 5216] <... mount resumed>) = 0 [pid 5216] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5216] chdir("./file1") = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5216] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5216] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5216] ftruncate(5, 33587195) = 0 [ 61.829951][ T5220] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 61.848005][ T5217] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5216] sendfile(4, 5, NULL, 281474978811909 [pid 5217] <... mount resumed>) = 0 [pid 5217] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5217] chdir("./file1") = 0 [pid 5217] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5217] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5217] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5215] <... sendfile resumed>) = 368640 [pid 5217] ftruncate(5, 33587195 [pid 5215] unlink("./bus" [pid 5217] <... ftruncate resumed>) = 0 [pid 5217] sendfile(4, 5, NULL, 281474978811909 [pid 5215] <... unlink resumed>) = 0 [pid 5215] exit_group(0) = ? [ 61.892390][ T5221] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 61.904750][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop3 [pid 5215] +++ exited with 0 +++ [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5055] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./13/binderfs") = 0 [pid 5055] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5216] <... sendfile resumed>) = 368640 [pid 5214] <... sendfile resumed>) = 368640 [pid 5216] unlink("./bus" [pid 5214] unlink("./bus" [pid 5055] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5216] <... unlink resumed>) = 0 [pid 5214] <... unlink resumed>) = 0 [pid 5216] exit_group(0) = ? [pid 5214] exit_group(0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5214] <... exit_group resumed>) = ? [pid 5055] openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5055] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] close(4) = 0 [pid 5055] rmdir("./13/file1") = 0 [pid 5055] getdents64(3, [pid 5217] <... sendfile resumed>) = 368640 [pid 5216] +++ exited with 0 +++ [pid 5214] +++ exited with 0 +++ [pid 5217] unlink("./bus" [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5058] <... openat resumed>) = 3 [pid 5056] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] <... close resumed>) = 0 [pid 5056] <... openat resumed>) = 3 [pid 5217] <... unlink resumed>) = 0 [pid 5058] newfstatat(3, "", [pid 5056] newfstatat(3, "", [pid 5055] rmdir("./13" [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5217] exit_group(0 [pid 5056] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5217] <... exit_group resumed>) = ? [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./13/binderfs") = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5056] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] mkdir("./14", 0777 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5058] unlink("./13/binderfs" [pid 5056] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5217] +++ exited with 0 +++ [pid 5058] <... unlink resumed>) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5058] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... openat resumed>) = 3 [pid 5056] newfstatat(AT_FDCWD, "./13/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... openat resumed>) = 4 [pid 5057] <... openat resumed>) = 3 [pid 5056] newfstatat(4, "", [pid 5057] newfstatat(3, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, [pid 5058] <... umount2 resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] getdents64(4, [pid 5057] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] newfstatat(AT_FDCWD, "./13/file1", [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./13/binderfs", [pid 5056] close(4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] unlink("./13/binderfs" [pid 5058] <... openat resumed>) = 4 [pid 5057] <... unlink resumed>) = 0 [pid 5058] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5056] rmdir("./13/file1" [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... rmdir resumed>) = 0 [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./13/file1" [pid 5056] getdents64(3, [pid 5058] <... rmdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./13") = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./13") = 0 [pid 5056] mkdir("./14", 0777) = 0 [pid 5058] mkdir("./14", 0777 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... ioctl resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5057] newfstatat(AT_FDCWD, "./13/file1", [pid 5055] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./13/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./13/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5057] newfstatat(4, "", [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(4, ./strace-static-x86_64: Process 5222 attached 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5222] set_robust_list(0x55555695e660, 24 [pid 5057] close(4) = 0 [pid 5222] <... set_robust_list resumed>) = 0 [pid 5057] rmdir("./13/file1" [pid 5222] chdir("./14") = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5222] setpgid(0, 0) = 0 [pid 5057] getdents64(3, [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5222 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... ioctl resumed>) = 0 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] <... ioctl resumed>) = 0 [pid 5056] close(3) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3 [pid 5222] <... openat resumed>) = 3 [pid 5057] <... close resumed>) = 0 [pid 5057] rmdir("./13"./strace-static-x86_64: Process 5223 attached ) = 0 [pid 5222] write(3, "1000", 4 [pid 5223] set_robust_list(0x55555695e660, 24 [pid 5057] mkdir("./14", 0777 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5223 [pid 5223] <... set_robust_list resumed>) = 0 [pid 5223] chdir("./14" [pid 5222] <... write resumed>) = 4 [pid 5058] close(3 [pid 5057] <... mkdir resumed>) = 0 [pid 5223] <... chdir resumed>) = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5222] close(3 [pid 5058] <... close resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5222] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... openat resumed>) = 3 [pid 5222] symlink("/dev/binderfs", "./binderfs" [pid 5057] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5224 attached [pid 5223] <... prctl resumed>) = 0 [pid 5222] <... symlink resumed>) = 0 [pid 5224] set_robust_list(0x55555695e660, 24 [pid 5223] setpgid(0, 0 [pid 5222] memfd_create("syzkaller", 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5224 [pid 5223] <... setpgid resumed>) = 0 [pid 5222] <... memfd_create resumed>) = 3 [pid 5224] <... set_robust_list resumed>) = 0 [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5224] chdir("./14" [pid 5223] <... openat resumed>) = 3 [pid 5222] <... mmap resumed>) = 0x7f4da0c00000 [pid 5224] <... chdir resumed>) = 0 [pid 5223] write(3, "1000", 4 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] <... write resumed>) = 4 [pid 5223] close(3 [pid 5224] memfd_create("syzkaller", 0 [pid 5223] <... close resumed>) = 0 [pid 5224] <... memfd_create resumed>) = 3 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5223] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] memfd_create("syzkaller", 0) = 3 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5057] <... ioctl resumed>) = 0 [pid 5222] munmap(0x7f4da0c00000, 138412032 [pid 5057] close(3) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5225 attached , child_tidptr=0x55555695e650) = 5225 [pid 5225] set_robust_list(0x55555695e660, 24) = 0 [pid 5225] chdir("./14") = 0 [pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5225] setpgid(0, 0) = 0 [pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] <... write resumed>) = 2097152 [pid 5223] <... write resumed>) = 2097152 [pid 5222] <... munmap resumed>) = 0 [pid 5225] write(3, "1000", 4) = 4 [pid 5225] close(3) = 0 [pid 5225] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5223] munmap(0x7f4da0c00000, 138412032 [pid 5225] memfd_create("syzkaller", 0 [pid 5224] munmap(0x7f4da0c00000, 138412032 [pid 5222] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5225] <... memfd_create resumed>) = 3 [pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5223] <... munmap resumed>) = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5222] <... openat resumed>) = 4 [pid 5223] ioctl(4, LOOP_SET_FD, 3 [pid 5224] <... munmap resumed>) = 0 [pid 5222] ioctl(4, LOOP_SET_FD, 3 [pid 5223] <... ioctl resumed>) = 0 [pid 5225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5224] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5222] <... ioctl resumed>) = 0 [pid 5223] close(3 [pid 5222] close(3) = 0 [pid 5222] close(4 [pid 5224] <... openat resumed>) = 4 [pid 5222] <... close resumed>) = 0 [pid 5223] <... close resumed>) = 0 [pid 5222] mkdir("./file1", 0777 [pid 5224] ioctl(4, LOOP_SET_FD, 3 [pid 5223] close(4 [pid 5222] <... mkdir resumed>) = 0 [pid 5223] <... close resumed>) = 0 [pid 5222] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5224] <... ioctl resumed>) = 0 [pid 5223] mkdir("./file1", 0777) = 0 [ 62.263279][ T5223] loop2: detected capacity change from 0 to 4096 [ 62.270276][ T5222] loop1: detected capacity change from 0 to 4096 [ 62.290389][ T5224] loop4: detected capacity change from 0 to 4096 [ 62.297963][ T5222] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5223] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5224] close(3 [pid 5225] <... write resumed>) = 2097152 [pid 5225] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5225] ioctl(4, LOOP_SET_FD, 3 [pid 5224] <... close resumed>) = 0 [ 62.298865][ T5223] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 62.318833][ T5222] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.329273][ T5223] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.332198][ T5225] loop3: detected capacity change from 0 to 4096 [ 62.348628][ T5224] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5224] close(4 [pid 5225] <... ioctl resumed>) = 0 [pid 5224] <... close resumed>) = 0 [pid 5225] close(3 [pid 5224] mkdir("./file1", 0777 [pid 5225] <... close resumed>) = 0 [pid 5225] close(4) = 0 [pid 5225] mkdir("./file1", 0777) = 0 [pid 5224] <... mkdir resumed>) = 0 [pid 5224] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 62.349662][ T5225] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 62.372508][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop2 [ 62.380197][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop1 [ 62.387896][ T5225] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.400503][ T5224] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5225] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "") = 0 [pid 5225] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5225] chdir("./file1") = 0 [pid 5225] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5225] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000) = 4 [pid 5225] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5225] ftruncate(5, 33587195) = 0 [pid 5225] sendfile(4, 5, NULL, 281474978811909 [pid 5222] <... mount resumed>) = 0 [pid 5222] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5222] chdir("./file1") = 0 [ 62.401788][ T5068] udevd[5068]: incorrect nilfs2 checksum on /dev/loop4 [ 62.418767][ T5227] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 62.422627][ T5228] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 62.432286][ T5226] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5222] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5223] <... mount resumed>) = 0 [pid 5222] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5223] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5222] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5223] <... openat resumed>) = 3 [pid 5224] <... mount resumed>) = 0 [pid 5223] chdir("./file1" [pid 5224] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5223] <... chdir resumed>) = 0 [pid 5224] chdir("./file1") = 0 [pid 5224] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5223] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5224] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5223] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5222] <... open resumed>) = 4 [pid 5223] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5222] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5222] ftruncate(5, 33587195) = 0 [pid 5222] sendfile(4, 5, NULL, 281474978811909 [pid 5224] <... open resumed>) = 4 [pid 5223] <... open resumed>) = 4 [pid 5223] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5224] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5223] <... open resumed>) = 5 [pid 5224] ftruncate(5, 33587195 [pid 5223] ftruncate(5, 33587195) = 0 [pid 5223] sendfile(4, 5, NULL, 281474978811909 [pid 5224] <... ftruncate resumed>) = 0 [ 62.455576][ T5229] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5224] sendfile(4, 5, NULL, 281474978811909 [pid 5225] <... sendfile resumed>) = 368640 [pid 5225] unlink("./bus") = 0 [pid 5225] exit_group(0) = ? [pid 5224] <... sendfile resumed>) = 368640 [pid 5224] unlink("./bus") = 0 [pid 5224] exit_group(0) = ? [pid 5222] <... sendfile resumed>) = 368640 [pid 5222] unlink("./bus" [pid 5225] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5057] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./14/binderfs") = 0 [pid 5057] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5222] <... unlink resumed>) = 0 [pid 5222] exit_group(0 [pid 5057] <... umount2 resumed>) = 0 [pid 5222] <... exit_group resumed>) = ? [pid 5057] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./14/file1", [pid 5224] +++ exited with 0 +++ [pid 5223] <... sendfile resumed>) = 368640 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5223] unlink("./bus" [pid 5057] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5223] <... unlink resumed>) = 0 [pid 5222] +++ exited with 0 +++ [pid 5058] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5223] exit_group(0) = ? [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... openat resumed>) = 4 [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} --- [pid 5058] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5055] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... openat resumed>) = 3 [pid 5057] newfstatat(4, "", [pid 5058] newfstatat(3, "", [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5058] getdents64(3, [pid 5057] getdents64(4, [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] unlink("./14/binderfs" [pid 5058] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, [pid 5055] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5057] close(4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... close resumed>) = 0 [pid 5058] unlink("./14/binderfs" [pid 5057] rmdir("./14/file1" [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5058] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(3, [pid 5223] +++ exited with 0 +++ [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5223, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5055] <... umount2 resumed>) = 0 [pid 5057] close(3) = 0 [pid 5055] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] rmdir("./14" [pid 5055] newfstatat(AT_FDCWD, "./14/file1", [pid 5057] <... rmdir resumed>) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] mkdir("./15", 0777 [pid 5055] <... openat resumed>) = 4 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] newfstatat(4, "", [pid 5056] getdents64(3, [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] getdents64(4, [pid 5057] <... openat resumed>) = 3 [pid 5056] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] getdents64(4, [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] newfstatat(AT_FDCWD, "./14/binderfs", [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] close(4 [pid 5056] unlink("./14/binderfs" [pid 5055] <... close resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5056] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] rmdir("./14/file1") = 0 [pid 5055] getdents64(3, [pid 5058] <... umount2 resumed>) = 0 [pid 5056] <... umount2 resumed>) = 0 [pid 5058] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5058] newfstatat(AT_FDCWD, "./14/file1", [pid 5055] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] rmdir("./14" [pid 5058] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... rmdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] mkdir("./15", 0777 [pid 5056] newfstatat(AT_FDCWD, "./14/file1", [pid 5058] <... openat resumed>) = 4 [pid 5058] newfstatat(4, "", [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5056] umount2("./14/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./14/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] getdents64(4, [pid 5056] <... openat resumed>) = 4 [pid 5055] <... openat resumed>) = 3 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5058] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4) = 0 [pid 5058] rmdir("./14/file1") = 0 [pid 5056] newfstatat(4, "", [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./14") = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] mkdir("./15", 0777 [pid 5056] getdents64(4, [pid 5057] close(3 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5056] getdents64(4, [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 5230 attached [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5230 [pid 5056] close(4) = 0 [pid 5056] rmdir("./14/file1" [pid 5230] set_robust_list(0x55555695e660, 24 [pid 5056] <... rmdir resumed>) = 0 [pid 5056] getdents64(3, [pid 5230] <... set_robust_list resumed>) = 0 [pid 5230] chdir("./15" [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5230] <... chdir resumed>) = 0 [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5056] close(3) = 0 [pid 5230] setpgid(0, 0 [pid 5056] rmdir("./14") = 0 [pid 5056] mkdir("./15", 0777 [pid 5230] <... setpgid resumed>) = 0 [pid 5056] <... mkdir resumed>) = 0 [pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5055] <... ioctl resumed>) = 0 [pid 5230] <... openat resumed>) = 3 [pid 5058] <... ioctl resumed>) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5055] close(3) = 0 [pid 5230] write(3, "1000", 4 [pid 5056] <... openat resumed>) = 3 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5230] <... write resumed>) = 4 [pid 5058] close(3 [pid 5230] close(3 [pid 5058] <... close resumed>) = 0 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5230] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5232 attached ./strace-static-x86_64: Process 5231 attached [pid 5230] symlink("/dev/binderfs", "./binderfs" [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5231 [pid 5230] <... symlink resumed>) = 0 [pid 5230] memfd_create("syzkaller", 0 [pid 5232] set_robust_list(0x55555695e660, 24) = 0 [pid 5231] set_robust_list(0x55555695e660, 24 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5232 [pid 5232] chdir("./15" [pid 5230] <... memfd_create resumed>) = 3 [pid 5231] <... set_robust_list resumed>) = 0 [pid 5232] <... chdir resumed>) = 0 [pid 5231] chdir("./15" [pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5231] <... chdir resumed>) = 0 [pid 5232] setpgid(0, 0) = 0 [pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5231] setpgid(0, 0 [pid 5232] <... openat resumed>) = 3 [pid 5231] <... setpgid resumed>) = 0 [pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5232] write(3, "1000", 4 [pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5232] <... write resumed>) = 4 [pid 5231] <... openat resumed>) = 3 [pid 5230] <... mmap resumed>) = 0x7f4da0c00000 [pid 5232] close(3) = 0 [pid 5232] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5231] write(3, "1000", 4) = 4 [pid 5231] close(3) = 0 [pid 5231] symlink("/dev/binderfs", "./binderfs" [pid 5232] memfd_create("syzkaller", 0 [pid 5231] <... symlink resumed>) = 0 [pid 5232] <... memfd_create resumed>) = 3 [pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5231] memfd_create("syzkaller", 0 [pid 5230] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5232] <... mmap resumed>) = 0x7f4da0c00000 [pid 5231] <... memfd_create resumed>) = 3 [pid 5230] <... write resumed>) = 2097152 [pid 5056] <... ioctl resumed>) = 0 [pid 5232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5230] munmap(0x7f4da0c00000, 138412032 [pid 5056] close(3) = 0 [pid 5231] <... mmap resumed>) = 0x7f4da0c00000 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5230] <... munmap resumed>) = 0 [pid 5230] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 5233 attached ) = 4 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5233 [pid 5233] set_robust_list(0x55555695e660, 24 [pid 5232] <... write resumed>) = 2097152 [pid 5231] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5230] ioctl(4, LOOP_SET_FD, 3 [pid 5233] <... set_robust_list resumed>) = 0 [pid 5232] munmap(0x7f4da0c00000, 138412032 [pid 5233] chdir("./15" [pid 5232] <... munmap resumed>) = 0 [pid 5233] <... chdir resumed>) = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5230] <... ioctl resumed>) = 0 [pid 5233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5232] <... openat resumed>) = 4 [pid 5230] close(3 [pid 5233] setpgid(0, 0 [pid 5232] ioctl(4, LOOP_SET_FD, 3 [pid 5233] <... setpgid resumed>) = 0 [pid 5231] <... write resumed>) = 2097152 [pid 5230] <... close resumed>) = 0 [pid 5231] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5232] <... ioctl resumed>) = 0 [pid 5230] close(4 [pid 5232] close(3 [pid 5231] <... openat resumed>) = 4 [pid 5230] <... close resumed>) = 0 [pid 5232] <... close resumed>) = 0 [pid 5231] ioctl(4, LOOP_SET_FD, 3 [pid 5230] mkdir("./file1", 0777 [pid 5232] close(4 [pid 5233] <... openat resumed>) = 3 [pid 5230] <... mkdir resumed>) = 0 [pid 5232] <... close resumed>) = 0 [pid 5230] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5232] mkdir("./file1", 0777 [pid 5233] write(3, "1000", 4 [pid 5232] <... mkdir resumed>) = 0 [pid 5233] <... write resumed>) = 4 [pid 5233] close(3) = 0 [pid 5233] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5232] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5233] memfd_create("syzkaller", 0) = 3 [ 62.873974][ T5230] loop3: detected capacity change from 0 to 4096 [ 62.885467][ T5232] loop4: detected capacity change from 0 to 4096 [ 62.901372][ T5231] loop1: detected capacity change from 0 to 4096 [ 62.910885][ T5230] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5231] <... ioctl resumed>) = 0 [pid 5231] close(3) = 0 [pid 5231] close(4) = 0 [pid 5231] mkdir("./file1", 0777) = 0 [pid 5231] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 62.923423][ T5232] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 62.937237][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop4 [ 62.944571][ T5231] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 62.955470][ T5230] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.957544][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop3 [pid 5233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5233] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5233] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5233] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5233] close(3) = 0 [pid 5233] close(4) = 0 [pid 5233] mkdir("./file1", 0777) = 0 [ 62.974912][ T5232] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.984486][ T5231] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 62.992078][ T5233] loop2: detected capacity change from 0 to 4096 [ 63.002100][ T5234] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 63.004551][ T5235] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5233] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5231] <... mount resumed>) = 0 [pid 5231] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] chdir("./file1") = 0 [pid 5231] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5231] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5230] <... mount resumed>) = 0 [pid 5230] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] <... mount resumed>) = 0 [pid 5232] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5232] chdir("./file1") = 0 [pid 5232] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5230] chdir("./file1" [pid 5232] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5230] <... chdir resumed>) = 0 [pid 5232] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5230] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5230] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5232] <... open resumed>) = 4 [pid 5232] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5232] ftruncate(5, 33587195) = 0 [pid 5231] <... open resumed>) = 4 [pid 5230] <... open resumed>) = 4 [ 63.018298][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop1 [ 63.033210][ T5236] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 63.038023][ T5233] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 63.056628][ T5233] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 63.058449][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop2 [pid 5232] sendfile(4, 5, NULL, 281474978811909 [pid 5233] <... mount resumed>) = 0 [pid 5231] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5230] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5233] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5231] <... open resumed>) = 5 [pid 5230] <... open resumed>) = 5 [pid 5233] chdir("./file1" [pid 5231] ftruncate(5, 33587195 [pid 5233] <... chdir resumed>) = 0 [pid 5230] ftruncate(5, 33587195 [pid 5233] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5231] <... ftruncate resumed>) = 0 [pid 5230] <... ftruncate resumed>) = 0 [pid 5233] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5231] sendfile(4, 5, NULL, 281474978811909 [pid 5230] sendfile(4, 5, NULL, 281474978811909 [pid 5233] <... open resumed>) = 4 [pid 5233] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5233] ftruncate(5, 33587195) = 0 [ 63.073802][ T5237] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5233] sendfile(4, 5, NULL, 281474978811909 [pid 5232] <... sendfile resumed>) = 368640 [pid 5232] unlink("./bus") = 0 [pid 5232] exit_group(0) = ? [pid 5232] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5231] <... sendfile resumed>) = 368640 [pid 5058] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5231] unlink("./bus" [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", [pid 5233] <... sendfile resumed>) = 368640 [pid 5231] <... unlink resumed>) = 0 [pid 5230] <... sendfile resumed>) = 368640 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5233] unlink("./bus" [pid 5231] exit_group(0 [pid 5058] getdents64(3, [pid 5231] <... exit_group resumed>) = ? [pid 5230] unlink("./bus" [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5233] <... unlink resumed>) = 0 [pid 5231] +++ exited with 0 +++ [pid 5230] <... unlink resumed>) = 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5230] exit_group(0 [pid 5233] exit_group(0 [pid 5230] <... exit_group resumed>) = ? [pid 5058] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5233] <... exit_group resumed>) = ? [pid 5055] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5055] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./15/binderfs") = 0 [pid 5055] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] unlink("./15/binderfs") = 0 [pid 5058] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5230] +++ exited with 0 +++ [pid 5058] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5233] +++ exited with 0 +++ [pid 5055] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... restart_syscall resumed>) = 0 [pid 5055] newfstatat(AT_FDCWD, "./15/file1", [pid 5058] newfstatat(AT_FDCWD, "./15/file1", [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5233, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... openat resumed>) = 3 [pid 5056] <... openat resumed>) = 3 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(3, "", [pid 5056] newfstatat(3, "", [pid 5058] <... openat resumed>) = 4 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(4, "", [pid 5057] getdents64(3, [pid 5056] getdents64(3, [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] <... openat resumed>) = 4 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] newfstatat(4, "", [pid 5058] getdents64(4, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] getdents64(4, [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] newfstatat(AT_FDCWD, "./15/binderfs", [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] unlink("./15/binderfs" [pid 5056] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] getdents64(4, [pid 5058] close(4 [pid 5056] unlink("./15/binderfs" [pid 5058] <... close resumed>) = 0 [pid 5057] <... unlink resumed>) = 0 [pid 5056] <... unlink resumed>) = 0 [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] rmdir("./15/file1" [pid 5057] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5056] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5055] getdents64(4, [pid 5057] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./15/file1", [pid 5055] close(4 [pid 5058] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3) = 0 [pid 5058] rmdir("./15" [pid 5055] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] rmdir("./15/file1" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... rmdir resumed>) = 0 [pid 5058] mkdir("./16", 0777 [pid 5056] <... umount2 resumed>) = 0 [pid 5055] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5057] newfstatat(4, "", [pid 5056] newfstatat(AT_FDCWD, "./15/file1", [pid 5055] <... close resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] rmdir("./15" [pid 5058] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] getdents64(4, [pid 5056] umount2("./15/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... rmdir resumed>) = 0 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] getdents64(4, [pid 5056] openat(AT_FDCWD, "./15/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] <... openat resumed>) = 4 [pid 5057] close(4) = 0 [pid 5057] rmdir("./15/file1" [pid 5056] newfstatat(4, "", [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] getdents64(3, [pid 5056] getdents64(4, [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(3 [pid 5056] close(4 [pid 5057] <... close resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5055] mkdir("./16", 0777 [pid 5057] rmdir("./15" [pid 5056] rmdir("./15/file1" [pid 5057] <... rmdir resumed>) = 0 [pid 5056] <... rmdir resumed>) = 0 [pid 5057] mkdir("./16", 0777 [pid 5056] getdents64(3, [pid 5055] <... mkdir resumed>) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5057] <... mkdir resumed>) = 0 [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5056] close(3) = 0 [pid 5056] rmdir("./15") = 0 [pid 5056] mkdir("./16", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5058] <... ioctl resumed>) = 0 [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5238 attached , child_tidptr=0x55555695e650) = 5238 [pid 5238] set_robust_list(0x55555695e660, 24) = 0 [pid 5238] chdir("./16") = 0 [pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5238] setpgid(0, 0 [pid 5055] close(3 [pid 5238] <... setpgid resumed>) = 0 [pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... ioctl resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] close(3) = 0 [pid 5238] <... openat resumed>) = 3 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5240 attached ./strace-static-x86_64: Process 5239 attached [pid 5238] write(3, "1000", 4 [pid 5056] <... ioctl resumed>) = 0 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5240 [pid 5238] <... write resumed>) = 4 [pid 5240] set_robust_list(0x55555695e660, 24 [pid 5239] set_robust_list(0x55555695e660, 24 [pid 5238] close(3 [pid 5240] <... set_robust_list resumed>) = 0 [pid 5239] <... set_robust_list resumed>) = 0 [pid 5238] <... close resumed>) = 0 [pid 5056] close(3 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5239 [pid 5240] chdir("./16" [pid 5238] symlink("/dev/binderfs", "./binderfs" [pid 5056] <... close resumed>) = 0 [pid 5239] chdir("./16" [pid 5238] <... symlink resumed>) = 0 [pid 5240] <... chdir resumed>) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 5241 attached [pid 5239] <... chdir resumed>) = 0 [pid 5238] memfd_create("syzkaller", 0 [pid 5240] setpgid(0, 0 [pid 5239] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5238] <... memfd_create resumed>) = 3 [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5241 [pid 5241] set_robust_list(0x55555695e660, 24 [pid 5240] <... setpgid resumed>) = 0 [pid 5239] <... prctl resumed>) = 0 [pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5239] setpgid(0, 0 [pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5239] <... setpgid resumed>) = 0 [pid 5238] <... mmap resumed>) = 0x7f4da0c00000 [pid 5241] <... set_robust_list resumed>) = 0 [pid 5240] <... openat resumed>) = 3 [pid 5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5241] chdir("./16") = 0 [pid 5240] write(3, "1000", 4 [pid 5241] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5240] <... write resumed>) = 4 [pid 5241] <... prctl resumed>) = 0 [pid 5239] <... openat resumed>) = 3 [pid 5241] setpgid(0, 0 [pid 5240] close(3 [pid 5239] write(3, "1000", 4 [pid 5241] <... setpgid resumed>) = 0 [pid 5240] <... close resumed>) = 0 [pid 5239] <... write resumed>) = 4 [pid 5241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5240] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] close(3 [pid 5241] <... openat resumed>) = 3 [pid 5241] write(3, "1000", 4 [pid 5240] memfd_create("syzkaller", 0 [pid 5241] <... write resumed>) = 4 [pid 5239] <... close resumed>) = 0 [pid 5241] close(3 [pid 5239] symlink("/dev/binderfs", "./binderfs" [pid 5241] <... close resumed>) = 0 [pid 5241] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5239] <... symlink resumed>) = 0 [pid 5240] <... memfd_create resumed>) = 3 [pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5241] memfd_create("syzkaller", 0 [pid 5240] <... mmap resumed>) = 0x7f4da0c00000 [pid 5239] memfd_create("syzkaller", 0) = 3 [pid 5239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5241] <... memfd_create resumed>) = 3 [pid 5239] <... mmap resumed>) = 0x7f4da0c00000 [pid 5241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5239] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5239] <... write resumed>) = 2097152 [pid 5239] munmap(0x7f4da0c00000, 138412032 [pid 5238] <... write resumed>) = 2097152 [pid 5238] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5238] ioctl(4, LOOP_SET_FD, 3 [pid 5240] <... write resumed>) = 2097152 [pid 5241] <... write resumed>) = 2097152 [pid 5239] <... munmap resumed>) = 0 [pid 5238] <... ioctl resumed>) = 0 [pid 5241] munmap(0x7f4da0c00000, 138412032 [pid 5240] munmap(0x7f4da0c00000, 138412032 [pid 5239] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5238] close(3) = 0 [pid 5238] close(4 [pid 5241] <... munmap resumed>) = 0 [pid 5240] <... munmap resumed>) = 0 [pid 5239] <... openat resumed>) = 4 [pid 5238] <... close resumed>) = 0 [pid 5239] ioctl(4, LOOP_SET_FD, 3 [pid 5241] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5241] ioctl(4, LOOP_SET_FD, 3 [pid 5238] mkdir("./file1", 0777 [pid 5240] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5239] <... ioctl resumed>) = 0 [pid 5238] <... mkdir resumed>) = 0 [pid 5238] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5240] <... openat resumed>) = 4 [pid 5239] close(3 [pid 5240] ioctl(4, LOOP_SET_FD, 3 [pid 5239] <... close resumed>) = 0 [pid 5241] <... ioctl resumed>) = 0 [pid 5240] <... ioctl resumed>) = 0 [pid 5239] close(4 [pid 5241] close(3 [pid 5240] close(3 [pid 5239] <... close resumed>) = 0 [pid 5241] <... close resumed>) = 0 [pid 5240] <... close resumed>) = 0 [pid 5239] mkdir("./file1", 0777 [pid 5241] close(4 [pid 5240] close(4 [pid 5239] <... mkdir resumed>) = 0 [pid 5240] <... close resumed>) = 0 [pid 5239] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 63.522085][ T5238] loop4: detected capacity change from 0 to 4096 [ 63.536734][ T5239] loop1: detected capacity change from 0 to 4096 [ 63.541189][ T5241] loop2: detected capacity change from 0 to 4096 [ 63.551153][ T5240] loop3: detected capacity change from 0 to 4096 [ 63.551229][ T5238] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5240] mkdir("./file1", 0777 [pid 5241] <... close resumed>) = 0 [pid 5241] mkdir("./file1", 0777 [pid 5240] <... mkdir resumed>) = 0 [pid 5240] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5241] <... mkdir resumed>) = 0 [ 63.572806][ T5239] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 63.584556][ T5238] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 63.595682][ T5241] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 63.596356][ T5240] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 63.608978][ T5071] udevd[5071]: incorrect nilfs2 checksum on /dev/loop1 [ 63.617450][ T5067] udevd[5067]: incorrect nilfs2 checksum on /dev/loop4 [ 63.634321][ T5239] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 63.636010][ T5242] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 63.644633][ T5240] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 63.659334][ T5241] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5241] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5238] <... mount resumed>) = 0 [pid 5238] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5238] chdir("./file1") = 0 [pid 5238] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5238] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5239] <... mount resumed>) = 0 [pid 5238] <... open resumed>) = 4 [pid 5238] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5238] ftruncate(5, 33587195) = 0 [pid 5238] sendfile(4, 5, NULL, 281474978811909 [pid 5241] <... mount resumed>) = 0 [pid 5241] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5241] chdir("./file1") = 0 [pid 5241] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5241] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5239] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5240] <... mount resumed>) = 0 [pid 5239] chdir("./file1" [pid 5240] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5239] <... chdir resumed>) = 0 [pid 5241] <... open resumed>) = 4 [pid 5240] <... openat resumed>) = 3 [pid 5239] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5241] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5240] chdir("./file1" [pid 5241] <... open resumed>) = 5 [pid 5239] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5240] <... chdir resumed>) = 0 [pid 5241] ftruncate(5, 33587195 [pid 5239] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5240] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5241] <... ftruncate resumed>) = 0 [pid 5240] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5241] sendfile(4, 5, NULL, 281474978811909 [pid 5240] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5239] <... open resumed>) = 4 [pid 5239] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5240] <... open resumed>) = 4 [pid 5239] <... open resumed>) = 5 [pid 5240] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5239] ftruncate(5, 33587195 [pid 5240] <... open resumed>) = 5 [pid 5240] ftruncate(5, 33587195) = 0 [pid 5239] <... ftruncate resumed>) = 0 [pid 5240] sendfile(4, 5, NULL, 281474978811909 [ 63.686923][ T5245] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 63.687429][ T5243] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 63.703004][ T5244] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5239] sendfile(4, 5, NULL, 281474978811909 [pid 5241] <... sendfile resumed>) = 368640 [pid 5241] unlink("./bus") = 0 [pid 5241] exit_group(0) = ? [pid 5241] +++ exited with 0 +++ [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5241, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5056] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5056] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./16/binderfs") = 0 [pid 5056] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5056] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./16/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./16/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./16") = 0 [pid 5056] mkdir("./17", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5240] <... sendfile resumed>) = 368640 [pid 5239] <... sendfile resumed>) = 368640 [pid 5238] <... sendfile resumed>) = 368640 [pid 5240] unlink("./bus" [pid 5238] unlink("./bus" [pid 5239] unlink("./bus" [pid 5240] <... unlink resumed>) = 0 [pid 5238] <... unlink resumed>) = 0 [pid 5239] <... unlink resumed>) = 0 [pid 5238] exit_group(0 [pid 5240] exit_group(0 [pid 5238] <... exit_group resumed>) = ? [pid 5240] <... exit_group resumed>) = ? [pid 5239] exit_group(0) = ? [pid 5238] +++ exited with 0 +++ [pid 5240] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5058] <... restart_syscall resumed>) = 0 [pid 5057] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5057] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] unlink("./16/binderfs") = 0 [pid 5057] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5058] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... ioctl resumed>) = 0 [pid 5239] +++ exited with 0 +++ [pid 5058] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] close(3 [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5239, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5058] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5057] newfstatat(AT_FDCWD, "./16/file1", [pid 5056] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] unlink("./16/binderfs") = 0 [pid 5058] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 ./strace-static-x86_64: Process 5246 attached [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(3, "", [pid 5246] set_robust_list(0x55555695e660, 24 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5246] <... set_robust_list resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5246 [pid 5246] chdir("./17" [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./16/binderfs", [pid 5057] <... openat resumed>) = 4 [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5246] <... chdir resumed>) = 0 [pid 5055] unlink("./16/binderfs" [pid 5057] newfstatat(4, "", [pid 5055] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5057] getdents64(4, [pid 5246] <... prctl resumed>) = 0 [pid 5058] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5246] setpgid(0, 0 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] close(4 [pid 5246] <... setpgid resumed>) = 0 [pid 5058] newfstatat(AT_FDCWD, "./16/file1", [pid 5057] <... close resumed>) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] rmdir("./16/file1" [pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5057] <... rmdir resumed>) = 0 [pid 5058] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5246] <... openat resumed>) = 3 [pid 5246] write(3, "1000", 4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5246] <... write resumed>) = 4 [pid 5058] openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5057] getdents64(3, [pid 5055] <... umount2 resumed>) = 0 [pid 5246] close(3 [pid 5058] <... openat resumed>) = 4 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5246] <... close resumed>) = 0 [pid 5246] symlink("/dev/binderfs", "./binderfs" [pid 5058] newfstatat(4, "", [pid 5057] close(3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5246] <... symlink resumed>) = 0 [pid 5057] <... close resumed>) = 0 [pid 5058] getdents64(4, [pid 5057] rmdir("./16" [pid 5246] memfd_create("syzkaller", 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5246] <... memfd_create resumed>) = 3 [pid 5058] getdents64(4, [pid 5055] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] <... rmdir resumed>) = 0 [pid 5246] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] close(4 [pid 5057] mkdir("./17", 0777 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5058] <... close resumed>) = 0 [pid 5055] newfstatat(AT_FDCWD, "./16/file1", [pid 5058] rmdir("./16/file1" [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5055] umount2("./16/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5246] <... write resumed>) = 2097152 [pid 5058] getdents64(3, [pid 5055] openat(AT_FDCWD, "./16/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5055] <... openat resumed>) = 4 [pid 5058] close(3) = 0 [pid 5055] newfstatat(4, "", [pid 5058] rmdir("./16" [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] mkdir("./17", 0777 [pid 5055] close(4 [pid 5246] munmap(0x7f4da0c00000, 138412032 [pid 5058] <... mkdir resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5055] rmdir("./16/file1") = 0 [pid 5246] <... munmap resumed>) = 0 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5055] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5055] close(3) = 0 [pid 5055] rmdir("./16" [pid 5246] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5055] <... rmdir resumed>) = 0 [pid 5246] ioctl(4, LOOP_SET_FD, 3 [pid 5055] mkdir("./17", 0777) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5246] <... ioctl resumed>) = 0 [pid 5246] close(3 [pid 5055] <... openat resumed>) = 3 [pid 5246] <... close resumed>) = 0 [pid 5057] <... ioctl resumed>) = 0 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5246] close(4 [pid 5057] close(3 [pid 5246] <... close resumed>) = 0 [pid 5246] mkdir("./file1", 0777 [pid 5057] <... close resumed>) = 0 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555695e650) = 5247 ./strace-static-x86_64: Process 5247 attached [pid 5247] set_robust_list(0x55555695e660, 24 [pid 5246] <... mkdir resumed>) = 0 [pid 5247] <... set_robust_list resumed>) = 0 [pid 5246] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5247] chdir("./17") = 0 [pid 5247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5247] setpgid(0, 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5247] <... setpgid resumed>) = 0 [pid 5058] close(3 [pid 5247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... close resumed>) = 0 [pid 5247] <... openat resumed>) = 3 [pid 5247] write(3, "1000", 4 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5247] <... write resumed>) = 4 [pid 5247] close(3./strace-static-x86_64: Process 5248 attached ) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5248 [pid 5247] symlink("/dev/binderfs", "./binderfs" [pid 5248] set_robust_list(0x55555695e660, 24) = 0 [pid 5247] <... symlink resumed>) = 0 [pid 5248] chdir("./17" [pid 5247] memfd_create("syzkaller", 0 [pid 5248] <... chdir resumed>) = 0 [pid 5247] <... memfd_create resumed>) = 3 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5248] <... prctl resumed>) = 0 [pid 5247] <... mmap resumed>) = 0x7f4da0c00000 [pid 5247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5248] setpgid(0, 0) = 0 [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 64.053144][ T5246] loop2: detected capacity change from 0 to 4096 [ 64.086172][ T5246] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5248] write(3, "1000", 4 [pid 5055] <... ioctl resumed>) = 0 [pid 5248] <... write resumed>) = 4 [pid 5248] close(3) = 0 [pid 5248] symlink("/dev/binderfs", "./binderfs" [pid 5055] close(3) = 0 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555695e650) = 5249 ./strace-static-x86_64: Process 5249 attached [pid 5249] set_robust_list(0x55555695e660, 24) = 0 [pid 5249] chdir("./17") = 0 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5248] <... symlink resumed>) = 0 [pid 5249] <... openat resumed>) = 3 [pid 5248] memfd_create("syzkaller", 0 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 [pid 5249] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5249] memfd_create("syzkaller", 0) = 3 [pid 5249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5248] <... memfd_create resumed>) = 3 [pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5247] <... write resumed>) = 2097152 [pid 5249] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5246] <... mount resumed>) = 0 [pid 5246] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5246] chdir("./file1") = 0 [pid 5246] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5246] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5249] <... write resumed>) = 2097152 [pid 5248] <... write resumed>) = 2097152 [pid 5247] munmap(0x7f4da0c00000, 138412032 [pid 5246] <... open resumed>) = 4 [pid 5249] munmap(0x7f4da0c00000, 138412032 [pid 5248] munmap(0x7f4da0c00000, 138412032 [pid 5246] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5249] <... munmap resumed>) = 0 [pid 5246] <... open resumed>) = 5 [pid 5246] ftruncate(5, 33587195 [pid 5249] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5248] <... munmap resumed>) = 0 [pid 5247] <... munmap resumed>) = 0 [pid 5246] <... ftruncate resumed>) = 0 [pid 5249] <... openat resumed>) = 4 [ 64.134625][ T5246] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.167060][ T5250] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5248] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5247] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5246] sendfile(4, 5, NULL, 281474978811909 [pid 5249] ioctl(4, LOOP_SET_FD, 3 [pid 5248] <... openat resumed>) = 4 [pid 5248] ioctl(4, LOOP_SET_FD, 3 [pid 5247] <... openat resumed>) = 4 [pid 5247] ioctl(4, LOOP_SET_FD, 3 [pid 5249] <... ioctl resumed>) = 0 [pid 5248] <... ioctl resumed>) = 0 [pid 5247] <... ioctl resumed>) = 0 [pid 5247] close(3 [pid 5249] close(3) = 0 [pid 5249] close(4 [pid 5247] <... close resumed>) = 0 [pid 5249] <... close resumed>) = 0 [pid 5248] close(3 [pid 5247] close(4 [pid 5249] mkdir("./file1", 0777 [pid 5248] <... close resumed>) = 0 [pid 5247] <... close resumed>) = 0 [pid 5249] <... mkdir resumed>) = 0 [pid 5248] close(4 [pid 5247] mkdir("./file1", 0777 [pid 5248] <... close resumed>) = 0 [pid 5249] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5248] mkdir("./file1", 0777 [pid 5247] <... mkdir resumed>) = 0 [pid 5248] <... mkdir resumed>) = 0 [pid 5248] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [ 64.208319][ T5249] loop1: detected capacity change from 0 to 4096 [ 64.215278][ T5248] loop4: detected capacity change from 0 to 4096 [ 64.222545][ T5247] loop3: detected capacity change from 0 to 4096 [ 64.239068][ T5249] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.258692][ T5247] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.259297][ T5249] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.268292][ T5248] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.295431][ T5247] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5247] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5249] <... mount resumed>) = 0 [pid 5247] <... mount resumed>) = 0 [pid 5247] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5247] chdir("./file1") = 0 [pid 5247] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5247] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5249] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5248] <... mount resumed>) = 0 [pid 5247] <... open resumed>) = 4 [pid 5249] <... openat resumed>) = 3 [pid 5248] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5247] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5249] chdir("./file1") = 0 [pid 5248] <... openat resumed>) = 3 [pid 5249] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5248] chdir("./file1" [pid 5247] <... open resumed>) = 5 [pid 5249] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5248] <... chdir resumed>) = 0 [pid 5247] ftruncate(5, 33587195 [pid 5248] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5247] <... ftruncate resumed>) = 0 [pid 5248] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5247] sendfile(4, 5, NULL, 281474978811909 [pid 5248] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5246] <... sendfile resumed>) = 368640 [pid 5246] unlink("./bus") = 0 [pid 5246] exit_group(0) = ? [pid 5249] <... open resumed>) = 4 [pid 5249] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000) = 5 [pid 5249] ftruncate(5, 33587195) = 0 [pid 5249] sendfile(4, 5, NULL, 281474978811909 [pid 5248] <... open resumed>) = 4 [pid 5246] +++ exited with 0 +++ [pid 5248] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5248] <... open resumed>) = 5 [pid 5056] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5248] ftruncate(5, 33587195 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 64.312396][ T5248] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.323581][ T5251] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 64.334426][ T5252] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 64.345291][ T5253] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./17/binderfs") = 0 [pid 5248] <... ftruncate resumed>) = 0 [pid 5248] sendfile(4, 5, NULL, 281474978811909 [pid 5056] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5056] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4) = 0 [pid 5056] rmdir("./17/file1") = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./17") = 0 [pid 5056] mkdir("./18", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5249] <... sendfile resumed>) = 368640 [pid 5249] unlink("./bus") = 0 [pid 5249] exit_group(0 [pid 5248] <... sendfile resumed>) = 368640 [pid 5247] <... sendfile resumed>) = 368640 [pid 5249] <... exit_group resumed>) = ? [pid 5248] unlink("./bus" [pid 5247] unlink("./bus" [pid 5248] <... unlink resumed>) = 0 [pid 5248] exit_group(0) = ? [pid 5247] <... unlink resumed>) = 0 [pid 5247] exit_group(0) = ? [pid 5247] +++ exited with 0 +++ [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5247, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5248] +++ exited with 0 +++ [pid 5057] restart_syscall(<... resuming interrupted clone ...> [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 5057] <... restart_syscall resumed>) = 0 [pid 5058] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] getdents64(3, [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5249] +++ exited with 0 +++ [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... ioctl resumed>) = 0 [pid 5058] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... openat resumed>) = 3 [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5249, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] newfstatat(3, "", [pid 5058] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] close(3 [pid 5058] unlink("./17/binderfs" [pid 5057] getdents64(3, [pid 5058] <... unlink resumed>) = 0 [pid 5058] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] <... close resumed>) = 0 [pid 5057] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5055] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5254 attached [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5254] set_robust_list(0x55555695e660, 24 [pid 5055] <... openat resumed>) = 3 [pid 5254] <... set_robust_list resumed>) = 0 [pid 5055] newfstatat(3, "", [pid 5254] chdir("./18" [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5254] <... chdir resumed>) = 0 [pid 5057] unlink("./17/binderfs" [pid 5055] getdents64(3, [pid 5057] <... unlink resumed>) = 0 [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5057] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5254 [pid 5055] newfstatat(AT_FDCWD, "./17/binderfs", [pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5254] <... prctl resumed>) = 0 [pid 5055] unlink("./17/binderfs" [pid 5254] setpgid(0, 0 [pid 5055] <... unlink resumed>) = 0 [pid 5254] <... setpgid resumed>) = 0 [pid 5055] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5254] write(3, "1000", 4) = 4 [pid 5254] close(3) = 0 [pid 5254] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5254] memfd_create("syzkaller", 0) = 3 [pid 5058] <... umount2 resumed>) = 0 [pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5254] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./17/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./17/file1", [pid 5057] newfstatat(AT_FDCWD, "./17/file1", [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... openat resumed>) = 4 [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] umount2("./17/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] newfstatat(4, "", [pid 5058] <... openat resumed>) = 4 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] openat(AT_FDCWD, "./17/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(4, "", [pid 5057] <... openat resumed>) = 4 [pid 5055] getdents64(4, [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5057] newfstatat(4, "", [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] getdents64(4, [pid 5055] getdents64(4, [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] getdents64(4, [pid 5055] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5057] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] close(4 [pid 5058] <... close resumed>) = 0 [pid 5057] getdents64(4, [pid 5055] <... close resumed>) = 0 [pid 5254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5055] rmdir("./17/file1" [pid 5058] rmdir("./17/file1" [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5055] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] close(4) = 0 [pid 5055] getdents64(3, [pid 5057] rmdir("./17/file1" [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(3, [pid 5057] <... rmdir resumed>) = 0 [pid 5055] close(3 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5058] close(3 [pid 5055] <... close resumed>) = 0 [pid 5058] <... close resumed>) = 0 [pid 5055] rmdir("./17" [pid 5058] rmdir("./17" [pid 5055] <... rmdir resumed>) = 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, 0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./17" [pid 5055] mkdir("./18", 0777 [pid 5058] mkdir("./18", 0777 [pid 5057] <... rmdir resumed>) = 0 [pid 5055] <... mkdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] mkdir("./18", 0777) = 0 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5055] <... openat resumed>) = 3 [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5254] <... write resumed>) = 2097152 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5254] munmap(0x7f4da0c00000, 138412032 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5254] <... munmap resumed>) = 0 [pid 5254] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5254] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5254] close(3) = 0 [pid 5254] close(4) = 0 [pid 5254] mkdir("./file1", 0777 [pid 5057] <... ioctl resumed>) = 0 [pid 5254] <... mkdir resumed>) = 0 [pid 5058] <... ioctl resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5254] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5058] close(3) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5255 attached [pid 5255] set_robust_list(0x55555695e660, 24) = 0 [pid 5255] chdir("./18") = 0 [pid 5255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5255] setpgid(0, 0 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5255 [pid 5255] <... setpgid resumed>) = 0 [pid 5255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 64.621644][ T5254] loop2: detected capacity change from 0 to 4096 [pid 5057] close(3 [pid 5255] write(3, "1000", 4 [pid 5057] <... close resumed>) = 0 [pid 5255] <... write resumed>) = 4 [pid 5057] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5256 attached [pid 5255] close(3 [pid 5055] close(3 [pid 5057] <... clone resumed>, child_tidptr=0x55555695e650) = 5256 [pid 5255] <... close resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5256] set_robust_list(0x55555695e660, 24 [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5256] <... set_robust_list resumed>) = 0 [pid 5255] symlink("/dev/binderfs", "./binderfs") = 0 ./strace-static-x86_64: Process 5257 attached [pid 5256] chdir("./18" [pid 5255] memfd_create("syzkaller", 0 [pid 5257] set_robust_list(0x55555695e660, 24) = 0 [pid 5256] <... chdir resumed>) = 0 [pid 5255] <... memfd_create resumed>) = 3 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5257 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5257] chdir("./18" [pid 5256] <... prctl resumed>) = 0 [pid 5255] <... mmap resumed>) = 0x7f4da0c00000 [pid 5257] <... chdir resumed>) = 0 [pid 5256] setpgid(0, 0 [pid 5255] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5257] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5256] <... setpgid resumed>) = 0 [pid 5257] <... prctl resumed>) = 0 [pid 5257] setpgid(0, 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5257] <... setpgid resumed>) = 0 [pid 5256] <... openat resumed>) = 3 [pid 5257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5256] write(3, "1000", 4 [pid 5257] <... openat resumed>) = 3 [pid 5256] <... write resumed>) = 4 [pid 5257] write(3, "1000", 4 [pid 5256] close(3 [pid 5257] <... write resumed>) = 4 [pid 5256] <... close resumed>) = 0 [pid 5257] close(3 [pid 5256] symlink("/dev/binderfs", "./binderfs" [pid 5257] <... close resumed>) = 0 [pid 5257] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5257] memfd_create("syzkaller", 0) = 3 [pid 5256] <... symlink resumed>) = 0 [pid 5254] <... mount resumed>) = 0 [pid 5255] <... write resumed>) = 2097152 [ 64.671130][ T5254] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.688147][ T5254] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [pid 5255] munmap(0x7f4da0c00000, 138412032 [pid 5257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5256] memfd_create("syzkaller", 0 [pid 5254] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 5257] <... mmap resumed>) = 0x7f4da0c00000 [pid 5256] <... memfd_create resumed>) = 3 [pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [pid 5255] <... munmap resumed>) = 0 [pid 5254] <... openat resumed>) = 3 [pid 5257] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5255] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5254] chdir("./file1") = 0 [pid 5255] ioctl(4, LOOP_SET_FD, 3 [ 64.712464][ T5258] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5254] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5254] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5257] <... write resumed>) = 2097152 [pid 5255] <... ioctl resumed>) = 0 [pid 5257] munmap(0x7f4da0c00000, 138412032 [pid 5255] close(3 [pid 5256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5257] <... munmap resumed>) = 0 [pid 5255] <... close resumed>) = 0 [pid 5254] <... open resumed>) = 4 [pid 5257] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5255] close(4 [pid 5254] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5257] <... openat resumed>) = 4 [pid 5255] <... close resumed>) = 0 [pid 5254] <... open resumed>) = 5 [pid 5255] mkdir("./file1", 0777 [pid 5254] ftruncate(5, 33587195 [pid 5257] ioctl(4, LOOP_SET_FD, 3 [pid 5255] <... mkdir resumed>) = 0 [pid 5255] mount("/dev/loop4", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5254] <... ftruncate resumed>) = 0 [pid 5254] sendfile(4, 5, NULL, 281474978811909 [pid 5257] <... ioctl resumed>) = 0 [pid 5257] close(3) = 0 [pid 5257] close(4) = 0 [pid 5257] mkdir("./file1", 0777) = 0 [ 64.743366][ T5255] loop4: detected capacity change from 0 to 4096 [ 64.767129][ T5257] loop1: detected capacity change from 0 to 4096 [ 64.774854][ T5255] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5257] mount("/dev/loop1", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5256] <... write resumed>) = 2097152 [pid 5256] munmap(0x7f4da0c00000, 138412032) = 0 [pid 5256] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 64.789086][ T5257] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.801388][ T5255] NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.806088][ T5257] NILFS (loop1): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.819902][ T5259] NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5257] <... mount resumed>) = 0 [pid 5256] ioctl(4, LOOP_SET_FD, 3 [pid 5255] <... mount resumed>) = 0 [pid 5257] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5257] chdir("./file1") = 0 [pid 5255] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5257] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5256] <... ioctl resumed>) = 0 [pid 5255] chdir("./file1") = 0 [pid 5257] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5256] close(3 [pid 5255] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5257] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5256] <... close resumed>) = 0 [pid 5255] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5255] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5256] close(4) = 0 [pid 5257] <... open resumed>) = 4 [pid 5256] mkdir("./file1", 0777 [pid 5255] <... open resumed>) = 4 [pid 5257] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5256] <... mkdir resumed>) = 0 [pid 5255] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5256] mount("/dev/loop3", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5257] <... open resumed>) = 5 [pid 5255] <... open resumed>) = 5 [pid 5254] <... sendfile resumed>) = 368640 [ 64.835008][ T5260] NILFS (loop1): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 64.846269][ T5256] loop3: detected capacity change from 0 to 4096 [pid 5257] ftruncate(5, 33587195 [pid 5255] ftruncate(5, 33587195 [pid 5254] unlink("./bus") = 0 [pid 5254] exit_group(0) = ? [pid 5257] <... ftruncate resumed>) = 0 [pid 5255] <... ftruncate resumed>) = 0 [pid 5257] sendfile(4, 5, NULL, 281474978811909 [pid 5255] sendfile(4, 5, NULL, 281474978811909 [pid 5256] <... mount resumed>) = 0 [pid 5256] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5256] chdir("./file1") = 0 [pid 5256] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5256] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5254] +++ exited with 0 +++ [pid 5256] <... open resumed>) = 4 [pid 5256] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_DIRECT|O_NOATIME, 000 [pid 5056] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5256] <... open resumed>) = 5 [pid 5056] restart_syscall(<... resuming interrupted clone ...> [pid 5256] ftruncate(5, 33587195 [pid 5056] <... restart_syscall resumed>) = 0 [pid 5056] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5256] <... ftruncate resumed>) = 0 [pid 5256] sendfile(4, 5, NULL, 281474978811909 [pid 5056] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5056] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5056] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] unlink("./18/binderfs") = 0 [ 64.895713][ T5256] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024) [ 64.905796][ T5256] NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 4096) [ 64.921705][ T5261] NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5056] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 [pid 5056] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5257] <... sendfile resumed>) = 368640 [pid 5255] <... sendfile resumed>) = 368640 [pid 5255] unlink("./bus" [pid 5257] unlink("./bus" [pid 5056] newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5056] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5056] openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5056] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5056] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5056] close(4 [pid 5255] <... unlink resumed>) = 0 [pid 5056] <... close resumed>) = 0 [pid 5257] <... unlink resumed>) = 0 [pid 5255] exit_group(0 [pid 5056] rmdir("./18/file1" [pid 5257] exit_group(0 [pid 5255] <... exit_group resumed>) = ? [pid 5056] <... rmdir resumed>) = 0 [pid 5056] getdents64(3, [pid 5257] <... exit_group resumed>) = ? [pid 5056] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5056] close(3) = 0 [pid 5056] rmdir("./18") = 0 [pid 5056] mkdir("./19", 0777) = 0 [pid 5056] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5056] ioctl(3, LOOP_CLR_FD [pid 5255] +++ exited with 0 +++ [pid 5058] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5255, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5058] restart_syscall(<... resuming interrupted clone ...> [pid 5256] <... sendfile resumed>) = 368640 [pid 5058] <... restart_syscall resumed>) = 0 [pid 5256] unlink("./bus") = 0 [pid 5058] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5257] +++ exited with 0 +++ [pid 5256] exit_group(0) = ? [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5257, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5058] <... openat resumed>) = 3 [pid 5256] +++ exited with 0 +++ [pid 5058] newfstatat(3, "", [pid 5055] restart_syscall(<... resuming interrupted clone ...> [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5055] <... restart_syscall resumed>) = 0 [pid 5058] getdents64(3, [pid 5055] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5057] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5055] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5058] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5057] <... openat resumed>) = 3 [pid 5056] <... ioctl resumed>) = 0 [pid 5058] unlink("./18/binderfs" [pid 5055] newfstatat(3, "", [pid 5057] newfstatat(3, "", [pid 5056] close(3 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(3, 0x55555695f6f0 /* 4 entries */, 32768) = 112 [pid 5058] <... unlink resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5056] <... close resumed>) = 0 [pid 5057] getdents64(3, [pid 5056] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 4 entries */, 32768) = 112 ./strace-static-x86_64: Process 5262 attached [pid 5058] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5056] <... clone resumed>, child_tidptr=0x55555695e650) = 5262 [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5262] set_robust_list(0x55555695e660, 24 [pid 5057] newfstatat(AT_FDCWD, "./18/binderfs", [pid 5262] <... set_robust_list resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] <... newfstatat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] unlink("./18/binderfs" [pid 5262] chdir("./19" [pid 5055] <... unlink resumed>) = 0 [pid 5057] unlink("./18/binderfs" [pid 5055] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5057] <... unlink resumed>) = 0 [pid 5262] <... chdir resumed>) = 0 [pid 5058] <... umount2 resumed>) = 0 [pid 5057] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5262] setpgid(0, 0 [pid 5055] <... umount2 resumed>) = 0 [pid 5262] <... setpgid resumed>) = 0 [pid 5058] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5058] newfstatat(AT_FDCWD, "./18/file1", [pid 5055] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] newfstatat(AT_FDCWD, "./18/file1", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5058] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5055] openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5058] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... openat resumed>) = 4 [pid 5262] <... openat resumed>) = 3 [pid 5058] openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5055] newfstatat(4, "", [pid 5262] write(3, "1000", 4 [pid 5055] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5058] <... openat resumed>) = 4 [pid 5055] getdents64(4, [pid 5058] newfstatat(4, "", [pid 5055] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5058] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5055] getdents64(4, 0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] getdents64(4, [pid 5055] close(4 [pid 5058] <... getdents64 resumed>0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] <... close resumed>) = 0 [pid 5055] rmdir("./18/file1" [pid 5058] getdents64(4, [pid 5055] <... rmdir resumed>) = 0 [pid 5058] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5058] close(4 [pid 5262] <... write resumed>) = 4 [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = 0 [pid 5055] getdents64(3, [pid 5262] close(3 [pid 5058] rmdir("./18/file1" [pid 5262] <... close resumed>) = 0 [pid 5057] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5055] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5262] symlink("/dev/binderfs", "./binderfs" [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] close(3 [pid 5058] getdents64(3, [pid 5057] newfstatat(AT_FDCWD, "./18/file1", [pid 5055] <... close resumed>) = 0 [pid 5058] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5055] rmdir("./18" [pid 5262] <... symlink resumed>) = 0 [pid 5058] close(3 [pid 5057] umount2("./18/file1", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5262] memfd_create("syzkaller", 0 [pid 5058] <... close resumed>) = 0 [pid 5057] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5055] <... rmdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "./18/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5262] <... memfd_create resumed>) = 3 [pid 5058] rmdir("./18" [pid 5055] mkdir("./19", 0777 [pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5058] <... rmdir resumed>) = 0 [pid 5057] <... openat resumed>) = 4 [pid 5262] <... mmap resumed>) = 0x7f4da0c00000 [pid 5058] mkdir("./19", 0777 [pid 5057] newfstatat(4, "", [pid 5055] <... mkdir resumed>) = 0 [pid 5058] <... mkdir resumed>) = 0 [pid 5057] <... newfstatat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [pid 5057] getdents64(4, 0x555556967730 /* 2 entries */, 32768) = 48 [pid 5055] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5057] getdents64(4, [pid 5055] <... openat resumed>) = 3 [pid 5057] <... getdents64 resumed>0x555556967730 /* 0 entries */, 32768) = 0 [pid 5057] close(4 [pid 5058] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5057] <... close resumed>) = 0 [pid 5058] <... openat resumed>) = 3 [pid 5055] ioctl(3, LOOP_CLR_FD [pid 5057] rmdir("./18/file1" [pid 5058] ioctl(3, LOOP_CLR_FD [pid 5057] <... rmdir resumed>) = 0 [pid 5057] getdents64(3, [pid 5262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5057] <... getdents64 resumed>0x55555695f6f0 /* 0 entries */, 32768) = 0 [pid 5057] close(3) = 0 [pid 5057] rmdir("./18" [pid 5262] <... write resumed>) = 2097152 [pid 5262] munmap(0x7f4da0c00000, 138412032 [pid 5057] <... rmdir resumed>) = 0 [pid 5057] mkdir("./19", 0777 [pid 5262] <... munmap resumed>) = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5057] <... mkdir resumed>) = 0 [pid 5057] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5262] ioctl(4, LOOP_SET_FD, 3 [pid 5057] <... openat resumed>) = 3 [pid 5057] ioctl(3, LOOP_CLR_FD [pid 5262] <... ioctl resumed>) = 0 [pid 5262] close(3 [pid 5058] <... ioctl resumed>) = 0 [pid 5055] <... ioctl resumed>) = 0 [pid 5058] close(3 [pid 5055] close(3 [pid 5058] <... close resumed>) = 0 [pid 5055] <... close resumed>) = 0 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5055] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5263 attached [pid 5262] <... close resumed>) = 0 [pid 5262] close(4 [pid 5263] set_robust_list(0x55555695e660, 24./strace-static-x86_64: Process 5264 attached ) = 0 [pid 5262] <... close resumed>) = 0 [pid 5264] set_robust_list(0x55555695e660, 24 [pid 5263] chdir("./19" [pid 5262] mkdir("./file1", 0777 [pid 5058] <... clone resumed>, child_tidptr=0x55555695e650) = 5263 [pid 5055] <... clone resumed>, child_tidptr=0x55555695e650) = 5264 [pid 5264] <... set_robust_list resumed>) = 0 [pid 5263] <... chdir resumed>) = 0 [pid 5264] chdir("./19" [pid 5263] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5262] <... mkdir resumed>) = 0 [pid 5264] <... chdir resumed>) = 0 [pid 5263] <... prctl resumed>) = 0 [pid 5262] mount("/dev/loop2", "./file1", "nilfs2", MS_NODEV|MS_SYNCHRONOUS|MS_NOATIME|MS_SILENT|MS_LAZYTIME, "" [pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5263] setpgid(0, 0 [pid 5264] setpgid(0, 0 [pid 5263] <... setpgid resumed>) = 0 [ 65.181695][ T5262] loop2: detected capacity change from 0 to 4096 [ 65.217280][ T5262] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) [pid 5263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5264] <... setpgid resumed>) = 0 [pid 5263] <... openat resumed>) = 3 [pid 5263] write(3, "1000", 4 [pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5263] <... write resumed>) = 4 [pid 5263] close(3 [pid 5264] <... openat resumed>) = 3 [pid 5263] <... close resumed>) = 0 [pid 5264] write(3, "1000", 4 [pid 5263] symlink("/dev/binderfs", "./binderfs" [pid 5264] <... write resumed>) = 4 [pid 5264] close(3 [pid 5263] <... symlink resumed>) = 0 [pid 5264] <... close resumed>) = 0 [pid 5263] memfd_create("syzkaller", 0 [pid 5264] symlink("/dev/binderfs", "./binderfs" [pid 5263] <... memfd_create resumed>) = 3 [pid 5264] <... symlink resumed>) = 0 [pid 5263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5264] memfd_create("syzkaller", 0 [pid 5263] <... mmap resumed>) = 0x7f4da0c00000 [ 65.227917][ T5262] NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 4096) [ 65.250108][ C1] ================================================================== [ 65.258179][ C1] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x26f/0x2b0 [ 65.262760][ T5265] NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [pid 5057] <... ioctl resumed>) = 0 [pid 5264] <... memfd_create resumed>) = 3 [pid 5263] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 2097152 [pid 5262] <... mount resumed>) = 0 [pid 5262] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5262] chdir("./file1") = 0 [pid 5262] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5262] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME, 000 [pid 5264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4da0c00000 [ 65.266006][ C1] Read of size 4 at addr ffff88801c236324 by task udevd/4508 [ 65.283842][ C1] [ 65.286187][ C1] CPU: 1 PID: 4508 Comm: udevd Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 65.295395][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 65.305451][ C1] Call Trace: [ 65.308727][ C1] [ 65.311555][ C1] dump_stack_lvl+0xd9/0x1b0 [ 65.316144][ C1] print_report+0xc4/0x620 [ 65.320543][ C1] ? __virt_addr_valid+0x5e/0x580 [ 65.325553][ C1] ? __phys_addr+0xc6/0x140 [ 65.330042][ C1] kasan_report+0xda/0x110 [ 65.334439][ C1] ? do_raw_spin_lock+0x26f/0x2b0 [ 65.339444][ C1] ? do_raw_spin_lock+0x26f/0x2b0 [ 65.344454][ C1] do_raw_spin_lock+0x26f/0x2b0 [ 65.349289][ C1] ? __queue_work+0x675/0x11d0 [ 65.354040][ C1] ? spin_bug+0x1d0/0x1d0 [ 65.358348][ C1] ? rcu_is_watching+0x12/0xb0 [ 65.363100][ C1] _raw_spin_lock_irqsave+0x42/0x50 [ 65.368289][ C1] ? try_to_wake_up+0x9b/0x13d0 [ 65.373122][ C1] try_to_wake_up+0x9b/0x13d0 [ 65.377780][ C1] ? spin_bug+0x1d0/0x1d0 [ 65.382089][ C1] ? sched_ttwu_pending+0x560/0x560 [ 65.387266][ C1] ? rcu_is_watching+0x12/0xb0 [ 65.392014][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 65.398067][ C1] call_timer_fn+0x193/0x590 [ 65.402646][ C1] ? timer_fixup_assert_init+0x210/0x210 [ 65.408267][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 65.413626][ C1] ? spin_bug+0x1d0/0x1d0 [ 65.417934][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 65.423984][ C1] ? rcu_is_watching+0x12/0xb0 [ 65.428733][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 65.434784][ C1] __run_timers+0x759/0xaa0 [ 65.439279][ C1] ? call_timer_fn+0x590/0x590 [ 65.444028][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 65.449209][ C1] ? sched_clock_cpu+0x6d/0x4c0 [ 65.454044][ C1] run_timer_softirq+0x58/0xd0 [ 65.458796][ C1] __do_softirq+0x21a/0x8de [ 65.463284][ C1] ? __lock_text_end+0x3/0x3 [ 65.467854][ C1] irq_exit_rcu+0xb7/0x120 [ 65.472255][ C1] sysvec_apic_timer_interrupt+0x95/0xb0 [ 65.477875][ C1] [ 65.480784][ C1] [ 65.483694][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 65.489664][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 65.496072][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b [ 65.515661][ C1] RSP: 0018:ffffc90002ea7850 EFLAGS: 00000246 [ 65.521707][ C1] RAX: 0000000000000046 RBX: ffff88813fffad40 RCX: 1ffffffff1e758d3 [ 65.529661][ C1] RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe [ 65.537612][ C1] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 [ 65.545565][ C1] R10: ffffffff8f3a92d7 R11: dffffc0000000000 R12: ffff88813fffa740 [ 65.553515][ C1] R13: 000000000000003f R14: ffff88813fffad38 R15: ffff8880b9942bc0 [ 65.561469][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 65.567269][ C1] free_unref_page_commit+0x4e9/0xf30 [ 65.572630][ C1] free_unref_page+0x1d0/0x3c0 [ 65.577381][ C1] __put_partials+0x14c/0x160 [ 65.582044][ C1] qlist_free_all+0x58/0x150 [ 65.586618][ C1] kasan_quarantine_reduce+0x18e/0x1d0 [ 65.592060][ C1] __kasan_slab_alloc+0x65/0x90 [ 65.596891][ C1] kmem_cache_alloc+0x136/0x320 [ 65.601728][ C1] security_file_alloc+0x41/0x250 [ 65.606736][ C1] ? kmem_cache_alloc+0x17c/0x320 [ 65.611752][ C1] init_file+0x99/0x250 [ 65.615897][ C1] alloc_empty_file+0x91/0x1d0 [ 65.620650][ C1] path_openat+0xdc/0x2990 [ 65.625054][ C1] ? __x64_sys_openat+0x175/0x210 [ 65.630062][ C1] ? do_syscall_64+0xd3/0x250 [ 65.634718][ C1] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 65.640772][ C1] ? path_lookupat+0x770/0x770 [ 65.645520][ C1] ? rcu_is_watching+0x12/0xb0 [ 65.650267][ C1] do_filp_open+0x1de/0x430 [ 65.654748][ C1] ? may_open_dev+0xf0/0xf0 [ 65.659225][ C1] ? expand_files+0x442/0x910 [ 65.663887][ C1] ? _raw_spin_unlock+0x28/0x40 [ 65.668726][ C1] ? alloc_fd+0x2da/0x6c0 [ 65.673040][ C1] do_sys_openat2+0x176/0x1e0 [ 65.677699][ C1] ? build_open_flags+0x690/0x690 [ 65.682704][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 65.687716][ C1] __x64_sys_openat+0x175/0x210 [ 65.692550][ C1] ? __ia32_sys_open+0x1e0/0x1e0 [ 65.697468][ C1] ? rcu_is_watching+0x12/0xb0 [ 65.702214][ C1] do_syscall_64+0xd3/0x250 [ 65.706696][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 65.712571][ C1] RIP: 0033:0x7f70edd169a4 [ 65.716968][ C1] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 65.736556][ C1] RSP: 002b:00007ffc5ee00070 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 65.744945][ C1] RAX: ffffffffffffffda RBX: 00005572b2b5f040 RCX: 00007f70edd169a4 [ 65.752896][ C1] RDX: 0000000000080141 RSI: 00005572b2b420d8 RDI: 00000000ffffff9c [ 65.760846][ C1] RBP: 00005572b2b420d8 R08: 00000000ffffffff R09: 0000000000000000 [ 65.768796][ C1] R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 [ 65.776748][ C1] R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff [ 65.784701][ C1] [ 65.787700][ C1] [ 65.790004][ C1] Allocated by task 2: [ 65.794043][ C1] kasan_save_stack+0x33/0x50 [ 65.798699][ C1] kasan_save_track+0x14/0x30 [ 65.803351][ C1] __kasan_slab_alloc+0x81/0x90 [ 65.808180][ C1] kmem_cache_alloc_node+0x177/0x340 [ 65.813449][ C1] copy_process+0x44f/0x97b0 [ 65.818023][ C1] kernel_clone+0xfd/0x930 [ 65.822418][ C1] kernel_thread+0xc0/0x100 [ 65.826900][ C1] kthreadd+0x4fb/0x7d0 [ 65.831040][ C1] ret_from_fork+0x45/0x80 [ 65.835437][ C1] ret_from_fork_asm+0x11/0x20 [ 65.840184][ C1] [ 65.842486][ C1] Freed by task 22: [ 65.846266][ C1] kasan_save_stack+0x33/0x50 [ 65.850919][ C1] kasan_save_track+0x14/0x30 [ 65.855574][ C1] kasan_save_free_info+0x3f/0x60 [ 65.860581][ C1] __kasan_slab_free+0x121/0x1b0 [ 65.865495][ C1] kmem_cache_free+0x129/0x350 [ 65.870240][ C1] delayed_put_task_struct+0x21b/0x2c0 [ 65.875674][ C1] rcu_core+0x819/0x1680 [ 65.879901][ C1] __do_softirq+0x21a/0x8de [ 65.884381][ C1] [ 65.886681][ C1] Last potentially related work creation: [ 65.892368][ C1] kasan_save_stack+0x33/0x50 [ 65.897026][ C1] __kasan_record_aux_stack+0xba/0x100 [ 65.902462][ C1] __call_rcu_common.constprop.0+0x9a/0x7b0 [ 65.908340][ C1] put_task_struct_rcu_user+0x87/0xc0 [ 65.913694][ C1] __schedule+0xf1a/0x5c00 [ 65.918097][ C1] schedule+0xe9/0x270 [ 65.922139][ C1] nilfs_detach_log_writer+0x2f8/0xa90 [ 65.927578][ C1] nilfs_put_super+0x43/0x1b0 [ 65.932233][ C1] generic_shutdown_super+0x159/0x3d0 [ 65.937583][ C1] kill_block_super+0x3b/0x90 [ 65.942238][ C1] deactivate_locked_super+0xbc/0x1a0 [ 65.947591][ C1] deactivate_super+0xde/0x100 [ 65.952336][ C1] cleanup_mnt+0x222/0x450 [ 65.956729][ C1] task_work_run+0x14d/0x240 [ 65.961295][ C1] ptrace_notify+0x10d/0x130 [ 65.965862][ C1] syscall_exit_to_user_mode_prepare+0x126/0x230 [ 65.972166][ C1] syscall_exit_to_user_mode+0x11/0x2b0 [ 65.977693][ C1] do_syscall_64+0xe0/0x250 [ 65.982172][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 65.988049][ C1] [ 65.990349][ C1] The buggy address belongs to the object at ffff88801c235940 [ 65.990349][ C1] which belongs to the cache task_struct of size 7360 [ 66.004466][ C1] The buggy address is located 2532 bytes inside of [ 66.004466][ C1] freed 7360-byte region [ffff88801c235940, ffff88801c237600) [ 66.018415][ C1] [ 66.020721][ C1] The buggy address belongs to the physical page: [ 66.027103][ C1] page:ffffea0000708c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c230 [ 66.037227][ C1] head:ffffea0000708c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 66.046137][ C1] flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 66.054089][ C1] page_type: 0xffffffff() [ 66.058397][ C1] raw: 00fff00000000840 ffff8880146a1500 dead000000000100 dead000000000122 [ 66.066960][ C1] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 66.075519][ C1] page dumped because: kasan: bad access detected [ 66.081906][ C1] page_owner tracks the page as allocated [ 66.087595][ C1] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 59, tgid 59 (kworker/u4:4), ts 5212165817, free_ts 0 [ 66.107625][ C1] post_alloc_hook+0x2d0/0x350 [ 66.112377][ C1] get_page_from_freelist+0xa28/0x3780 [ 66.117820][ C1] __alloc_pages+0x22f/0x2440 [ 66.122480][ C1] new_slab+0xcc/0x3a0 [ 66.126885][ C1] ___slab_alloc+0x4af/0x19a0 [ 66.131547][ C1] __slab_alloc.constprop.0+0x56/0xa0 [ 66.136902][ C1] kmem_cache_alloc_node+0x10a/0x340 [ 66.142173][ C1] copy_process+0x44f/0x97b0 [ 66.146744][ C1] kernel_clone+0xfd/0x930 [ 66.151143][ C1] user_mode_thread+0xb4/0xf0 [ 66.155798][ C1] call_usermodehelper_exec_work+0xcb/0x170 [ 66.161674][ C1] process_one_work+0x886/0x15d0 [ 66.166592][ C1] worker_thread+0x8b9/0x1290 [ 66.171251][ C1] kthread+0x2c6/0x3a0 [ 66.175300][ C1] ret_from_fork+0x45/0x80 [ 66.179698][ C1] ret_from_fork_asm+0x11/0x20 [ 66.184441][ C1] page_owner free stack trace missing [ 66.189779][ C1] [ 66.192079][ C1] Memory state around the buggy address: [ 66.197681][ C1] ffff88801c236200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 66.205724][ C1] ffff88801c236280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 66.213763][ C1] >ffff88801c236300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 66.221799][ C1] ^ [ 66.226891][ C1] ffff88801c236380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 66.234932][ C1] ffff88801c236400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 66.242970][ C1] ================================================================== [ 66.251009][ C1] ================================================================== [ 66.259044][ C1] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x27f/0x2b0 [ 66.266829][ C1] Read of size 8 at addr ffff88801c236330 by task udevd/4508 [ 66.274176][ C1] [ 66.276477][ C1] CPU: 1 PID: 4508 Comm: udevd Tainted: G B 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 66.287120][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 66.297152][ C1] Call Trace: [ 66.300413][ C1] [ 66.303238][ C1] dump_stack_lvl+0xd9/0x1b0 [ 66.307816][ C1] print_report+0xc4/0x620 [ 66.312212][ C1] ? __virt_addr_valid+0x5e/0x580 [ 66.317221][ C1] ? __phys_addr+0xc6/0x140 [ 66.321706][ C1] kasan_report+0xda/0x110 [ 66.326101][ C1] ? do_raw_spin_lock+0x27f/0x2b0 [ 66.331105][ C1] ? do_raw_spin_lock+0x27f/0x2b0 [ 66.336110][ C1] do_raw_spin_lock+0x27f/0x2b0 [ 66.340940][ C1] ? __queue_work+0x675/0x11d0 [ 66.345692][ C1] ? spin_bug+0x1d0/0x1d0 [ 66.350002][ C1] ? rcu_is_watching+0x12/0xb0 [ 66.354748][ C1] _raw_spin_lock_irqsave+0x42/0x50 [ 66.359936][ C1] ? try_to_wake_up+0x9b/0x13d0 [ 66.364765][ C1] try_to_wake_up+0x9b/0x13d0 [ 66.369423][ C1] ? spin_bug+0x1d0/0x1d0 [ 66.373729][ C1] ? sched_ttwu_pending+0x560/0x560 [ 66.378903][ C1] ? rcu_is_watching+0x12/0xb0 [ 66.383648][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 66.389693][ C1] call_timer_fn+0x193/0x590 [ 66.394268][ C1] ? timer_fixup_assert_init+0x210/0x210 [ 66.399886][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 66.405243][ C1] ? spin_bug+0x1d0/0x1d0 [ 66.409551][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 66.415598][ C1] ? rcu_is_watching+0x12/0xb0 [ 66.420340][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 66.426389][ C1] __run_timers+0x759/0xaa0 [ 66.430882][ C1] ? call_timer_fn+0x590/0x590 [ 66.435634][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 66.440813][ C1] ? sched_clock_cpu+0x6d/0x4c0 [ 66.445649][ C1] run_timer_softirq+0x58/0xd0 [ 66.450399][ C1] __do_softirq+0x21a/0x8de [ 66.454883][ C1] ? __lock_text_end+0x3/0x3 [ 66.459453][ C1] irq_exit_rcu+0xb7/0x120 [ 66.463865][ C1] sysvec_apic_timer_interrupt+0x95/0xb0 [ 66.469483][ C1] [ 66.472395][ C1] [ 66.475308][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 66.481273][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 66.487674][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b [ 66.507290][ C1] RSP: 0018:ffffc90002ea7850 EFLAGS: 00000246 [ 66.513396][ C1] RAX: 0000000000000046 RBX: ffff88813fffad40 RCX: 1ffffffff1e758d3 [ 66.521348][ C1] RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe [ 66.529300][ C1] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 [ 66.537251][ C1] R10: ffffffff8f3a92d7 R11: dffffc0000000000 R12: ffff88813fffa740 [ 66.545202][ C1] R13: 000000000000003f R14: ffff88813fffad38 R15: ffff8880b9942bc0 [ 66.553158][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 66.558955][ C1] free_unref_page_commit+0x4e9/0xf30 [ 66.564320][ C1] free_unref_page+0x1d0/0x3c0 [ 66.569073][ C1] __put_partials+0x14c/0x160 [ 66.573737][ C1] qlist_free_all+0x58/0x150 [ 66.578311][ C1] kasan_quarantine_reduce+0x18e/0x1d0 [ 66.583756][ C1] __kasan_slab_alloc+0x65/0x90 [ 66.588587][ C1] kmem_cache_alloc+0x136/0x320 [ 66.593422][ C1] security_file_alloc+0x41/0x250 [ 66.598434][ C1] ? kmem_cache_alloc+0x17c/0x320 [ 66.603441][ C1] init_file+0x99/0x250 [ 66.607585][ C1] alloc_empty_file+0x91/0x1d0 [ 66.612338][ C1] path_openat+0xdc/0x2990 [ 66.616740][ C1] ? __x64_sys_openat+0x175/0x210 [ 66.621744][ C1] ? do_syscall_64+0xd3/0x250 [ 66.626399][ C1] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 66.632451][ C1] ? path_lookupat+0x770/0x770 [ 66.637203][ C1] ? rcu_is_watching+0x12/0xb0 [ 66.641950][ C1] do_filp_open+0x1de/0x430 [ 66.646433][ C1] ? may_open_dev+0xf0/0xf0 [ 66.650914][ C1] ? expand_files+0x442/0x910 [ 66.655577][ C1] ? _raw_spin_unlock+0x28/0x40 [ 66.660416][ C1] ? alloc_fd+0x2da/0x6c0 [ 66.664730][ C1] do_sys_openat2+0x176/0x1e0 [ 66.669389][ C1] ? build_open_flags+0x690/0x690 [ 66.674393][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 66.679406][ C1] __x64_sys_openat+0x175/0x210 [ 66.684244][ C1] ? __ia32_sys_open+0x1e0/0x1e0 [ 66.689162][ C1] ? rcu_is_watching+0x12/0xb0 [ 66.693908][ C1] do_syscall_64+0xd3/0x250 [ 66.698392][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 66.704273][ C1] RIP: 0033:0x7f70edd169a4 [ 66.708667][ C1] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 66.728255][ C1] RSP: 002b:00007ffc5ee00070 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 66.736644][ C1] RAX: ffffffffffffffda RBX: 00005572b2b5f040 RCX: 00007f70edd169a4 [ 66.744596][ C1] RDX: 0000000000080141 RSI: 00005572b2b420d8 RDI: 00000000ffffff9c [ 66.752548][ C1] RBP: 00005572b2b420d8 R08: 00000000ffffffff R09: 0000000000000000 [ 66.760498][ C1] R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 [ 66.768448][ C1] R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff [ 66.776405][ C1] [ 66.779405][ C1] [ 66.781706][ C1] Allocated by task 2: [ 66.785744][ C1] kasan_save_stack+0x33/0x50 [ 66.790401][ C1] kasan_save_track+0x14/0x30 [ 66.795053][ C1] __kasan_slab_alloc+0x81/0x90 [ 66.799878][ C1] kmem_cache_alloc_node+0x177/0x340 [ 66.805146][ C1] copy_process+0x44f/0x97b0 [ 66.809714][ C1] kernel_clone+0xfd/0x930 [ 66.814112][ C1] kernel_thread+0xc0/0x100 [ 66.818598][ C1] kthreadd+0x4fb/0x7d0 [ 66.822732][ C1] ret_from_fork+0x45/0x80 [ 66.827130][ C1] ret_from_fork_asm+0x11/0x20 [ 66.831878][ C1] [ 66.834180][ C1] Freed by task 22: [ 66.837962][ C1] kasan_save_stack+0x33/0x50 [ 66.842622][ C1] kasan_save_track+0x14/0x30 [ 66.847277][ C1] kasan_save_free_info+0x3f/0x60 [ 66.852279][ C1] __kasan_slab_free+0x121/0x1b0 [ 66.857192][ C1] kmem_cache_free+0x129/0x350 [ 66.861941][ C1] delayed_put_task_struct+0x21b/0x2c0 [ 66.867378][ C1] rcu_core+0x819/0x1680 [ 66.871607][ C1] __do_softirq+0x21a/0x8de [ 66.876085][ C1] [ 66.878384][ C1] Last potentially related work creation: [ 66.884079][ C1] kasan_save_stack+0x33/0x50 [ 66.888741][ C1] __kasan_record_aux_stack+0xba/0x100 [ 66.894183][ C1] __call_rcu_common.constprop.0+0x9a/0x7b0 [ 66.900061][ C1] put_task_struct_rcu_user+0x87/0xc0 [ 66.905412][ C1] __schedule+0xf1a/0x5c00 [ 66.909807][ C1] schedule+0xe9/0x270 [ 66.913854][ C1] nilfs_detach_log_writer+0x2f8/0xa90 [ 66.919293][ C1] nilfs_put_super+0x43/0x1b0 [ 66.923948][ C1] generic_shutdown_super+0x159/0x3d0 [ 66.929305][ C1] kill_block_super+0x3b/0x90 [ 66.933962][ C1] deactivate_locked_super+0xbc/0x1a0 [ 66.939320][ C1] deactivate_super+0xde/0x100 [ 66.944067][ C1] cleanup_mnt+0x222/0x450 [ 66.948460][ C1] task_work_run+0x14d/0x240 [ 66.953025][ C1] ptrace_notify+0x10d/0x130 [ 66.957589][ C1] syscall_exit_to_user_mode_prepare+0x126/0x230 [ 66.963898][ C1] syscall_exit_to_user_mode+0x11/0x2b0 [ 66.969425][ C1] do_syscall_64+0xe0/0x250 [ 66.973907][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 66.979786][ C1] [ 66.982090][ C1] The buggy address belongs to the object at ffff88801c235940 [ 66.982090][ C1] which belongs to the cache task_struct of size 7360 [ 66.996204][ C1] The buggy address is located 2544 bytes inside of [ 66.996204][ C1] freed 7360-byte region [ffff88801c235940, ffff88801c237600) [ 67.010150][ C1] [ 67.012452][ C1] The buggy address belongs to the physical page: [ 67.018837][ C1] page:ffffea0000708c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c230 [ 67.028963][ C1] head:ffffea0000708c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 67.037873][ C1] flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 67.045827][ C1] page_type: 0xffffffff() [ 67.050135][ C1] raw: 00fff00000000840 ffff8880146a1500 dead000000000100 dead000000000122 [ 67.058694][ C1] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 67.067249][ C1] page dumped because: kasan: bad access detected [ 67.073634][ C1] page_owner tracks the page as allocated [ 67.079323][ C1] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 59, tgid 59 (kworker/u4:4), ts 5212165817, free_ts 0 [ 67.099353][ C1] post_alloc_hook+0x2d0/0x350 [ 67.104101][ C1] get_page_from_freelist+0xa28/0x3780 [ 67.109544][ C1] __alloc_pages+0x22f/0x2440 [ 67.114196][ C1] new_slab+0xcc/0x3a0 [ 67.118247][ C1] ___slab_alloc+0x4af/0x19a0 [ 67.122930][ C1] __slab_alloc.constprop.0+0x56/0xa0 [ 67.128284][ C1] kmem_cache_alloc_node+0x10a/0x340 [ 67.133551][ C1] copy_process+0x44f/0x97b0 [ 67.138122][ C1] kernel_clone+0xfd/0x930 [ 67.142517][ C1] user_mode_thread+0xb4/0xf0 [ 67.147174][ C1] call_usermodehelper_exec_work+0xcb/0x170 [ 67.153053][ C1] process_one_work+0x886/0x15d0 [ 67.157978][ C1] worker_thread+0x8b9/0x1290 [ 67.162640][ C1] kthread+0x2c6/0x3a0 [ 67.166689][ C1] ret_from_fork+0x45/0x80 [ 67.171086][ C1] ret_from_fork_asm+0x11/0x20 [ 67.175834][ C1] page_owner free stack trace missing [ 67.181177][ C1] [ 67.183480][ C1] Memory state around the buggy address: [ 67.189086][ C1] ffff88801c236200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 67.197123][ C1] ffff88801c236280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 67.205159][ C1] >ffff88801c236300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 67.213197][ C1] ^ [ 67.218801][ C1] ffff88801c236380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 67.226836][ C1] ffff88801c236400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 67.234874][ C1] ================================================================== [ 67.242909][ C1] ================================================================== [ 67.250946][ C1] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x265/0x2b0 [ 67.258728][ C1] Read of size 4 at addr ffff88801c236328 by task udevd/4508 [ 67.266072][ C1] [ 67.268375][ C1] CPU: 1 PID: 4508 Comm: udevd Tainted: G B 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 67.279023][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 67.289056][ C1] Call Trace: [ 67.292315][ C1] [ 67.295140][ C1] dump_stack_lvl+0xd9/0x1b0 [ 67.299719][ C1] print_report+0xc4/0x620 [ 67.304114][ C1] ? __virt_addr_valid+0x5e/0x580 [ 67.309129][ C1] ? __phys_addr+0xc6/0x140 [ 67.313623][ C1] kasan_report+0xda/0x110 [ 67.318025][ C1] ? do_raw_spin_lock+0x265/0x2b0 [ 67.323032][ C1] ? do_raw_spin_lock+0x265/0x2b0 [ 67.328039][ C1] do_raw_spin_lock+0x265/0x2b0 [ 67.332871][ C1] ? __queue_work+0x675/0x11d0 [ 67.337621][ C1] ? spin_bug+0x1d0/0x1d0 [ 67.341934][ C1] ? rcu_is_watching+0x12/0xb0 [ 67.346684][ C1] _raw_spin_lock_irqsave+0x42/0x50 [ 67.351872][ C1] ? try_to_wake_up+0x9b/0x13d0 [ 67.356702][ C1] try_to_wake_up+0x9b/0x13d0 [ 67.361359][ C1] ? spin_bug+0x1d0/0x1d0 [ 67.365667][ C1] ? sched_ttwu_pending+0x560/0x560 [ 67.370846][ C1] ? rcu_is_watching+0x12/0xb0 [ 67.375595][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 67.381644][ C1] call_timer_fn+0x193/0x590 [ 67.386223][ C1] ? timer_fixup_assert_init+0x210/0x210 [ 67.391839][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 67.397196][ C1] ? spin_bug+0x1d0/0x1d0 [ 67.401504][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 67.407552][ C1] ? rcu_is_watching+0x12/0xb0 [ 67.412297][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 67.418344][ C1] __run_timers+0x759/0xaa0 [ 67.422840][ C1] ? call_timer_fn+0x590/0x590 [ 67.427589][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 67.432780][ C1] ? sched_clock_cpu+0x6d/0x4c0 [ 67.437632][ C1] run_timer_softirq+0x58/0xd0 [ 67.442383][ C1] __do_softirq+0x21a/0x8de [ 67.446868][ C1] ? __lock_text_end+0x3/0x3 [ 67.451439][ C1] irq_exit_rcu+0xb7/0x120 [ 67.455836][ C1] sysvec_apic_timer_interrupt+0x95/0xb0 [ 67.461459][ C1] [ 67.464374][ C1] [ 67.467286][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 67.473253][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 67.479656][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b [ 67.499241][ C1] RSP: 0018:ffffc90002ea7850 EFLAGS: 00000246 [ 67.505287][ C1] RAX: 0000000000000046 RBX: ffff88813fffad40 RCX: 1ffffffff1e758d3 [ 67.513237][ C1] RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe [ 67.521190][ C1] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 [ 67.529138][ C1] R10: ffffffff8f3a92d7 R11: dffffc0000000000 R12: ffff88813fffa740 [ 67.537088][ C1] R13: 000000000000003f R14: ffff88813fffad38 R15: ffff8880b9942bc0 [ 67.545043][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 67.550837][ C1] free_unref_page_commit+0x4e9/0xf30 [ 67.556198][ C1] free_unref_page+0x1d0/0x3c0 [ 67.560949][ C1] __put_partials+0x14c/0x160 [ 67.565617][ C1] qlist_free_all+0x58/0x150 [ 67.570195][ C1] kasan_quarantine_reduce+0x18e/0x1d0 [ 67.575639][ C1] __kasan_slab_alloc+0x65/0x90 [ 67.580470][ C1] kmem_cache_alloc+0x136/0x320 [ 67.585311][ C1] security_file_alloc+0x41/0x250 [ 67.590322][ C1] ? kmem_cache_alloc+0x17c/0x320 [ 67.595332][ C1] init_file+0x99/0x250 [ 67.599478][ C1] alloc_empty_file+0x91/0x1d0 [ 67.604236][ C1] path_openat+0xdc/0x2990 [ 67.608645][ C1] ? __x64_sys_openat+0x175/0x210 [ 67.613651][ C1] ? do_syscall_64+0xd3/0x250 [ 67.618310][ C1] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 67.624364][ C1] ? path_lookupat+0x770/0x770 [ 67.629116][ C1] ? rcu_is_watching+0x12/0xb0 [ 67.633866][ C1] do_filp_open+0x1de/0x430 [ 67.638351][ C1] ? may_open_dev+0xf0/0xf0 [ 67.642835][ C1] ? expand_files+0x442/0x910 [ 67.647501][ C1] ? _raw_spin_unlock+0x28/0x40 [ 67.652339][ C1] ? alloc_fd+0x2da/0x6c0 [ 67.656651][ C1] do_sys_openat2+0x176/0x1e0 [ 67.661309][ C1] ? build_open_flags+0x690/0x690 [ 67.666317][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 67.671332][ C1] __x64_sys_openat+0x175/0x210 [ 67.676164][ C1] ? __ia32_sys_open+0x1e0/0x1e0 [ 67.681085][ C1] ? rcu_is_watching+0x12/0xb0 [ 67.685830][ C1] do_syscall_64+0xd3/0x250 [ 67.690315][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 67.696192][ C1] RIP: 0033:0x7f70edd169a4 [ 67.700585][ C1] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 67.720172][ C1] RSP: 002b:00007ffc5ee00070 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 67.728560][ C1] RAX: ffffffffffffffda RBX: 00005572b2b5f040 RCX: 00007f70edd169a4 [ 67.736512][ C1] RDX: 0000000000080141 RSI: 00005572b2b420d8 RDI: 00000000ffffff9c [ 67.744464][ C1] RBP: 00005572b2b420d8 R08: 00000000ffffffff R09: 0000000000000000 [ 67.752413][ C1] R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 [ 67.760364][ C1] R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff [ 67.768318][ C1] [ 67.771318][ C1] [ 67.773621][ C1] Allocated by task 2: [ 67.777660][ C1] kasan_save_stack+0x33/0x50 [ 67.782314][ C1] kasan_save_track+0x14/0x30 [ 67.786966][ C1] __kasan_slab_alloc+0x81/0x90 [ 67.791795][ C1] kmem_cache_alloc_node+0x177/0x340 [ 67.797062][ C1] copy_process+0x44f/0x97b0 [ 67.801631][ C1] kernel_clone+0xfd/0x930 [ 67.806028][ C1] kernel_thread+0xc0/0x100 [ 67.810517][ C1] kthreadd+0x4fb/0x7d0 [ 67.814654][ C1] ret_from_fork+0x45/0x80 [ 67.819054][ C1] ret_from_fork_asm+0x11/0x20 [ 67.823798][ C1] [ 67.826104][ C1] Freed by task 22: [ 67.829882][ C1] kasan_save_stack+0x33/0x50 [ 67.834537][ C1] kasan_save_track+0x14/0x30 [ 67.839192][ C1] kasan_save_free_info+0x3f/0x60 [ 67.844195][ C1] __kasan_slab_free+0x121/0x1b0 [ 67.849112][ C1] kmem_cache_free+0x129/0x350 [ 67.853863][ C1] delayed_put_task_struct+0x21b/0x2c0 [ 67.859301][ C1] rcu_core+0x819/0x1680 [ 67.863527][ C1] __do_softirq+0x21a/0x8de [ 67.868009][ C1] [ 67.870312][ C1] Last potentially related work creation: [ 67.876001][ C1] kasan_save_stack+0x33/0x50 [ 67.880657][ C1] __kasan_record_aux_stack+0xba/0x100 [ 67.886098][ C1] __call_rcu_common.constprop.0+0x9a/0x7b0 [ 67.891975][ C1] put_task_struct_rcu_user+0x87/0xc0 [ 67.897327][ C1] __schedule+0xf1a/0x5c00 [ 67.901726][ C1] schedule+0xe9/0x270 [ 67.905779][ C1] nilfs_detach_log_writer+0x2f8/0xa90 [ 67.911227][ C1] nilfs_put_super+0x43/0x1b0 [ 67.915887][ C1] generic_shutdown_super+0x159/0x3d0 [ 67.921240][ C1] kill_block_super+0x3b/0x90 [ 67.925899][ C1] deactivate_locked_super+0xbc/0x1a0 [ 67.931254][ C1] deactivate_super+0xde/0x100 [ 67.936001][ C1] cleanup_mnt+0x222/0x450 [ 67.940398][ C1] task_work_run+0x14d/0x240 [ 67.944966][ C1] ptrace_notify+0x10d/0x130 [ 67.949534][ C1] syscall_exit_to_user_mode_prepare+0x126/0x230 [ 67.955843][ C1] syscall_exit_to_user_mode+0x11/0x2b0 [ 67.961368][ C1] do_syscall_64+0xe0/0x250 [ 67.965849][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 67.971726][ C1] [ 67.974029][ C1] The buggy address belongs to the object at ffff88801c235940 [ 67.974029][ C1] which belongs to the cache task_struct of size 7360 [ 67.988146][ C1] The buggy address is located 2536 bytes inside of [ 67.988146][ C1] freed 7360-byte region [ffff88801c235940, ffff88801c237600) [ 68.002092][ C1] [ 68.004396][ C1] The buggy address belongs to the physical page: [ 68.010781][ C1] page:ffffea0000708c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c230 [ 68.020906][ C1] head:ffffea0000708c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 68.029811][ C1] flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 68.037767][ C1] page_type: 0xffffffff() [ 68.042076][ C1] raw: 00fff00000000840 ffff8880146a1500 dead000000000100 dead000000000122 [ 68.050640][ C1] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 68.059198][ C1] page dumped because: kasan: bad access detected [ 68.065583][ C1] page_owner tracks the page as allocated [ 68.071270][ C1] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 59, tgid 59 (kworker/u4:4), ts 5212165817, free_ts 0 [ 68.091301][ C1] post_alloc_hook+0x2d0/0x350 [ 68.096049][ C1] get_page_from_freelist+0xa28/0x3780 [ 68.101492][ C1] __alloc_pages+0x22f/0x2440 [ 68.106146][ C1] new_slab+0xcc/0x3a0 [ 68.110203][ C1] ___slab_alloc+0x4af/0x19a0 [ 68.114865][ C1] __slab_alloc.constprop.0+0x56/0xa0 [ 68.120221][ C1] kmem_cache_alloc_node+0x10a/0x340 [ 68.125490][ C1] copy_process+0x44f/0x97b0 [ 68.130063][ C1] kernel_clone+0xfd/0x930 [ 68.134459][ C1] user_mode_thread+0xb4/0xf0 [ 68.139119][ C1] call_usermodehelper_exec_work+0xcb/0x170 [ 68.145011][ C1] process_one_work+0x886/0x15d0 [ 68.149934][ C1] worker_thread+0x8b9/0x1290 [ 68.154594][ C1] kthread+0x2c6/0x3a0 [ 68.158643][ C1] ret_from_fork+0x45/0x80 [ 68.163041][ C1] ret_from_fork_asm+0x11/0x20 [ 68.167787][ C1] page_owner free stack trace missing [ 68.173136][ C1] [ 68.175443][ C1] Memory state around the buggy address: [ 68.181048][ C1] ffff88801c236200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 68.189086][ C1] ffff88801c236280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 68.197122][ C1] >ffff88801c236300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 68.205159][ C1] ^ [ 68.210506][ C1] ffff88801c236380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 68.218544][ C1] ffff88801c236400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 68.226578][ C1] ================================================================== [ 68.234617][ C1] ================================================================== [ 68.242651][ C1] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x11f/0x2b0 [ 68.250435][ C1] Write of size 4 at addr ffff88801c236320 by task udevd/4508 [ 68.257866][ C1] [ 68.260172][ C1] CPU: 1 PID: 4508 Comm: udevd Tainted: G B 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 68.270821][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 68.280853][ C1] Call Trace: [ 68.284117][ C1] [ 68.286945][ C1] dump_stack_lvl+0xd9/0x1b0 [ 68.291528][ C1] print_report+0xc4/0x620 [ 68.295928][ C1] ? __virt_addr_valid+0x5e/0x580 [ 68.300936][ C1] ? __phys_addr+0xc6/0x140 [ 68.305422][ C1] kasan_report+0xda/0x110 [ 68.309817][ C1] ? do_raw_spin_lock+0x11f/0x2b0 [ 68.314821][ C1] ? do_raw_spin_lock+0x11f/0x2b0 [ 68.319828][ C1] kasan_check_range+0xef/0x190 [ 68.324662][ C1] do_raw_spin_lock+0x11f/0x2b0 [ 68.329492][ C1] ? __queue_work+0x675/0x11d0 [ 68.334238][ C1] ? spin_bug+0x1d0/0x1d0 [ 68.338546][ C1] ? rcu_is_watching+0x12/0xb0 [ 68.343295][ C1] _raw_spin_lock_irqsave+0x42/0x50 [ 68.348481][ C1] ? try_to_wake_up+0x9b/0x13d0 [ 68.353313][ C1] try_to_wake_up+0x9b/0x13d0 [ 68.357973][ C1] ? spin_bug+0x1d0/0x1d0 [ 68.362287][ C1] ? sched_ttwu_pending+0x560/0x560 [ 68.367467][ C1] ? rcu_is_watching+0x12/0xb0 [ 68.372215][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 68.378262][ C1] call_timer_fn+0x193/0x590 [ 68.382837][ C1] ? timer_fixup_assert_init+0x210/0x210 [ 68.388457][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 68.393815][ C1] ? spin_bug+0x1d0/0x1d0 [ 68.398121][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 68.404169][ C1] ? rcu_is_watching+0x12/0xb0 [ 68.408918][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 68.414966][ C1] __run_timers+0x759/0xaa0 [ 68.419462][ C1] ? call_timer_fn+0x590/0x590 [ 68.424213][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 68.429393][ C1] ? sched_clock_cpu+0x6d/0x4c0 [ 68.434225][ C1] run_timer_softirq+0x58/0xd0 [ 68.438981][ C1] __do_softirq+0x21a/0x8de [ 68.443464][ C1] ? __lock_text_end+0x3/0x3 [ 68.448038][ C1] irq_exit_rcu+0xb7/0x120 [ 68.452438][ C1] sysvec_apic_timer_interrupt+0x95/0xb0 [ 68.458056][ C1] [ 68.460972][ C1] [ 68.463888][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 68.469858][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 68.476260][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b [ 68.495851][ C1] RSP: 0018:ffffc90002ea7850 EFLAGS: 00000246 [ 68.501902][ C1] RAX: 0000000000000046 RBX: ffff88813fffad40 RCX: 1ffffffff1e758d3 [ 68.509856][ C1] RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe [ 68.517805][ C1] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 [ 68.525750][ C1] R10: ffffffff8f3a92d7 R11: dffffc0000000000 R12: ffff88813fffa740 [ 68.533700][ C1] R13: 000000000000003f R14: ffff88813fffad38 R15: ffff8880b9942bc0 [ 68.541652][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 68.547451][ C1] free_unref_page_commit+0x4e9/0xf30 [ 68.552812][ C1] free_unref_page+0x1d0/0x3c0 [ 68.557657][ C1] __put_partials+0x14c/0x160 [ 68.562329][ C1] qlist_free_all+0x58/0x150 [ 68.566912][ C1] kasan_quarantine_reduce+0x18e/0x1d0 [ 68.572353][ C1] __kasan_slab_alloc+0x65/0x90 [ 68.577182][ C1] kmem_cache_alloc+0x136/0x320 [ 68.582020][ C1] security_file_alloc+0x41/0x250 [ 68.587030][ C1] ? kmem_cache_alloc+0x17c/0x320 [ 68.592042][ C1] init_file+0x99/0x250 [ 68.596181][ C1] alloc_empty_file+0x91/0x1d0 [ 68.600929][ C1] path_openat+0xdc/0x2990 [ 68.605330][ C1] ? __x64_sys_openat+0x175/0x210 [ 68.610334][ C1] ? do_syscall_64+0xd3/0x250 [ 68.614998][ C1] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 68.621057][ C1] ? path_lookupat+0x770/0x770 [ 68.625806][ C1] ? rcu_is_watching+0x12/0xb0 [ 68.630555][ C1] do_filp_open+0x1de/0x430 [ 68.635040][ C1] ? may_open_dev+0xf0/0xf0 [ 68.639520][ C1] ? expand_files+0x442/0x910 [ 68.644182][ C1] ? _raw_spin_unlock+0x28/0x40 [ 68.649018][ C1] ? alloc_fd+0x2da/0x6c0 [ 68.653332][ C1] do_sys_openat2+0x176/0x1e0 [ 68.657994][ C1] ? build_open_flags+0x690/0x690 [ 68.663001][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 68.668015][ C1] __x64_sys_openat+0x175/0x210 [ 68.672846][ C1] ? __ia32_sys_open+0x1e0/0x1e0 [ 68.677764][ C1] ? rcu_is_watching+0x12/0xb0 [ 68.682511][ C1] do_syscall_64+0xd3/0x250 [ 68.686997][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 68.692879][ C1] RIP: 0033:0x7f70edd169a4 [ 68.697270][ C1] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 68.716860][ C1] RSP: 002b:00007ffc5ee00070 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 68.725251][ C1] RAX: ffffffffffffffda RBX: 00005572b2b5f040 RCX: 00007f70edd169a4 [ 68.733201][ C1] RDX: 0000000000080141 RSI: 00005572b2b420d8 RDI: 00000000ffffff9c [ 68.741151][ C1] RBP: 00005572b2b420d8 R08: 00000000ffffffff R09: 0000000000000000 [ 68.749100][ C1] R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 [ 68.757052][ C1] R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff [ 68.765008][ C1] [ 68.768006][ C1] [ 68.770306][ C1] Allocated by task 2: [ 68.774347][ C1] kasan_save_stack+0x33/0x50 [ 68.779003][ C1] kasan_save_track+0x14/0x30 [ 68.783657][ C1] __kasan_slab_alloc+0x81/0x90 [ 68.788485][ C1] kmem_cache_alloc_node+0x177/0x340 [ 68.793752][ C1] copy_process+0x44f/0x97b0 [ 68.798323][ C1] kernel_clone+0xfd/0x930 [ 68.802719][ C1] kernel_thread+0xc0/0x100 [ 68.807204][ C1] kthreadd+0x4fb/0x7d0 [ 68.811340][ C1] ret_from_fork+0x45/0x80 [ 68.815738][ C1] ret_from_fork_asm+0x11/0x20 [ 68.820484][ C1] [ 68.822786][ C1] Freed by task 22: [ 68.826566][ C1] kasan_save_stack+0x33/0x50 [ 68.831223][ C1] kasan_save_track+0x14/0x30 [ 68.835878][ C1] kasan_save_free_info+0x3f/0x60 [ 68.840880][ C1] __kasan_slab_free+0x121/0x1b0 [ 68.845794][ C1] kmem_cache_free+0x129/0x350 [ 68.850542][ C1] delayed_put_task_struct+0x21b/0x2c0 [ 68.855985][ C1] rcu_core+0x819/0x1680 [ 68.860209][ C1] __do_softirq+0x21a/0x8de [ 68.864692][ C1] [ 68.866996][ C1] Last potentially related work creation: [ 68.872685][ C1] kasan_save_stack+0x33/0x50 [ 68.877341][ C1] __kasan_record_aux_stack+0xba/0x100 [ 68.882779][ C1] __call_rcu_common.constprop.0+0x9a/0x7b0 [ 68.888658][ C1] put_task_struct_rcu_user+0x87/0xc0 [ 68.894009][ C1] __schedule+0xf1a/0x5c00 [ 68.898405][ C1] schedule+0xe9/0x270 [ 68.902452][ C1] nilfs_detach_log_writer+0x2f8/0xa90 [ 68.907893][ C1] nilfs_put_super+0x43/0x1b0 [ 68.912551][ C1] generic_shutdown_super+0x159/0x3d0 [ 68.917907][ C1] kill_block_super+0x3b/0x90 [ 68.922564][ C1] deactivate_locked_super+0xbc/0x1a0 [ 68.927917][ C1] deactivate_super+0xde/0x100 [ 68.932663][ C1] cleanup_mnt+0x222/0x450 [ 68.937070][ C1] task_work_run+0x14d/0x240 [ 68.941640][ C1] ptrace_notify+0x10d/0x130 [ 68.946207][ C1] syscall_exit_to_user_mode_prepare+0x126/0x230 [ 68.952519][ C1] syscall_exit_to_user_mode+0x11/0x2b0 [ 68.958045][ C1] do_syscall_64+0xe0/0x250 [ 68.962527][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 68.968404][ C1] [ 68.970707][ C1] The buggy address belongs to the object at ffff88801c235940 [ 68.970707][ C1] which belongs to the cache task_struct of size 7360 [ 68.984820][ C1] The buggy address is located 2528 bytes inside of [ 68.984820][ C1] freed 7360-byte region [ffff88801c235940, ffff88801c237600) [ 68.998766][ C1] [ 69.001070][ C1] The buggy address belongs to the physical page: [ 69.007456][ C1] page:ffffea0000708c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c230 [ 69.017580][ C1] head:ffffea0000708c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 69.026489][ C1] flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 69.034445][ C1] page_type: 0xffffffff() [ 69.038751][ C1] raw: 00fff00000000840 ffff8880146a1500 dead000000000100 dead000000000122 [ 69.047315][ C1] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 69.055875][ C1] page dumped because: kasan: bad access detected [ 69.062259][ C1] page_owner tracks the page as allocated [ 69.067952][ C1] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 59, tgid 59 (kworker/u4:4), ts 5212165817, free_ts 0 [ 69.087993][ C1] post_alloc_hook+0x2d0/0x350 [ 69.092744][ C1] get_page_from_freelist+0xa28/0x3780 [ 69.098185][ C1] __alloc_pages+0x22f/0x2440 [ 69.102837][ C1] new_slab+0xcc/0x3a0 [ 69.106890][ C1] ___slab_alloc+0x4af/0x19a0 [ 69.111552][ C1] __slab_alloc.constprop.0+0x56/0xa0 [ 69.116909][ C1] kmem_cache_alloc_node+0x10a/0x340 [ 69.122175][ C1] copy_process+0x44f/0x97b0 [ 69.126748][ C1] kernel_clone+0xfd/0x930 [ 69.131145][ C1] user_mode_thread+0xb4/0xf0 [ 69.135810][ C1] call_usermodehelper_exec_work+0xcb/0x170 [ 69.141691][ C1] process_one_work+0x886/0x15d0 [ 69.146616][ C1] worker_thread+0x8b9/0x1290 [ 69.151274][ C1] kthread+0x2c6/0x3a0 [ 69.155325][ C1] ret_from_fork+0x45/0x80 [ 69.159723][ C1] ret_from_fork_asm+0x11/0x20 [ 69.164470][ C1] page_owner free stack trace missing [ 69.169814][ C1] [ 69.172115][ C1] Memory state around the buggy address: [ 69.177720][ C1] ffff88801c236200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.185759][ C1] ffff88801c236280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.193797][ C1] >ffff88801c236300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.201834][ C1] ^ [ 69.206919][ C1] ffff88801c236380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.214965][ C1] ffff88801c236400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.223010][ C1] ================================================================== [ 69.231044][ C1] Kernel panic - not syncing: kasan.fault=panic_on_write set ... [ 69.238734][ C1] CPU: 1 PID: 4508 Comm: udevd Tainted: G B 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 69.249383][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 69.259418][ C1] Call Trace: [ 69.262853][ C1] [ 69.265676][ C1] dump_stack_lvl+0xd9/0x1b0 [ 69.270254][ C1] panic+0x6dc/0x790 [ 69.274132][ C1] ? panic_smp_self_stop+0xa0/0xa0 [ 69.279224][ C1] ? lock_release+0x4bf/0x690 [ 69.283894][ C1] end_report+0x12f/0x150 [ 69.288204][ C1] kasan_report+0xea/0x110 [ 69.292601][ C1] ? do_raw_spin_lock+0x11f/0x2b0 [ 69.297604][ C1] ? do_raw_spin_lock+0x11f/0x2b0 [ 69.302610][ C1] kasan_check_range+0xef/0x190 [ 69.307443][ C1] do_raw_spin_lock+0x11f/0x2b0 [ 69.312274][ C1] ? __queue_work+0x675/0x11d0 [ 69.317022][ C1] ? spin_bug+0x1d0/0x1d0 [ 69.321330][ C1] ? rcu_is_watching+0x12/0xb0 [ 69.326077][ C1] _raw_spin_lock_irqsave+0x42/0x50 [ 69.331264][ C1] ? try_to_wake_up+0x9b/0x13d0 [ 69.336097][ C1] try_to_wake_up+0x9b/0x13d0 [ 69.340756][ C1] ? spin_bug+0x1d0/0x1d0 [ 69.345065][ C1] ? sched_ttwu_pending+0x560/0x560 [ 69.350243][ C1] ? rcu_is_watching+0x12/0xb0 [ 69.354993][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 69.361045][ C1] call_timer_fn+0x193/0x590 [ 69.365622][ C1] ? timer_fixup_assert_init+0x210/0x210 [ 69.371240][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 69.376600][ C1] ? spin_bug+0x1d0/0x1d0 [ 69.380909][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 69.386960][ C1] ? rcu_is_watching+0x12/0xb0 [ 69.391709][ C1] ? nilfs_segctor_zeropad_segsum+0x170/0x170 [ 69.397759][ C1] __run_timers+0x759/0xaa0 [ 69.402252][ C1] ? call_timer_fn+0x590/0x590 [ 69.407000][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 69.412179][ C1] ? sched_clock_cpu+0x6d/0x4c0 [ 69.417012][ C1] run_timer_softirq+0x58/0xd0 [ 69.421761][ C1] __do_softirq+0x21a/0x8de [ 69.426244][ C1] ? __lock_text_end+0x3/0x3 [ 69.430816][ C1] irq_exit_rcu+0xb7/0x120 [ 69.435212][ C1] sysvec_apic_timer_interrupt+0x95/0xb0 [ 69.440828][ C1] [ 69.443740][ C1] [ 69.446649][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 69.452619][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 69.459022][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c6 ba d9 f6 48 89 df e8 be 32 da f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 c5 d2 cb f6 65 8b 05 96 17 75 75 85 c0 74 12 5b [ 69.478607][ C1] RSP: 0018:ffffc90002ea7850 EFLAGS: 00000246 [ 69.484651][ C1] RAX: 0000000000000046 RBX: ffff88813fffad40 RCX: 1ffffffff1e758d3 [ 69.492602][ C1] RDX: 0000000000000000 RSI: ffffffff8b2f8d40 RDI: ffffffff8a8eaafe [ 69.500553][ C1] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 [ 69.508502][ C1] R10: ffffffff8f3a92d7 R11: dffffc0000000000 R12: ffff88813fffa740 [ 69.516457][ C1] R13: 000000000000003f R14: ffff88813fffad38 R15: ffff8880b9942bc0 [ 69.524416][ C1] ? _raw_spin_unlock_irqrestore+0x4e/0x70 [ 69.530215][ C1] free_unref_page_commit+0x4e9/0xf30 [ 69.535573][ C1] free_unref_page+0x1d0/0x3c0 [ 69.540324][ C1] __put_partials+0x14c/0x160 [ 69.544993][ C1] qlist_free_all+0x58/0x150 [ 69.549564][ C1] kasan_quarantine_reduce+0x18e/0x1d0 [ 69.555005][ C1] __kasan_slab_alloc+0x65/0x90 [ 69.559834][ C1] kmem_cache_alloc+0x136/0x320 [ 69.564671][ C1] security_file_alloc+0x41/0x250 [ 69.569678][ C1] ? kmem_cache_alloc+0x17c/0x320 [ 69.574688][ C1] init_file+0x99/0x250 [ 69.578829][ C1] alloc_empty_file+0x91/0x1d0 [ 69.583577][ C1] path_openat+0xdc/0x2990 [ 69.587978][ C1] ? __x64_sys_openat+0x175/0x210 [ 69.592991][ C1] ? do_syscall_64+0xd3/0x250 [ 69.597645][ C1] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 69.603701][ C1] ? path_lookupat+0x770/0x770 [ 69.608451][ C1] ? rcu_is_watching+0x12/0xb0 [ 69.613198][ C1] do_filp_open+0x1de/0x430 [ 69.617681][ C1] ? may_open_dev+0xf0/0xf0 [ 69.622163][ C1] ? expand_files+0x442/0x910 [ 69.626826][ C1] ? _raw_spin_unlock+0x28/0x40 [ 69.631661][ C1] ? alloc_fd+0x2da/0x6c0 [ 69.635973][ C1] do_sys_openat2+0x176/0x1e0 [ 69.640634][ C1] ? build_open_flags+0x690/0x690 [ 69.645638][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 69.650649][ C1] __x64_sys_openat+0x175/0x210 [ 69.655480][ C1] ? __ia32_sys_open+0x1e0/0x1e0 [ 69.660401][ C1] ? rcu_is_watching+0x12/0xb0 [ 69.665148][ C1] do_syscall_64+0xd3/0x250 [ 69.669632][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 69.675511][ C1] RIP: 0033:0x7f70edd169a4 [ 69.679904][ C1] Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 [ 69.699490][ C1] RSP: 002b:00007ffc5ee00070 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 69.707887][ C1] RAX: ffffffffffffffda RBX: 00005572b2b5f040 RCX: 00007f70edd169a4 [ 69.715837][ C1] RDX: 0000000000080141 RSI: 00005572b2b420d8 RDI: 00000000ffffff9c [ 69.723787][ C1] RBP: 00005572b2b420d8 R08: 00000000ffffffff R09: 0000000000000000 [ 69.731737][ C1] R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 [ 69.739686][ C1] R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff [ 69.747642][ C1] [ 69.750869][ C1] Kernel Offset: disabled [ 69.755165][ C1] Rebooting in 86400 seconds..